2,3-Bis(2-pyridyl)thieno[3,4-b]pyrazine and its ruthenium(ii) complexes: a new bidentate bridging ligand for enhanced metal–metal communication†

Abstract

A new bidentate bridging ligand, bis(2-pyridyl)thieno[3,4-b]pyrazine is reported, along with its mono- and bi-metallic Ru(II) complexes as representative examples. Spectroscopic, electrochemical and X-ray crystallographic characterization of these species is reported, with the separation of the two Ru(III)/Ru(II) couples of the bimetallic complex suggesting better metal–metal communication than classical polypyridyl analogues.