ORCID Profile
0000-0001-6586-7981
Current Organisation
University of Leeds
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Publisher: Wiley
Date: 03-05-2017
Publisher: Wiley
Date: 05-12-2011
Publisher: Informa UK Limited
Date: 07-10-2012
Publisher: Springer Science and Business Media LLC
Date: 04-05-2015
DOI: 10.1038/NCHEM.2259
Abstract: Borromean rings or links are topologically complex assemblies of three entangled rings where no two rings are interlinked in a chain-like catenane, yet the three rings cannot be separated. We report here a metallacycle complex whose crystalline network forms the first ex le of a new class of entanglement. The complex is formed from the self-assembly of CuBr2 with the cyclotriveratrylene-scaffold ligand (±)-tris(iso-nicotinoyl)cyclotriguaiacylene. In idual metallacycles are interwoven into a two-dimensional chainmail network where each metallacycle exhibits multiple Borromean-ring-like associations with its neighbours. This only occurs in the solid state, and also represents the first ex le of a crystalline infinite chainmail two-dimensional network. Crystals of the complex were twinned and have an unusual hollow tubular morphology that is likely to result from a localized dissolution-recrystallization process.
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B816864D
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B702509M
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC38768B
Abstract: A new bis(disulfide)-linked offset dimer is formed from a dithiolated analogue of cyclotriguaiacylene. Unlike a similar tris(disulfide)-linked ex le, this is not a true cryptophane as the offset nature of the dimerisation and intramolecular host-guest interactions preclude its use as a host.
Publisher: Wiley
Date: 11-12-2014
DOI: 10.1002/9781119951438.EIBC2222
Abstract: Metal‐organic frameworks (MOFs) contain metal cations that are inherent to their framework structure and may also be intrinsic to material properties such as magnetism, catalysis, and luminescence. Uptake of additional metals by a MOF has the potential to introduce new functionality or to alter functionality and thus finds a variety of potential applications. For ex le, catalysis, luminescence or color changes for sensors, ion exchange, removal of metal contaminants from the atmosphere or solution, altering gas‐binding properties of a MOF by creation of electric dipoles on the framework surface, and ion transport for battery applications. Post‐synthetic modification (PSM) involves the solid‐state MOF framework being chemically altered. PSM of MOFs may occur such that additional or new heterometallic cations or metal‐containing moieties are taken up by the MOF. There are a number of mechanisms to effect metal uptake in MOFs. Direct grafting of metal cations onto the MOF frameworks can occur at pendant, unmetallated sites embedded within the framework linker ligand. For ex le, through pendant thiols or alcohol groups lining framework pores, or through unmetallated chelating or macrocyclic groups embedded in the framework. Organometallic fragments can be directly grafted onto the arene rings of MOF ligands. PSM of pendant organic functional groups can be used to either create a new ligand group for metal binding, or to directly tether a metal complex. Other mechanisms for forming pendant metal‐binding groups are to demetallation a nonstructural metal cation site, for ex le, within a linking metal‐salen ligand, or to use a ligand defect approach where ligands with additional binding sites are doped into the MOF during its synthesis. Ion exchange of counter‐anions within the pores of anionic MOFs is another method for metal uptake, and often involves the exchange of an organic counter‐cation for a metal. Metal‐containing guest molecules can be absorbed into the pores of MOFs through solution immersion or chemical vapor deposition techniques. Such complexes are often precursors to form metal@MOFs hydrid materials where metal nanoparticles are embedded in the pores. Exchange may also occur between structural components of a MOF, and metal cation metathesis, also referred to as transmetallation, is where metal cations within the framework are substituted for a different cation, usually with retention of the gross original framework structure.
Publisher: Royal Society of Chemistry (RSC)
Date: 2000
DOI: 10.1039/A910256F
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B410242H
Abstract: A novel conformation of p-sulfonatocalix[5]arene has been established in the solid state with two calixarenes organised in a 'bis-molecular capsule' shrouding two di-protonated DABCO molecules and two water molecules within.
Publisher: Elsevier BV
Date: 03-2003
Publisher: Wiley
Date: 12-04-2005
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B716733B
Publisher: Royal Society of Chemistry (RSC)
Date: 2005
DOI: 10.1039/B413821J
Abstract: p-Sulfonatocalix[6]arene, organised in the 'double cone' conformation, has multi-guest capability binding either L- or D-leucine in a single crystal in a bi-layer type arrangement from a racemic mixture of the amino acid.
Publisher: Wiley
Date: 02-12-2011
Abstract: Five new coordination polymers based on a new 2,2'-bipyridine derived ligand N,N'-bis(pyridin-4-yl)-2,2'-bipyridine-5,5'-dicarboxamide (=L) are reported herein. Isostructural three-dimensional coordination polymers with a rare (4,6)-connected network of {4(4).6(2)}(3){4(6).8(9)}(2) topology were synthesised from Cu(NO(3))(2), Zn(NO(3))(2) or a mixture of Cu(NO(3))(2)/Fe(BF(4))(2) with L in complexes {[Cu(5)L(6)]·(NO(3))(10)·(H(2)O)(18)}(∞) (1), {[Zn(5)L(6)]·(NO(3))(10)·(H(2)O)(18)}(∞) (2) and {[Fe(x)Cu(y)L(6)]·(NO(3))(10)·(H(2)O)(18)}(∞) (3 where x+y=5). Complexes with two-dimensional grid structures resulted from treatment with CoCl(2) or Cd(NO(3))(2) with L in complexes {[CoLCl(2)]·DMF}(∞) (4) and {CdL(NO(3))(2)}(∞) (5).
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC03499K
Abstract: Deep-blue luminescent [{Ir(C^N) 2 } 3 (L) 2 ] 3+ coordination cages with structurally integral pyridyl-azo-phenyl groups can be reversibly photo-isomerised with no compositional change.
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B410929E
Publisher: Elsevier BV
Date: 2009
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B100578M
Publisher: American Chemical Society (ACS)
Date: 21-10-2014
DOI: 10.1021/CG501231V
Publisher: American Chemical Society (ACS)
Date: 08-04-2003
DOI: 10.1021/CG025613X
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CE00467A
Abstract: Propylated cyclotriveratrylene ligands with N-donor groups form coordination polymers where the propyl groups aggregate or form a Pd 6 L 4 cage.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B914285A
Abstract: The structure-directing effect of guest binding in metallo-supramolecular assemblies of host-type ligands is observed with a 2-D coordination polymer formed between Cd(OAc)(2) and tris(4-pyridylmethylamino)cyclotriguaiacylene in the presence of the globular guest o-carborane, and a trinuclear Cd(II) complex formed in solution in the absence of the bulky guest.
