ORCID Profile
0000-0002-5366-9168
Current Organisation
University of St Andrews
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Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CE00098D
Abstract: Single crystal CPO-27-Mg, -Zn and its structural isomer UTSA-74 have been prepared through use of acid modulators salicylic acid and benzoic acid, respectively.
Publisher: Elsevier BV
Date: 03-2016
Publisher: Wiley
Date: 04-08-2022
Abstract: Dimagnesium(I) complexes [{( Ar nacnac)Mg} 2 ], where Ar nacnac=HC(MeCNAr) 2 , Ar=Dip=2,6‐ i Pr 2 −C 6 H 3 , Ar=Dep=2,6‐Et 2 −C 6 H 3 , Ar=Mes=2,4,6‐Me 3 −C 6 H 2 , react with iodoarenes in oxidative addition reactions. With iodobenzene, magnesium phenyl and magnesium iodide complex fragments were obtained, and from a reaction with 4‐iodo‐1,2,3,5‐tetramethylpyrazolium iodide, [ Me PZI]I, the pyrazol‐4‐ylidene complex [( Dip nacnac)MgI( Me PZ)] was structurally characterised, alongside other products. The isomeric imidazol‐2‐ylidene complex [( Dip nacnac)MgI( Me NHC)], where Me NHC is 1,3,4,5‐tetramethylimidazol‐2‐ylidene, was prepared and characterised. X‐ray crystal structure determinations and DFT computational studies have been carried out to compare the related complexes. The results show that the Me PZ ligand is higher in energy and more nucleophilic than its more common isomeric Me NHC carbene.
Publisher: American Chemical Society (ACS)
Date: 23-12-2019
DOI: 10.1021/ACS.ORGLETT.9B04404
Abstract: The use of silyl nitronates is reported for the isothiourea-catalyzed synthesis of γ-nitro-substituted silyl esters containing up to two contiguous stereocenters in good yields with excellent enantioselectivities (up to 93% yield and 99:1 er). The serendipitously discovered formation of silyl ester products in this reaction demonstrates a novel platform for catalyst turnover in α,β-unsaturated acyl ammonium catalysis.
Publisher: Elsevier BV
Date: 10-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9DT03976G
Abstract: Exchange of anionic ligands on the Mg 2 2+ ion via an associative mechanism can be facile and depends on ligand sterics and shape.
Publisher: Frontiers Media SA
Date: 02-08-2021
DOI: 10.3389/FCHEM.2021.728845
Abstract: [2.2]Paracyclophane scaffolds have seen limited use as building blocks in supramolecular chemistry. Here, we report the synthesis and characterization of a 1D coordination polymer consisting of silver(I) ions bound to a [2.2]paracyclophane scaffold functionalized with two 4-pyridyl units. The structure of the polymer has been determined from single crystal X-ray diffraction analysis and reveals two different silver coordination motifs that alternate along the 1D coordination polymer. The coordination polymer exhibits strong blue and sky-blue fluorescence in solution and in the crystalline solid state, respectively.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CC01073F
Abstract: Reaction of Woollins' reagent ( WR ) with pyridine yields the P(V) species PhPSe 2 stabilised by pyridine coordination. Its potential as a selenation reagent under mild conditions was shown by calculations and an experimental comparison to WR .
Publisher: Informa UK Limited
Date: 03-03-2016
Publisher: Georg Thieme Verlag KG
Date: 03-02-2015
Publisher: Wiley
Date: 15-10-2018
Abstract: High-efficiency pure blue phosphorescent organic light-emitting diodes (OLEDs) remain one of the grand challenges, principally because the emissive complexes employed either do not possess sufficiently high photoluminescence quantum yields or exhibit unsatisfactory Commission International de l'Éclairage (CIE) coordinates. Here two deep-blue-emitting homoleptic iridium(III) complexes are reported and OLEDs are demonstrated with CIE coordinates of (0.15, 0.05) and maximum external quantum efficiency of 13.4%, which decreases slightly to 12.5% at 100 cd m
Publisher: Wiley
Date: 28-11-2022
Abstract: Four new deep‐blue‐emitting iridium(III) NHC complexes containing sterically demanding ligands are synthesized. The four complexes show bright, deep‐blue emission, with emission maxima between 420 and 427 nm in both acetonitrile solution and 30 wt% doped films in TSPO1 the two meridional isomers showing photoluminescence quantum yields, Φ PL , in doped films of 80% and 89%. The two meridional isomers are used to assess the impact of emitters containing bulky, sterically demanding ligands on the performance of organic light‐emitting diodes (OLEDs). OLEDs employing a stepped doping profile with mer ‐Ir(tfpi_tmBn) 3 as the emitter produce the highest performing devices in this study, with these devices exhibiting deep‐blue [λ EL = 429 nm, CIE = (0.16, 0.08)] emission and a maximum external quantum efficiency (EQE max ) of 14.9%, which decreases to 11.7% at 100 cd m −2 . The performance of the OLEDs shows very good efficiencies and moderate efficiency roll‐offs in comparison to reported phosphorescent deep‐blue OLEDs with CIE y ≤ 0.08, as required for commercial displays. The promising results suggest that the design strategy of adding steric bulk to blue emitting iridium complexes containing NHC ligands is a useful strategy for reducing intermolecular interactions between emitters in OLEDs.
