Novel copper(II) and cobalt(II) complexes with selenium substituted imidazolyl imines. The molecular and crystal structure of [N-(2-(phenylseleno)ethyl)-N-(imidazol-2-ylmethylene)amine]copper(II) dichloride

A series of copper(II) and cobalt(II) complexes with novel selenium containing Schiff base ligands obtained from 2- or 3-aminoalkyl phenyl selenides and imidazole carbaldehydes have been synthesized by the interaction of corresponding organic ligands with MCl2·6H2O (M = Cu, Co). The crystal structure of a copper(II) complex with N-(2-(phenylseleno)ethyl)-N-(imidazolyl-2-ylmethylene)amine has been solved by a single-crystal X-ray diffraction method. The copper(II) ions are coordinated by the imine and imidazole nitrogen atoms of organic ligands and two chloride anions in a distorted square planar geometry. The electrochemical investigations of the synthesized ligands and complexes have been made by cyclic voltammetry method. It is established that the first stage of complexes reduction takes place to metal and the reduced forms of complexes are stable in the solution.

Graphical abstractThe synthesis and electrochemical behavior of copper(II) and cobalt(II) complexes with novel selenium containing Schiff base ligands are described. X-ray data confirm the copper(II) ions coordination by the imine and imidazole nitrogen atoms of organic ligands and two chloride anions in a distorted square planar geometry.Figure optionsDownload full-size imageDownload as PowerPoint slide