Publisher: Elsevier BV
Date: 11-2001
Publisher: Informa UK Limited
Date: 2000
Publisher: American Chemical Society (ACS)
Date: 08-11-2001
DOI: 10.1021/CG000004F
Publisher: International Union of Crystallography (IUCr)
Date: 15-11-2003
DOI: 10.1107/S0021889803016182
Abstract: The crystal structures of the energetic materials biguanidinium mono-dinitramide C 2 H 8 N{}_{5}^{\\,+}.N 3 O{}_{4}^{\\,-}, (BIGH)(DN), and biguanidinium bis-dinitramide C 2 H 9 N{}_{5}^{\\,2+}.2N 3 O{}_{4}^{\\,-}, (BIGH 2 )(DN) 2 , have been determined at several temperatures in the range 85–298 K using single-crystal X-ray diffraction techniques. The thermal expansion second-rank tensors have been determined to describe the thermal behavior of the crystals studied. Strongly anisotropic thermal expansion is most important in the direction perpendicular to the least-squares planes of the dinitramide ions in both cases, suggesting that the atomic thermal motion is significantly anharmonic in these crystals. Anharmonicity of thermal motion is also evident from the non-linear temperature dependence of the atomic displacement parameters. Rigid-body analysis of thermal motion both of dinitramide anions and of biguanidinium cations was performed using the libration and translation second-rank tensors. For both compounds, the libration thermal motion is strongly anisotropic with the dominating libration axes oriented in a similar manner in both anions and cations. Although the translation motion of the ions is not strongly anisotropic, the axes of largest thermal displacements are close to the directions of greatest thermal expansion of the crystals.
Publisher: Wiley
Date: 1999
DOI: 10.1002/(SICI)1099-0682(199901)1999:1<195::AID-EJIC195>3.0.CO;2-D
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CE00003B
Publisher: Elsevier BV
Date: 2001
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B810090J
Publisher: American Chemical Society (ACS)
Date: 10-07-2007
DOI: 10.1021/IC700507J
Abstract: The hydrothermal synthesis and structural characterization of a number of complex compounds containing the alent tris(oxalato-O,O')germanate anion, [Ge(C2O4)3]2-, or the neutral bis(oxalate-O,O')germanium fragment, [Ge(C2O4)2], with transition-metal (M) cationic complexes of 1,10'-phenanthroline (phen) is reported: [M(phen)3][Ge(C2O4)3].xH2O [where M2+ = Cu2+ (1a and 1b), Fe2+ (2a and 2b), Ni2+ (3), Co2+ (4) x = 0.2 for 2b], [MGe(phen)2(mu2-OH)2(C2O4)2] [where M2+ = Cd2+ (5) and Cu2+ (6)]. The isolation of two polymorphs with Cu2+ (1a and 1b) and other pseudo-polymorphs for Fe2+ (2a and 2b) was rationalized based on slightly different molar ratios for the starting materials. All compounds have been characterized using EDS, SEM, vibrational spectroscopy (FT-IR and FT-Raman), thermogravimetry, and CHN elemental composition and their structure determined on the basis of single-crystal X-ray diffraction studies. The crystal packing of the different chemical moieties for each series of compounds was discussed on the basis of the various intermolecular interactions present (strong C-H...pi and weak C-H...O hydrogen-bonding interactions, C-H...pi and pi-pi contacts).
Publisher: American Chemical Society (ACS)
Date: 05-06-2013
DOI: 10.1021/CG4005328
Publisher: Springer Science and Business Media LLC
Date: 2001
Publisher: Royal Society of Chemistry (RSC)
Date: 08-2014
DOI: 10.1039/C4CE90109F
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B704366J
Abstract: The regiospecific synthesis of C3 macrocyclic scaffolds possessing multiple different functional groups is described.
Publisher: Wiley
Date: 29-04-2008
Abstract: Investigations of a previously reported ligand, hexakis(2-pyridylmethyl)cyclotricatechylene (1), and a new tetrameric bridging ligand, octakis(2-pyridylmethyl)cyclotetracatechylene (2), the latter constructed on a larger cyclotetraveratrylene (CTTV) scaffold, are described. Variable-temperature NMR studies support a "sofa" conformation for 2, akin to studies on the parent compound. The coordination chemistry of 2 and its smaller trimeric homologue have also been investigated with silver(I), copper(II) and palladium(II) salts. An unexpected chelating mode was observed for 1 in the structure of DMF subset[Pd(3)Cl(6)(1)] x DMF, whereby the palladium cations bridge two veratrole subunits rather than chelating within a single subunit. In the structure of [Ag(4)(2)][Co(C(2)B(9)H(11))(2)](4) x 2.8 CH(3)CN x H(2)O, ligand 2 adopts a "boat" conformation, whereas in [Pd(4)Cl(8)(2)] x 4 H(2)O, (1)H NMR spectroscopic studies and calculations indicate that the ligand is present in a previously unobserved "distorted-cup" conformation. This conformation was calculated to be approximately 90 kJ mol(-1) lower in energy than the alternative "sofa" conformation. Thus, coordination-induced conformational control over CTTV derivatives offers new routes to exploit the host-guest chemistry of these compounds.
