Arrangement of a NO ligand and the neighboring sulfur-containing species on a dinuclear ruthenium complex by ligand substitution and linkage isomerism of a dimethyl sulfoxide ligand

Abstract

The substitution reactions of a NO-ligated dinuclear ruthenium complex with ammonium thiocyanate (NH4SCN), sulfur, and dimethyl sulfoxide (DMSO) gave the corresponding mononitrosyl dinuclear complexes, except for reaction with sulfur, where diastereomers of a S2-bridged tetranuclear complex along with a NO- and S2-bridged dinuclear complex were obtained. According to the scan rate dependent cyclic voltammograms, linkage isomerism of a dmso ligand on the dinuclear complex was revealed, and the linkage isomer was obtained from the chemical oxidation.