Rigidity-modulated conformation control: A strategy for incorporating flexible building motifs into metallacycles

Abstract

A rigidity-modulated strategy for the conformational control of a flexible motif in the self-assembly of metallacycles is described; the span of the rigid ligand directs the conformation of the flexible motif by fixing the M⋯M separation, thereby dictating the structure of the metallacycles. © 2007 The Royal Society of Chemistry.