Publisher: Springer Science and Business Media LLC
Date: 15-12-2011
DOI: 10.1038/NCHEM.1224
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B009437O
Publisher: Springer Science and Business Media LLC
Date: 08-11-2006
Publisher: Royal Society of Chemistry (RSC)
Date: 2002
DOI: 10.1039/B202197H
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B102140K
Publisher: Elsevier BV
Date: 03-2008
Publisher: American Chemical Society (ACS)
Date: 19-05-2004
DOI: 10.1021/IC049849X
Abstract: Crystalline materials have been isolated and characterized from mixing the silver carborane salts Ag(CB(11)H(12)) or Ag[Co(C(2)B(9)H(11))(2)] with nitrile ligands, either terminal acetonitrile or potentially bridging alkanedinitriles. Most of the complexes showed B-H...Ag interactions between the silver center and carborane anion. [Ag(acetonitrile)(2)(CB(11)H(12))] has a hexagonal network structure. [Ag(malonitrile)(2)(CB(11)H(12))] is a discrete dimeric complex, while [Ag(4)(succinonitrile)(5)(CB(11)H(12))(4)], [Ag(glutaronitrile)(2)][Co(C(2)B(9)H(12))(2)], and [Ag(glutaronitrile)[Co(C(2)B(9)H(11))(2)]] all show coordination chain structures. The carborane anions in [Ag(adiponitrile)[Co(C(2)B(9)H(11))(2)]] bridge between Ag centers to give a 3D CdSO(4)-related coordination polymer. The structure of [Ag(malonitrile)(2)](BF(4)) was also determined to have an unusual chiral diamondoid structure with a skewed 2-fold interpenetration.
Publisher: Wiley
Date: 03-07-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC46722H
Abstract: We describe two mesocate assemblies that contain either an ethylene glycol or ammonium group which form a heteroleptic one-dimensional infinite chain in the solid state.
Publisher: Wiley
Date: 07-2011
Publisher: American Chemical Society (ACS)
Date: 05-03-2003
DOI: 10.1021/IC026071B
Abstract: Despite containing only relatively small molecular components, the structure of [Eu(H(2)O)(9)](1.5)(CTV)(6)(CH(3)CN)(5.5)(H(2)O)(7.5)[Co(C(2)B(9)H(11))(2)](4.5) (C(191)H(337.5)B(81)Co(4.5)Eu(1.5)N(5.5)O(57), a = 54.590(2) A, b = 37.5788(17) A, c = 31.8067(14) A, beta = 116.573(2) degrees, monoclinic, C2/c, Z = 8) is of an unusually large size and level of complexity, with an intricate hydrogen-bonding network formed between lanthanide aquo ions, water, and the small host molecule cyclotriveratrylene (=CTV). The 3D hydrogen-bonded network structure that results is unique and too complicated to apply the usual topological analysis. Instead a simplified model using structural subunits is described.
Publisher: Wiley
Date: 03-03-2014
Abstract: The C3-symmetric chiral propylated host-type ligands (±)-tris(isonicotinoyl)-tris(propyl)-cyclotricatechylene (L1) and (±)-tris(4-pyridyl-4-benzoxy)-tris(propyl)-cyclotricatechylene (L2) self-assemble with Pd(II) into [Pd6L8](12+) metallo-cages that resemble a stella octangula. The self-assembly of the [Pd6(L1)8](12+) cage is solvent-dependent broad NMR resonances and a disordered crystal structure indicate no chiral self-sorting of the ligand enantiomers in DMSO solution, but sharp NMR resonances occur in MeCN or MeNO2. The [Pd6(L1)8](12+) cage is observed to be less favourable in the presence of additional ligand, than is its counterpart, where L=(±)-tris(isonicotinoyl)cyclotriguaiacylene (L1 a). The stoichiometry of reactant mixtures and chemical triggers can be used to control formation of mixtures of homoleptic or heteroleptic [Pd6L8](12+) metallo-cages where L=L1 and L1 a.
Publisher: Royal Society of Chemistry (RSC)
Date: 2005
DOI: 10.1039/B505579B
Publisher: Elsevier BV
Date: 04-2014
Publisher: American Chemical Society (ACS)
Date: 21-03-2007
DOI: 10.1021/CG070048P
Publisher: Royal Society of Chemistry (RSC)
Date: 2006
DOI: 10.1039/B609356F
Publisher: Wiley
Date: 17-08-2001
DOI: 10.1002/1521-3765(20010817)7:16<3616::AID-CHEM3616>3.0.CO;2-V
Abstract: Reactions of sodium p-sulfonatocalix[4]arene and scandium(III) tristriflate in the presence, and absence, of [18]crown-6 give the crystalline complexes [Sc2(mu-OH)2(H2O)10][Na4(H2O)8-[calix[4]arene(SO3)4]2).13 H2O and [[Sc2(mu-OH)2(H2O)8][Sc(H2O)4]2[calix[4]-arene(SO3)4-H+]2([18]crown-6).16H2O. Both complexes involve novel coordination polymers with calixarene units linked through sodium or scandium centers and also feature capsule assemblies through to the head-to-head association of calixarenes. A linear array of capsules associated with an infinite chain of aquo-bridged sodium ions, and an aquated hydroxy-bridged scandium(III) dimer, [Sc2(mu-OH)2(H2O)10]4+, are found in the absence of the crown ether. In the presence of [18]crown-6 both hydrated scandium monomers and dimers bridge between calixarenes in a two-dimensional coordination network. The crown ethers reside in cavities created by two calixarenes from adjacent polymeric sheets via a variety of supramolecular interactions(hydrogen-bonding, shape complementarity), and effectively add a third dimension to the network. The extended structure of both of these polymers is highly porous, and resembles a bilayer.
Publisher: Elsevier BV
Date: 08-1999
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CC01284J
Abstract: A new carboxylic acid functionalised cavitand forms [Cu(3)L(2)] metallo-cryptophanes with Cu(OAc)(2) that can be linked together into dimers with the bridging ligand 1,2-bis(4-pyridyl)ethylene. Reaction of the cavitand with Co(OAc)(2) gives a metallo-cryptophane with a central Co(7) cluster.
Publisher: Wiley
Date: 18-12-2018
Abstract: Two new heteroleptic metal-organic framework materials show strong adsorption of H
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9DT03400E
Abstract: Trimetallic Pd–NHCs with a cyclotriguaiacylene scaffold display variable host–guest interactions and, along with monomeric analogues, catalyse cross-coupling reactions with a switch in the normal regioselectivity.
