Net [2 + 2] cycloaddition of the metal–oxo bonds of Cp2 MO (Cp = C5H5; M = Mo, W) across the carbon–oxygen bond of carbonyl ligands to form µ2,η3-CO2 complexes

Abstract

A new family of bimetallic µ₂,η³-CO₂ complexes have been prepared by net [2 + 2] cycloaddition of the metal–oxo bond of Cp₂MO (M = Mo, W) across the carbon–oxygen bond of the CO ligands of [Cp′M(CO)₂(NO)][BF₄](M = Mn,Re) and [CpM(CO)₃]BF₄(M = Fe,Ru)(Cp = C₅H₅; Cp′= C₅H₄Me or C₅Me₅); the crystal structure of [(C₅Me₅)Re(CO)(NO)(µ-CO₂)W(C₅H₅)₂][BF₄] has been determined.