N,S,O-Containing organic ligands based on salicylaldehyde and 2-thiosubstituted ethylamines and their complexes with CoII, NiII, and CuII

The reaction of 2,2'-di(2-hydroxybenzaliminoethyl) disulfide (H2L1) and 2-[(2-thioethyl)iminomethyl]phenol (H2L2) with MCl2 center dot xH(2)O (M = Co, Ni, Cu) afforded the [M-2(L-1)Cl-2] and [M(L-2)](2) complexes, respectively. Their structures were determined by the data of electronic and IR spectroscopy and PM3 quantum chemical calculations. The H2L1 ligand and the complexes were studied by electrochemistry (CV and using a rotating disk electrode). The primary electronic changes are localized on the ligand fragment upon the electrochemical oxidation and reduction of the complexes.