Reactions of bimetallic group VI complexes

Triphenylphosphine and trimethylphosphite react with [(C5H5)(OC)2M(μ-SMe)M′(CO)5] (M, M′ = Mo, W) (II) to give [(C5H5)(OC)2)LM(μ-SMe)M′(CO)5] which on heating revert to II. On prolonged heating [(C5H5)(OC)2Mo(μ-SMe)W(CO)4}P(OMe)3}] is formed. [(C5H5)(OC)3W(μ-SMe)W(CO)5] reacts with I2 to give [(C5H5)(OC)2W(μ-SMe)(μ-I)W(CO)3I] for which the crystal structure has been determined.