Publisher: Wiley
Date: 09-2001
DOI: 10.1002/1099-0690(200109)2001:17<3227::AID-EJOC3227>3.0.CO;2-V
Publisher: American Chemical Society (ACS)
Date: 25-05-2005
DOI: 10.1021/CG050061E
Publisher: Wiley
Date: 30-05-2003
Publisher: Royal Society of Chemistry (RSC)
Date: 10-01-2002
DOI: 10.1039/B109625G
Publisher: American Chemical Society (ACS)
Date: 09-1997
DOI: 10.1021/OM970466Z
Publisher: Royal Society of Chemistry (RSC)
Date: 1999
DOI: 10.1039/A901719D
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2OB26262B
Abstract: The design and synthesis of a new 2-O-alklyated benzamide α-helix mimetic is described. Comparison with regioisomeric 3-O-alkylated benzamides permits a preliminary evaluation of the role that mimetic curvature has in determining molecular recognition properties.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1DT10662G
Abstract: A series of new 1D chain and 2D coordination polymers with cyclotriguaiacylene-type ligands are reported. A zig-zag 1D coordination chain is found in complex [Cd(2)(4ph4py)(NO(3))(3)(H(2)O)(2)(DMA)(2)]·(NO(3))·(DMA)(4), where 4ph4py = tris[4-(4-pyridyl)benzoyl]-cyclotriguaiacylene and DMA = dimethylacetamide, while complex [Zn(4ph4py)(2)(CF(3)COO)(H(2)O)]·(CF(3)COO)(NMP)(7), where NMP = N-methylpyrrolidone, has a doubly bridged coordination chain structure. Complexes [M(3ph3py)(NO(3))(2)]·(NMP)(4) where M = Co or Zn, 3ph3py = tris[3-(3-pyridyl)benzoyl]cyclotriguaiacylene, are isostructural and feature 1D ladder coordination chains. Complexes [Cd(2)(4ph4py)(2)(NO(3))(4)(NMP)]·(NMP)(9)(H(2)O)(4) and [Co(4ph4py)(H(2)O)(2)]·(NO(3))(2)·(DMF)(2), where DMF = dimethylformamide, both have (3,4)-connected 2D coordination polymers with a rare (4(2).6(2))(4.6(2))(2) topology. A 2D coordination polymer with this topology is also found in complex [Co(2)(3ph4py)(2)(NO(3))(H(2)O)(5)]·(NO(3))(3)·(DMF)(9) where 3ph4py = tris[3-(4-pyridyl)benzoyl]cyclotriguaiacylene. All 2D coordination polymer complexes are interpenetrating or polycatenating. [Co(2)(3ph4py)(2)(NO(3))(H(2)O)(5)](3+)polymers form a 2D→3D polycatenation showing self-complementary "hand-shake" interactions between the host-type ligands.
Publisher: Wiley
Date: 30-12-2006
Publisher: Wiley
Date: 05-04-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2006
DOI: 10.1039/B600357E
Abstract: Mixed-ligand Cu(II) complexes with deprotonated trimesic acid and phenanthroline-type ligands were synthesised by solvothermal methods to form 2-D infinite hexagonal hydrogen bonded structures with additional trimesic acid (H3tma) molecules. The complex [Cu(phendione)2(H2tma)2].2(H3tma).1.65(CF3CH2OH).2.5(H2O), where phendione = 1,10-phenanthroline-5,6-dione, has hydrogen bonded networks of [Cu(phendione)2(H2tma)2] complexes interspersed with layers of H3tma with a topologically identical hydrogen bonding network. Whereas in [Cu(1,10-phenanthroline)(H2tma)2]2.2(H3tma), a dimeric Cu(II) complex hydrogen bonds directly to additional H3tma molecules to form a three-layered 2-D network resembling an infinite sandwich. The synthesis and structures of simple Cu(II) complexes of the phendione ligand are also reported. One of these, [Cu(phendione)2Br2] shows a particularly polar packing arrangement.
Publisher: Wiley
Date: 25-11-190728635
Abstract: Control over the conformational flexibility of p-sulfonatocalix[6]arene in the solid state is possible in the presence of varied stoichiometric amounts of [18]crown-6 and selected lanthanide(III) chlorides. Complexes 1 and 2 have the calixarene in the elusive up-up double cone conformation, whilst complex 3 has the calixarene in the centrosymmetric up-down double partial cone conformation, whereby it acts as a ergent receptor. Complex 1 has a double molecular capsule arrangement which is composed of two p-sulfonatocalix[6]arenes shrouding two [18]crown-6 molecules, also with both coordinated and homoleptic aquated lanthanide ions around the hydrophilic sulfonate rims of the calixarenes. Complex 2 has a ferris wheel arrangement with one lanthanide metal centre coordinated to a sulfonate group and another coordinated to the crown ether whilst tethered to a sulfonate group of the calixarene. Complex 3 forms from a solution with large excess of [18]crown-6, and possesses a crown ether molecule in each of the partial cones and has homoleptic aquated lanthanide ions involved in a complicated hydrogen-bonding regime within the extended structure.
Publisher: Springer Science and Business Media LLC
Date: 22-05-2009
DOI: 10.1038/NCHEM.213
Abstract: Metallosupramolecular chemistry relies on self-assembly processes in which complicated species form through labile dative-covalent interactions. Two remarkable areas of this chemistry are the synthesis of topologically complicated threaded assemblies and of three-dimensional (3D) polyhedral assemblies. Very few polyhedral 3D metallosupramolecular assemblies show threaded motifs within them. Here we report an ex le of a new type of threaded 3D metallosupramolecular assembly built from four organic ligands and four palladium ions, a Pd(4)L(4) so-called 'Solomon's cube' in which interweaving and twisting of the ligands form both Solomon's links and figure-of-eight ring motifs. In the solid state, six of these Pd(4)L(4) tetramers assemble into a hollow spheroid that closely resembles a stellated truncated hexahedron.
