Synthetic [NiFe] models with a fluxional CO ligand

Abstract

A [NiFe] complex [(dppe)Ni(pdt)FeCp*(CO)]⁺ was isolated and characterized as two isomers [1(CO)]⁺ and [1'(CO)]⁺. Heating the solution of [1(CO)]⁺ allowed it to convert into [1'(CO)]⁺. The one-electron oxidation of [1'(CO)]⁺ to [1'(CO)]²⁺ induced fluxional CO movement providing [1(CO)]²⁺. Recovery of [1(CO)]⁺ was realized by the one-electron reduction of [1(CO)]²⁺.