Reactivity of a nitrosyl ligand on dinuclear ruthenium hydrotris(pyrazolyl)borato complexes toward a NO molecule

Abstract

A cationic mononitrosyl dinuclear ruthenium complex was prepared by removing one NO ligand of a dicationic dinitrosyl ruthenium complex using NaN₃. Reduction and oxidation reactions of the mononitrosyl complex led to the isolation of a neutral nitrosyl-bridged complex and a dicationic mononitrosyl complex, respectively, as expected from the cyclic voltammogram. According to the electron count, their reactions with a second NO molecule resulted in an N–N coupling complex from the nitrosyl-bridged complex and the dicationic dinitrosyl complex from the dicationic mononitrosyl complex.