Characterization of a pseudo-tetrahedral copper(II) complex with two thiolato and two imino donor atoms

Abstract

Structural characterization of a stable copper(II) complex of a new, sterically constrained tetradentate ligand obtained from 2,2′-bis-(1-phenyl-3-methyl-5-t-butylthiopyrazol-4-ylmethyleneamino)biphenyl containing two imino and two thiolato donor atoms reveals a pseudotetrahedral CuN₂S₂ co-ordination array with a CuN₂–CuS₂ dihedral angle of 51.9° and appreciable S ⋯ S interaction; the electronic structure of this compound is related to that of copper centres involving the Cu–S chromophore in copper metalloproteins.