Synthesis of S,S′- Bis (2-Benzimidazolylmethyl)Dithioglyoxime and Its Complexes with Nickel(II), Palladium(II), Cobalt(II), and Cobalt(III)
- 1 October 1992
- journal article
- research article
- Published by Taylor & Francis in Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry
- Vol. 22 (9) , 1327-1341
- https://doi.org/10.1080/15533179208017845
Abstract
A new vicinal dioxiroe ligand with two 2-benzimidazolylmethyl groups, namely S,S′-bis(2-benzimidazolylroethyl)dithioglyoxime (H2L), has been prepared from cyanogen-di-N-oxide and 2-mercaptomethylbenz-imidazole in dichloromethane at -10°C. Nickel(II), palladium(II), cobalt(II) and cobalt(III) complexes of H2L have a metal : ligand ratio of 1 : 2 and the ligand coordinates through the two N atoms, as most of the vicinal dioximes. [Co(HL)2(L′)Cl] has been prepared with L′ = pyridine, 2,6-dimethylpyridine, 2-mercaptopyridine, 2-car-boxypyridine, pyridine-2-carboxyaldehyde, triphenylphosphine, tri-phenylarsine, together with a chloride ion as axial ligands. All these complexes are slightly soluble in common organic solvents. Structures are proposed according to elemental analyses, 1H, 13C-NMR IR, and UV-Visible spectral data.Keywords
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