Selective dimerization of a trinuclear mixed-metal sandwich complex: construction of an axially chiral metal skeleton

Abstract

Certain metal sandwich complexes undergo dimerization through metal–metal bond formation. Here, we found that a reductive dimerization of mixed-metal Pd₂Pt or PdPt₂ sandwich complexes proceeds through selective Pt–Pt bond formation. A restricted rotation at the Pt–Pt bond of the PdPt₂ dimer gave a unique axially chiral structure derived from a heterometal arrangement in a mixed-metal cluster.