Synthesis, characterization and electrochemical studies of mixed ligand copper (II) complexes with tridentate bis(2-ethylbenzimidazolyl)disulphide

Abstract

A series of complexes with stoichiometry corresponding to [Cu(L)X₂]nH₂O and mixed ligand complexes [Cu(L)(B)(ClO₄ )] ClO₄.nH₂O have been synthesised, where L is potentially tridentate ligand, bis(2-ethylbenzimidazolyl) disulphide (DTDPB,(C₇H₅N₂(CH₂)₂S)₂} and X=ClO₄^- , Cl^-, NO^3-, HCOO^-, benzoate

while B = pyridine, bipyridine, phenanthroline, morpholine and triazole. X-band EPR spectra of the above complexes examined as a frozen DMSO solution indicate a distorted tetragonal geometry in solution state. The covalency parameter, α² has also been evaluated.