Publisher: Royal Society of Chemistry (RSC)
Date: 2005
DOI: 10.1039/B418352P
Publisher: Wiley
Date: 30-09-2005
Publisher: Royal Society of Chemistry (RSC)
Date: 1999
DOI: 10.1039/A907469D
Publisher: International Union of Crystallography (IUCr)
Date: 02-03-2007
Publisher: Informa UK Limited
Date: 2002
Publisher: American Chemical Society (ACS)
Date: 26-03-2012
DOI: 10.1021/CG201512Q
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B819352E
Publisher: Springer Berlin Heidelberg
Date: 30-01-2004
DOI: 10.1007/B14142
Publisher: Royal Society of Chemistry (RSC)
Date: 1999
DOI: 10.1039/A905436G
Publisher: Wiley
Date: 27-01-2012
DOI: 10.1002/9780470661345.SMC053
Abstract: A review of the chemistry and applications of cyclotriveratrylenes (CTVs) and cryptophanes is given. Synthetic approaches to CTVs and cryptophanes are discussed, including the recently reported mild cyclization conditions and strategies for the synthesis of lower symmetry cryptophanes. Host– guest and inclusion chemistry is surveyed, including binding of neutral and organic cations by cryptophanes in solution, clathrate structures of CTVs, the anion‐binding abilities of metalled CTVs and cryptophanes, the fullerene‐binding abilities of CTVs, and xenon binding by cryptophanes and their potential applications in xenon biosensors for imaging applications. The uses of CTVs and crytophanes as molecular platforms for other supramolecular chemistry applications are also discussed. These include development of coordination polymers with CTVs and cryptophanes organic and metallo‐supramolecular prism‐like assemblies, some of which show unusual molecular topologies and self‐organized systems such as liquid crystals and gels.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CE00471A
Abstract: Coordination polymers with molecular recognition sites are assembled using cyclotriveratrylene ligands. Many show differential guest-spaces with host and lattice sites available, however common host–guest and self-inclusion motifs can block sites.
Publisher: Wiley
Date: 27-03-2006
Abstract: The synthesis of the three isomeric tris(pyridylmethylamino)cyclotriguaiacylene cavitands is reported, along with the crystal structures of the 2- and 4-pyridyl derivatives. The generality of a previously described [Ag(2){tris(3-pyridylmethylamino)cyclotriguaiacylene}(2)](2+) dimeric capsule motif and the [Ag(4){tris(4-pyridylmethylamino)cyclotriguaiacylene}(4)](4+) tetrahedron with several silver salts was confirmed in the solid state and the corresponding solution species were investigated by NMR spectroscopy. Host-guest interactions in these systems have been probed and these interactions are demonstrated to alter and influence the self-assembly outcome of the reaction. Notably, introduction of larger glutaronitrile guest molecules to the [Ag(4)L(4)](4+) tetrahedron system prevents formation of the tetrahedral structure, resulting instead in the formation of a 4.8(2) coordination network in the solid state. In the absence of templating acetonitrile guests in the [Ag(2)(3)(2)](2+) capsule system, formation of a cage-based one-dimensional coordination polymer is observed.
Publisher: American Chemical Society (ACS)
Date: 04-09-2004
DOI: 10.1021/IC0493595
Abstract: Exploration into the host-guest supramolecular chemistry of p-sulfonatocalix[6]arene with pyridine N-oxide and 4,4'-dipyridine N,N'-dioxide has resulted in the characterization of three new structural motifs with the calixarene in the "up-down" double partial cone conformation. Two are hydrogen-bonded network structures formed with pyridine N-oxide and either nickel or lanthanide metal counterions (1 and 2, respectively). Complex 1 displays host-guest interactions between pyridine N-oxide and the calixarene in the presence of hexaaquanickel(II) counterions. Complex 2 demonstrates selective coordination modes for different lanthanides involving the calixarene and pyridine N-oxide. The third structure, 3, is a coordination polymer which is formed with 4,4'-dipyridine N,N'-dioxide molecules which span a hydrophilic layer and join lanthanide -sulfonatocalix[6]arene fragments. Although complexes 1-3 all have the calixarene in the "up-down" double partial cone conformation, 1 and 3 form bilayer arrangements within the extended structures while 2 forms a previously unseen corrugated bilayer arrangement.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3CE40776D
Publisher: Wiley
Date: 23-11-2007
Publisher: Wiley
Date: 10-2000
DOI: 10.1002/1099-0682(200010)2000:10<2221::AID-EJIC2221>3.0.CO;2-D
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5SC02776D
Abstract: The redox series [1]0/1+/2+/3+ has been characterised by UV/vis/NIR spectroelectrochemistry, cw EPR, ENDOR and HYSCORE spectroscopies and DF calculations.
Publisher: Wiley
Date: 30-09-2005
Publisher: International Union of Crystallography (IUCr)
Date: 11-09-2004
DOI: 10.1107/S0021889804017832
Abstract: Crystals of γ- and ∊-hexanitrohexaazaisowurtzitane (γ- and ∊-HNIW, space group P 2 1 / n for both crystals) have been investigated in the 100–298 K temperature range using single-crystal X-ray diffraction techniques. Temperature-dependent changes of their crystal lattices have been evaluated from the second-rank thermal expansion tensors. Both lattices undergo anisotropic thermal expansion, that of γ-HNIW being more anisotropic than that of the ∊ phase. Comparison with previously reported predictions from molecular dynamics calculations indicates significant differences. Although there are many short (less than van der Waals) intermolecular interactions in both polymorphs, there is no obvious relationship between the short distances and the difference in thermal expansion behavior. Non-linear temperature dependence of the atomic displacement parameters is indicative of anharmonicity of the crystal mean field potential.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5SC01801C
Abstract: Copper coordination polymers from cavitand ligands are reported including networked cage-motif structures, one of which takes up C 60 from solution.
Publisher: American Chemical Society (ACS)
Date: 16-02-2008
DOI: 10.1021/JA8002149
Publisher: Royal Society of Chemistry (RSC)
Date: 1994
DOI: 10.1039/C39940001049
Publisher: American Chemical Society (ACS)
Date: 05-11-2006
DOI: 10.1021/CG050366T
Publisher: Royal Society of Chemistry (RSC)
Date: 2000
DOI: 10.1039/B002047H
Publisher: International Union of Crystallography (IUCr)
Date: 04-2001
DOI: 10.1107/S0108768100018887
Abstract: The structure of potassium dinitramide (KDN), KN 3 O 4 , has been refined in the temperature range 85–298 K from single-crystal X-ray diffraction data. The unit-cell axial lengths and the cell volume decrease linearly on cooling with the b axis being the most sensitive to the change of temperature. The β cell angle increases with decreasing temperature. The thermal expansion of KDN is significantly anisotropic, expanding along the b axis [010] more than three times the amount parallel to any other crystallographic direction. Other eigenvectors of the thermal expansion tensor lie approximately parallel to the diagonals of the ac plane. A rigid-body analysis of the dinitramide ion using the TLS formalism was performed and shows that the thermal motion of the anion is well represented by the rigid-body model. The eigenvalues of the libration tensor show significant anisotropy, whereas the translation tensor is close to isotropic. The variation of all descriptions of the thermal motion with respect to temperature indicates an anharmonic contribution to the mean field potential. The direction of greatest unit-cell expansion coincides with the largest components of the displacement tensor of the potassium ions and the direction of the largest atomic litudes due to the libration of the dinitramide anions.
