ORCID Profile
0000-0001-9229-1412
Current Organisation
REQUIMTE - University of Porto
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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: Elsevier BV
Date: 2009
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CE00003B
Publisher: American Chemical Society (ACS)
Date: 19-01-2006
DOI: 10.1021/CG050504E
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B802927J
Abstract: The use of pyridine-2-amidoxime in reaction with NiCl2.6H2O in the presence of NaOMe has led to a cationic NiII 12 cluster with novel structural features each cluster molecule is a ferromagnet with a spin ground state of S = 6 arising from ferromagnetic exchange between the six octahedral NiII ions, but with intercationic interactions also affecting the magnetic properties.
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: Elsevier BV
Date: 03-2008
Publisher: American Chemical Society (ACS)
Date: 21-03-2007
DOI: 10.1021/CG070048P
No related grants have been discovered for Luís Cunha-Silva.