Chain Compounds Based on Transition Metal Backbones: New Life for an Old Topic

Abstract

A new link in the chain: After a long period of inactivity, research into one-dimensional compounds based on linear arrays of transition metals is experiencing a renaissance. Recently, oligomeric and polymeric chains have been reported for a variety of transition metals. One such compound of a particularly exotic variety is depicted here, in which a {Pd4}2+ unit is surrounded by a “π-electron sheath” of conjugated polyene ligands.