Publisher: American Chemical Society (ACS)
Date: 12-2008
DOI: 10.1021/CG700820D
Publisher: Wiley
Date: 05-12-2011
Publisher: Wiley
Date: 23-02-2012
Abstract: Artificial allosterism: A ditopic ligand, which contains both bipyridine and tetra-aza-crown binding sites, coordinates one Cu(II) through all four N-donors of the tetradentate aza-crown unit. Reaction at the bipyridine site with another Cu(II) allosterically changes the aza-crown from being a tetradentate to a tridentate N-donor unit, a change in coordination mode that causes the successive binding of two Cu(II) ions to proceed with severe negative cooperativity (see scheme).
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B405031B
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B821019P
Abstract: New chemistry of the cyclic molecular host cyclotriveratrylene (CTV) includes applications such as in sensors and separations in self-organised materials such as gels, liquid crystals, dendritic systems, and self-assembled monolayers and in metallo-supramolecular chemistry. This tutorial review covers aspects of CTV chemistry interest to supramolecular, coordination and host-guest chemists as well as those interested in self-organised systems.
Publisher: American Chemical Society (ACS)
Date: 19-01-2006
DOI: 10.1021/CG050504E
Publisher: Wiley
Date: 05-04-2012
Publisher: American Chemical Society (ACS)
Date: 23-09-2010
DOI: 10.1021/IC101211N
Abstract: Tris-allyl-cyclotriguaiacylene combines with silver salts to give a range of crystalline network structures and one discrete complex. A number of different coordination modes are found within the complexes including η(2)-allyl, aryl, and OR groups binding to Ag(I). AgSbF(6) gives two types of three-dimensional (3-D) coordination polymer with unusual topologies, along with a discrete Ag(2)L(2) capsule dependent on reaction stoichiometry and reaction conditions. Isostructural coordination chain structures are found with AgBF(4) and AgClO(4), while use of Ag(CF(3)SO(3)) gives two-dimensional (2-D) and 3-D coordination polymers through bridging triflate anions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B105517H
Abstract: The crystalline supramolecular complex [Sr(H2O)8][(CH3CN) [symbol: see text] (CTV)]4(H2O)4[Co(C2B9H11)2]2 features [(CH3CN) [symbol: see text] (CTV)] host-guest interactions, back-to-back tetrameric clusters of CTV host molecules and an extensive hydrogen bonding giving a 3,12-connected net.
Publisher: Wiley
Date: 04-06-1999
DOI: 10.1002/(SICI)1521-3765(19990604)5:6<1828::AID-CHEM1828>3.0.CO;2-P
Publisher: American Chemical Society (ACS)
Date: 25-09-2004
DOI: 10.1021/JA048058R
Abstract: Icosahedral and cuboctahedral arrangements of calixarenes, a nanometer-scale, spheroidal assembly of 12 calixarene molecules, can be manipulated in a highly controlled fashion. Previously, such assemblies were observed to favor placement of the calixarenes at the vertexes of an icosahedron. A supramolecular constraint is employed in order to enforce molecular alignment and produce a cuboctahedral arrangement. The internal volume of the cuboctahedron is approximately 30% greater than that of the icosahedron. Furthermore, in stark contrast to that of the icosahedral Platonic solid, the shell of the cuboctahedral Archimedean solid is porous.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CE00806J
Abstract: 2D M 3 L 2 coordination polymers (M = Re( i ), Cu( ii ), Co( ii ), Ni( ii )) feature metal-linked M 6 L 2 -cages, and the Re( i ) material absorbs iodine.
Publisher: American Chemical Society (ACS)
Date: 05-10-2004
DOI: 10.1021/IC049160S
Abstract: A new 3-fold symmetric molecular host, tris(isonicotinoyl)cyclotriguaiacylene, has been synthesized from cyclotriguaiacylene and isonicotinoyl chloride hydrochloride in 70% yield. Its crystal structure shows dimerization of the host molecules into a capsule-like arrangement. When reacted with Ag[Co(C(2)B(9)H(11))(2)], the host forms a 1-D [ML(2)](n) coordination polymer, which assembles into a 2-D interwoven network through a similar dimerization of the host moieties around acetonitrile guests. Thus, the network structure represents an elegant ex le whereby the solid state structure of the building blocks is echoed in the resulting supramolecular assembly. The 2-D sheets are further stabilized by pi...pi stacking interactions between pyridyl donors of alternate 1-D coordination polymers.
Publisher: Wiley
Date: 02-02-2014
Abstract: Three diplatinum(II) complexes [{PtL} 2 (μ‐thea)] (H 4 thea=2,3,6,7‐tetrahydroxy‐9,10‐dimethyl‐9,10‐dihydro‐9,10‐ethanoanthracene) have been prepared, with diphosphine or bipyridyl “L” co‐ligands. One‐electron oxidation of these complexes gave radical cations containing a mixed‐valent [thea ] 3− ligand with discrete catecholate and semiquinonate centers separated by quaternary methylene spacers. The electronic character of these radicals is near the Robin–Day class II/III border determined by UV/Vis/NIR and EPR spectroscopies. Crystal‐structure determinations and a DFT calculation imply that oxidation of the thea 4− ligand may lead to an increased through‐space interaction between the dioxolene π systems.
