Synthesis and electrochemical properties of bipyrimidine bridged triruthenium complexes

Abstract

A new μ₄-bpym-bridged dimer of an oxoacetao-triruthenium complex with carbonyl, [{Ru₃O(CH₃COO)₅(CO)(py)}₂(μ₄-bpym)], was synthesized. The complex possesses two stable mixed-valence states associated with Ru₃^III,III,II/Ru₃^III,II,II and Ru₃^III,III,III/Ru₃^III,III,II. The IR-spectroelectrochemistry reveals ν(CO) spectra in five oxidation states, Ru₃^III,III,III–Ru₃^III,III,III to Ru₃^III,II,II–Ru₃^III,II,II and both the mixed-valence states show a spectrum indicating medium interaction between the Ru₃ units.