Unprecedented Coupling of Allenylidene and Diynyl Metal Complexes: A Bimetallic Ruthenium System with a C7 Conjugated Bridge

Abstract

A planar “W”-shaped π-conjugated C7 bridge occurs in the bimetallic complexes, such as 1, that are formed by addition of cationic ruthenium allenylidenes to the CγCδ bond of a ruthenium diyne. These complexes possess attractive redox and optical properties that can be tuned by varying the pendant groups.