Publisher: American Chemical Society (ACS)
Date: 27-09-2012
DOI: 10.1021/IC300940K
Abstract: Pyridyl functionalized host molecules are oxidized to their N-oxide analogues and form a series of coordination polymers and discrete complexes with transition metal cations. Complex {[Ag(3)(NMP)(6)(L1)(2)]·3(ClO(4))}(∞) where L1 = tris(isonicotinoyl-N-oxide)cyclotriguaiacylene, NMP = N-methylpyrrolidone, is a three-dimensional (3-D) 3,6-connected coordination polymer of pyrite-like (pyr) topology and features ligand unsupported argentophilic interactions, while two-dimensional (2-D) 3,6-connected coordination polymers with the rarely reported kagome dual (kgd) topology are found for [M(L1)(2)](2+) where M = Zn, Cd, Cu. Ligand L2 = tris(nicotinoyl-N-oxide)cyclotriguaiacylene forms a 2-D coordination polymer with 4(4) (sql) grid topology in complexes {[M(L2)(2)(DMF)(2)]·2ClO(4)·8(DMF)}(∞) M = Cd or Cu, DMF = N,N'-dimethylformamide, and a double-linked chain structure in {[Co(L2)(2)(DMF)(2)]·2NO(3)·4(DMF)·H(2)O}(∞), and both types of structure feature hand-shake self-inclusion motifs either within or between the polymers. 2-D coordination networks with 6(3) (hcb) topologies are found in complexes {[M(L3)(NO(3))(2)]·2(DMF)}(∞) (M = Cd, Zn) and {[Cu(5)(L3)(2)Cl(10)(NMP)(4)]}(∞) where L3 = tris(2-pyridylmethyl)cyclotriguaiacylene, while [Ag(2)(L3)(2)(NMP)(4)]·2(BF(4))·2(NMP) has a discrete dimeric structure which again shows hand-shake host-guest interactions supported by π-π stacking.
Publisher: American Chemical Society (ACS)
Date: 14-12-2010
DOI: 10.1021/IC901972H
Abstract: The synthesis of five new cyclotriveratrylene derivatives with 4-pyridyl side arms is reported, along with the crystal structures of three of these. Three ligands with extended 4-pyridylphenyl side arms and a ligand derived from cyclotriphenolene have been shown to form [Pd(6)L(8)](12+) stella octangula assemblies using diffusion-ordered spectroscopy NMR and electrospray MS techniques. This confirms the generality of the stella octagula assembly, providing that the ligand arms show a degree of rigidity. The more flexible ether-linked ligand tris(4-pyridylmethyl)cyclotriguaiacylene forms a smaller [Pd(3)L(4)](6+) bowl-shaped assembly in the solid state and in solution. The previously reported ligand tris(4-pyridylmethylamino)cyclotriguaiacylene forms a similar assembly in solution.
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B407207C
Publisher: Wiley
Date: 20-04-2017
Publisher: Springer Science and Business Media LLC
Date: 1999
Publisher: Informa UK Limited
Date: 2006
Publisher: Wiley
Date: 08-03-2021
Abstract: Diversity, equality, and inclusion (DEI/EDI) are pressing issues in chemistry and the natural sciences. In this Essay we share how an area‐specific approach is “calling in” the community so that it can act to address EDI issues, and support those who are marginalised. Women In Supramolecular Chemistry (WISC) is an international network that aims to support equality, ersity, and inclusion within supramolecular chemistry. WISC has taken a field‐specific approach using qualitative research methods with scientists to identify the support that is needed and the problems the supramolecular community needs to address. Herein, we present survey data from the community which highlight the barriers that are faced by those who take career breaks for any reason, a common ex le is maternity leave, and the importance of mentoring to aid progression post‐PhD. In conclusion, we set out an interdisciplinary and creative approach to addressing EDI issues within supramolecular chemistry.
Publisher: Royal Society of Chemistry (RSC)
Date: 2003
DOI: 10.1039/B303478J
Abstract: The 1:1 crystalline intercalation complex (C60)(CHBr3) is an entirely new type of fullerene-haloform complex with an irregular structure comprised of C60 molecules interspersed with zigzag chains of disordered bromoform molecules.
Publisher: Wiley
Date: 10-11-2008
Abstract: A series of clathrate and metal complexes with cyclotriveratrylene-like molecular host ligands show a similar dimeric homomeric inclusion motif in which a ligand arm of one host is the intra-cavity guest of another and vice versa. This "hand-shake" motif is found in the trinuclear transition metal complex [Cu(3)Cl(6)(1)]CH(3)CN1.5 H(2)O in which 1 is tris(4-[2,2',6',2''-terpyridyl]benzyl)cyclotriguaiacylene in the self-included M(4)L(4) tetrahedral metallo-supramolecular assembly [Ag(4)(2)(4)] (BF(4))(4) in which 2 is tris-(2-quinolylmethyl)cyclotriguaiacylene in the 1D coordination chains [Ag(4)]ReO(4) CH(3)CN and [Ag(5)]SbF(6)3 DMFH(2)O in which 4 is tris(1H-imidazol-1-yl)cyclotriguaiacylene and 5 is tris{4-(2-pyridyl)benzyl}cyclotriguaiacylene and in the acetone clathrate of tris{4-(2-pyridyl)benzyl-amino}cyclotriguaiacylene. Clathrates of ligands 2 and 5 do not show the same dimeric motif, although 2 has an extended homomeric inclusion motif that gives a hexagonal network.
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B107198J
Publisher: American Chemical Society (ACS)
Date: 12-1992
DOI: 10.1021/JA00052A073
Publisher: Elsevier BV
Date: 11-2001
Publisher: Wiley
Date: 12-02-2019
Abstract: Cryptophanes with flexible linkers derived from (±)-tris-(4-formyl-phenyl)-cyclotriguaiacylene with either bisoxydi(ethylamine) or bis(aminopropyl)ether were isolated as single crystals, the crystal structures of which showed the proposed, but previously uncharacterised, out-in conformation, in which both cyclotriguaiacylene fragments adopt a crown conformation with one crown sitting inside the other. The usual cage-like out-out conformation of the cryptophanes was observed when crystals were dissolved upon heating, and the molecules collapsed back to the out-in isomers over time. In contrast, a cryptophane also derived from (±)-tris-(4-formyl-phenyl)-cyclotriguaiacylene but with rigid dibenzalhydrazine linkers was isolated as the more usual out-out isomer.
