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dimethylglyoxime
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Methanol electrooxidation on a nickel electrode modified by nickel-dimethylglyoxime complex formed by electrochemical synthesis
, Article Journal of Electroanalytical Chemistry ; Volume 588, Issue 1 , 2006 , Pages 155-160 ; 15726657 (ISSN) ; Asgari, M ; Ghannadi Maragheh, M ; Shahrokhian, S ; Sharif University of Technology
Elsevier
2006
Abstract
Nickel-dimethylglyoxime complex (NiDMG) modified nickel electrode (Ni/NiDMG) showed a catalytic activity towards methanol oxidation in NaOH solution. The modified electrode prepared by the dimethylglyoxime anodic deposition on Ni electrode in the solution containing 0.20 mol L-1 NH4Cl + NH4OH (pH 9.50) and 1.0 × 10-4 mol L-1 dimethylglyoxime. The modified electrode conditioned by potential recycling in a potential range of 100-700 mV (vs. SCE) by cyclic voltammetry in alkaline medium (0.10 M NaOH). The results show that the NiODMG film on the electrode behaves as an efficient catalyst for the electrooxidation of methanol in alkaline medium via Ni(III) species formed on the electrode with the...
Electrocatalytic oxidation of methanol on a nickel electrode modified by nickel dimethylglyoxime complex in alkaline medium
, Article Journal of Power Sources ; Volume 144, Issue 1 , 2005 , Pages 21-27 ; 03787753 (ISSN) ; Shahrokhian, S ; Asgari, M ; Ghannadi Maragheh, M ; Irannejad, L ; Khanchi, A ; Sharif University of Technology
2005
Abstract
Electrocatalytic oxidation of methanol on a nickel disc electrode coated with nickel dimethyglyoxime complex (NiDMG), conditioned by potential recycling in a potential range of 100-700 mV (versus SCE) is studied by cyclic voltammetry in alkaline medium (0.10 M NaOH). The results show that the NiODMG layer formed at the surface of electrode behaves as an efficient electrocatalyst for the oxidation of methanol in alkaline medium via Ni(III) species with the cross exchange reaction occurring through out the layer at a low concentration of methanol. A plausible mechanism was proposed for catalytic oxidation of methanol at this modified electrode. Moreover, the effects of various parameters such...
Structural and Computational Studies of Intra- and Intermolecular Interactions in Some New Chloro- and Nitro-cobaloxime Complexes
, M.Sc. Thesis Sharif University of Technology ; Kia, Reza (Supervisor)
Abstract
In this study, a number of chloro and nitro cobaloxime complexes with triphenylarsine and triphenylstibine synthesized from dichloro precursor and their structure were studied. These complexes were identified by FT-IR and 1H-NMR methods also their solid state structure studied by X-ray crystallography of single crystals. Intramolecular interactions of these complexes analyzed and studied by NCIPLOT 3.0 and VMD 1.9.3 programs which has different kind of intramolecular interactions which can be identified by their colors. All these complexes have strong hydrogen bond between hydrogen of oxime group and oxygen of other dimethylglyoxime ligand. Also coordinate covalent bond among ligands and...
First heterobimetallic AgI–CoIII coordination compound with both bridging and terminal –NO2 coordination modes: Synthesis, characterization, structural and computational studies of (PPh3)2AgI– (μ-κ2O,O′:κN-NO2)–COIII(DMGH)2(κN-NO2)
, Article Acta Crystallographica Section C: Structural Chemistry ; Volume 74, Issue 8 , 2018 , Pages 882-888 ; 20532296 (ISSN) ; Batmanghelich, S ; Raithby, P. R ; Sharif University of Technology
Wiley-Blackwell
2018
Abstract
An unusual heterobimetallic bis(triphenylphosphane)(NO2)AgI–CoIII(dimethyl-glyoximate)(NO2) coordination compound with both bridging and terminal –NO2 (nitro) coordination modes has been isolated and characterized from the reaction of [CoCl(DMGH)2(PPh3)] (DMGH2 is dimethylglyoxime or N,N′-di-hydroxybutane-2,3-diimine) with excess AgNO2. In the title compound, namely bis(dimethylglyoximato-1κ2O,O′)(μ-nitro-1κN:2κ2O,O′)(nitro-1κN)bis(triphenyl-phosphane-2κP)cobalt(III)silver(I), [AgCo(C4H7N2O2)2(NO2)2(C18H15P)2], one of the ambidentate –NO2 ligands, in a bridging mode, chelates the AgI atom in an isobidentate κ2O,O′-manner and its N atom is coordinated to the CoIII atom. The other –NO2 ligand...