A structural investigation of the heterobimetallic carbocation complex [Cp∗(CO)2Fe{μ-CH2CH(CH2)3}W(CO)3Cp]BPh4

The reaction of [Cp∗(CO)2Fe{μ-CH2CH(CH2)3}W(CO)3Cp]PF6 with NaBPh4 in dry acetone gave [Cp∗(CO)2Fe{μ-CH2CH(CH2)3}W(CO)3Cp]BPh4. The bond Fe–Cβ is shorter than that reported for the shorter chain carbocationic complexes. The data suggest that metallacyclopropane character is on the iron side of the molecule both in the solid state and in solution.