Publisher: Wiley
Date: 12-10-2015
Abstract: The synthesis and characterization of abnormal N‐heterocyclic carbene, cyclic (alkyl)(amino)carbene, and mesoionic carbene copper(I) complexes are reported. These organometallic species are obtained via a versatile and inexpensive synthetic pathway using readily available reactants, namely copper oxide and iminium salts. The catalytic activity of this series of complexes was evaluated in the [3+2] cycloaddition of alkynes with azides (CuAAC). Outstanding catalytic properties were observed for the abnormal NHC‐ and triazolylidene‐based copper(I) complexes. magnified image
Publisher: American Chemical Society (ACS)
Date: 07-2021
Publisher: Wiley
Date: 24-07-2017
Abstract: Halogenated analogues of the neurotoxic alkaloid muscimol were prepared with fluorine, iodine or trifluoromethyl at the 4 position of the isoxazole ring system. These compounds were investigated as agonists for GABA
Publisher: MDPI AG
Date: 19-04-2017
DOI: 10.20944/PREPRINTS201704.0125.V1
Abstract: Substituted bis(iminophosphoranyl)methanes are CH acidic compounds that can form complexes with formally dianionic central carbon centres. The reaction of H2C(Ph2P=NDip)2 (& equiv H2L), Dip = 2,6-diisopropylphenyl, with one equivalent of di-n-butylmagnesium afforded the methanide complex [HLMgnBu] 1. Treatment of complex 1 with phenylsilane in aromatic solvents at elevated temperatures afforded the methanediide complex [(LMg)2] 2 presumably via the MgH intermediate [(HLMgH)n] (n = 1 or 2). The reaction of 1 with LiAlH4 in diethyl ether yielded the AlH complex [HLAlH2] 3. Alternatively, this complex was also obtained from the reaction of H2L with AlH3∙NMe3. The molecular structures of [HLMgnBu] 1, [(LMg)2] 2, and [HLAlH2] 3 are reported. Complex 3 shows no sign of H2 elimination to a methanediide species at elevated temperatures in contrast to the facile elimination of the putative reaction intermediate [(HLMgH)n] (n = 1 or 2) to form [(LMg)2] 2. The chemical properties of complex 2 were investigated and this complex appears to be stable against coordination with strong donor molecules.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9DT00841A
Abstract: New [Au(IPr)(CHR 2 )] complexes have been synthesised through protonolysis reactions of [Au(IPr)(OH)] with moderately acidic substrates, CH 2 R 2 .
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT01798K
Abstract: Sterically demanding NHC aluminium hydride iodide complexes react with one equivalent of NHC to cationic mixed normal – abnormal NHC Al III complexes.
Publisher: Wiley
Date: 13-11-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5DT02542G
Abstract: Subtle changes in the structure of the backbone can lead to profound differences in the binding modes of dithiolato ligands in rhodium and iridium half sandwich complexes.
Publisher: American Chemical Society (ACS)
Date: 18-02-2015
DOI: 10.1021/IC503056Z
Abstract: A series of peri-substituted phosphorus-tellurium systems R'Te-Acenap-PR2 (R' = Ph, p-An, Nap, Mes, Tip Acenap = acenaphthene-5,6-diyl (-C12H8) R = (i)Pr, Ph) exhibiting large "through-space" spin-spin coupling constants and the "onset" of three-center four-electron type interactions is presented. The influence of the substituents at the phosphorus and tellurium atoms as well as their behavior upon oxidation (with S, Se) or metal-coordination (Pt, Au) is discussed using NMR spectroscopy, single-crystal X-ray diffraction, and advanced density functional theory studies including NBO, AIM, and ELI-D analyses.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9SC03857D
Abstract: Fullerene C 60 reacts with dimagnesium( i ) compounds LMgMgL, where L is a monoanionic β-diketiminate ligand, to contact ion complexes [(LMg) n C 60 ], where n is predominantly 2, 4 or 6.
Publisher: MDPI AG
Date: 22-04-2017
Publisher: Wiley
Date: 28-06-2018
Publisher: Informa UK Limited
Date: 25-01-2021
Publisher: Wiley
Date: 27-12-2018
Publisher: Wiley
Date: 23-07-2020
Publisher: Wiley
Date: 27-12-2018
Publisher: American Chemical Society (ACS)
Date: 25-09-2023
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for David Cordes.