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B407165D
Publisher: Wiley
Date: 21-04-2004
Abstract: Halogenated carbaborane ions [CB(11)H(6)X(6)](-) in which X=Cl or Br have been combined with the host molecule cyclotriveratrylene (CTV) and Group 1 metal cations to give crystalline materials. The complexes [Na(ctv)(H(2)O)(CB(11)H(6)X(6))](CF(3)CH(2)OH) feature chiral Na-CTV coordination chains with complexation of the [CB(11)H(6)X(6)](-) ion by the Na(+) ion, together with the CTV molecular cavity. The coordination chains are hydrogen bonded together to give a puckered two-dimensional hexagonal grid structure. [K(ctv)(CB(11)H(6)Cl(6))(CF(3)CH(2)OH)(0.5)] is essentially isostructural. Complexes [Rb(ctv)(CB(11)H(6)Br(6))(H(2)O)] and [Cs(ctv)(CB(11)H(6)X(6))(CH(3)CN)] are coordination polymers with related distorted hexagonal grid structures. Use of N,N'-dimethylformamide (DMF) as a solvent results in an entirely different type of assembly, with [Na(2)(dmf)(4)(H(2)O)(2)(ctv)][(dmf)(0.5)(ctv)][CB(11)H(6)Br(6)](2) showing unusual [Na-mu-(dmf)-Na] bridges, and once again forming a distorted hexagonal coordination polymer.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4DT00237G
Abstract: 1 H NMR studies have revealed that a [Pd 6 L 8 ] 12+ stella octangula cage can act as host to two molecules of alkyl sulfate with chain lengths of 8–14 carbons.
Publisher: American Chemical Society (ACS)
Date: 03-10-2014
DOI: 10.1021/JA508502U
Abstract: Pd3L2 metallo-cryptophane cages with cyclotriveratrylene-type L ligands can be stabilized by use of a bis-N-heterocyclic carbene as an auxiliary cis-protecting ligand, while use of more common protecting chelating ligands such as ethylenediamine saw a Pd3L2 to Pd6L8 rearrangement occur in solution. The crystalline Pd3L2 complexes act as sponges, taking up 1,2-dichorobenzene or iodine in a single-crystal-to-single-crystal fashion despite not exhibiting conventional porosity.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC10806A
Abstract: Crystalline M(3)L(2) complexes with either single cage or triply interlocking [2]catenane chiral structures are formed the self-assembly of host-like ligands with transition metals.
Publisher: Wiley
Date: 18-03-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC01062E
Abstract: The chiral self-sorting in the formation of homochiral Pd 6 L 8 capsules consisting of cyclotriveratrylene (CTV)-based chiral tritopic ligands and Pd( ii ) ions takes place through the initial formation of heterochiral Pd 6 L 8 X 2 (X indicates a leaving ligand) immature capsules (ICs) followed by the correction of chirality in the ICs assisted by the free tritopic ligands to lead to the homochiral capsules.
Publisher: Royal Society of Chemistry (RSC)
Date: 1999
DOI: 10.1039/A902095K
Publisher: Royal Society of Chemistry (RSC)
Date: 14-06-2002
DOI: 10.1039/B203688F
Abstract: p-Phenylcalix[5]arene shows a strong and selective binding of C60 in toluene resulting in crystallisation of a hemispherically inter-digitated 2:1 complex the receptor itself crystallizes from toluene with self assembly through phenyl group inclusion.
Publisher: International Union of Crystallography (IUCr)
Date: 20-03-2004
Publisher: Royal Society of Chemistry (RSC)
Date: 2002
DOI: 10.1039/B111197N
Publisher: American Chemical Society (ACS)
Date: 28-10-1999
DOI: 10.1021/OL9908272
Publisher: Wiley
Date: 08-03-2021
Abstract: Diversity, equality, and inclusion (DEI/EDI) are pressing issues in chemistry and the natural sciences. In this Essay we share how an area‐specific approach is “calling in” the community so that it can act to address EDI issues, and support those who are marginalised. Women In Supramolecular Chemistry (WISC) is an international network that aims to support equality, ersity, and inclusion within supramolecular chemistry. WISC has taken a field‐specific approach using qualitative research methods with scientists to identify the support that is needed and the problems the supramolecular community needs to address. Herein, we present survey data from the community which highlight the barriers that are faced by those who take career breaks for any reason, a common ex le is maternity leave, and the importance of mentoring to aid progression post‐PhD. In conclusion, we set out an interdisciplinary and creative approach to addressing EDI issues within supramolecular chemistry.
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B009581H
Publisher: Wiley
Date: 03-11-2000
DOI: 10.1002/1521-3757(20001103)112:21<3993::AID-ANGE3993>3.0.CO;2-Y
Publisher: Wiley
Date: 23-11-2007
Publisher: American Chemical Society (ACS)
Date: 31-01-2004
DOI: 10.1021/CG030029P
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/CH05325
Abstract: New crystalline coordination networks based on Ag(i) and N-bridging ligands — pyrazine (pyz), 4,4′-bipyridine (bpy), and 2,3-bis-(2-pyridyl)pyrazine (bppz) — incorporating carborane monoanions (CB11H12)− or [Co(C2B9H11)2]− were isolated and characterized using single crystal X-ray diffraction, microanalysis, and infrared spectroscopy. All the complexes with the bpy and bppz ligands reveal 1D coordination infinite chains involving the Ag(i) and the ligands, and layered extended structures with rows of carborane anions between the layers of chains. Interestingly, two polymorphs of the complex [Ag(bpy)(CH3CN)][Co(C2B9H11)2] were observed. The complex [Ag(pyz)(CH3CN)2][Co(C2B9H11)2] shows a 1D coordination polymer, while the pyz complex with the smaller carborane anion {[Ag(pyz)](CB11H12)} exhibits a 3D coordination network structure with four Ag···H−B interactions between the silver centre and carborane anions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1RA07811A
Abstract: Multi-responsive colorimetric sensors based on the hydrazone motif, which are perfectly suited for chemo sensing applications have been developed.
Publisher: Wiley
Date: 03-11-2000
DOI: 10.1002/1521-3773(20001103)39:21<3835::AID-ANIE3835>3.0.CO;2-Q
Publisher: Wiley
Date: 22-07-1999
DOI: 10.1002/(SICI)1521-3765(19990802)5:8<2295::AID-CHEM2295>3.0.CO;2-O
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B311288H
Publisher: Royal Society of Chemistry (RSC)
Date: 1999
DOI: 10.1039/A902124H
Publisher: Elsevier BV
Date: 06-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 1999
DOI: 10.1039/A900787C
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC03071D
Abstract: Ligand-functionalised cyclotriveratrylene derivatives self-assemble to afford coordination cages and topologically non-trivial constructs, including controlled assembly of M 3 L 2 metallo-cryptophane and M 6 L 8 cages.
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