The Preparation of Iron Carbonyl Complexes of Fluorocarbon-Bridged Ligands

The reactions of the ligands [Formula: see text] L′ = (CH3)2As, (C6H5)2P; n = 4, 6, 8; but not all combinations) with iron carbonyls are described in detail. The nature of the products is discussed as a function of the reaction conditions and the ligands. The mixed ligands yield eight different types of complexes which have been characterized. Two of these types (L—L′)2Fe2(CO)4. and (L—L′)2Fe(CO)3 were previously unknown.