New bimetallic, phosphido-bridged iron complexes derived from [Fe2(µ-CO)(µ-PPh2)(CO)5(PPh2)]2–

Abstract

The title dianion, obtained by deprotonation of [Fe₂(µ-CO)(µ-PPh₂)(CO)₅(PPh₂H)]^– at low temperature, affords various phosphido-bridged di-iron complexes upon reaction with iodohydrocarbons; new complexes include [Fe₂(µ-CO)(µ-PPh₂)(CO)₅(PPh₂R)]^–(R = Me, Et, Prⁿ, Prⁱ, allyl), Fe₂(µ-PPh₂)[µ-C(R)O](CO)₅(PPh₂R)(R = Prⁿ,Prⁱ), Fe₂(µ-PPh₂)(CO)₅(η³-C₃H₅)(PPh₂C₃H₅), the structure of which was determined by X-ray diffraction, and Fe₂(µ-PPh₂)(µ-ch₂PPh₂)(CO)₆.