Abstract
Copper(II) chalcogenolate complexes [Cu(L-L)2Cl2]middot 2H2O (1,2) have been synthesized from the reaction between1,2-diarylchalcogenolato-o-xylene, o-C6H4(CH2EAr)2, (E=Te or Se; Ar=Ph, C6H4Me-4, C6H4OMe-4 and C6H4OEt-4) generated in situ, and CuCl2middot 2H2O in PhH-EtOH in high yields. These complexes are monomeric, non-electrolyte and paramagnetic, indicating a distorted square-planar geometry around the CuII, which is supported by i.r., electronic, e.s.r. and magnetic susceptibility measurements. Polycrystalline and frozen solutions of the compounds have axial e.s.r. signals and the principal components of the g tensors are reported. Electrochemical studies of (1) and (2) using cyclic voltammetry indicate irreversible cathodic peaks in the 0.55–0.78V versus Ag/AgCl range, corresponding to reduction of CuII to CuI and a diffusion-controlled electrode process.
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Gupta, S.K., Parihar, J. Synthesis, spectra and redox behaviour of copper(II) chalcogenolates derived from 1,2-diarylchalcogenolato-o-xylene. Transition Metal Chemistry 23, 117–120 (1998). https://doi.org/10.1023/A:1006930706663
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DOI: https://doi.org/10.1023/A:1006930706663