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2. The reactions of di-μ-methylene-bis(pentamethylcyclopentadienyl)-dirhodium(IV) complexes with benzylmagnesium chloride and with alkynylmagnesium chloride; X-ray structure of [(η5-C5Me5)Rh(CH2Ph)(μ-CH2)2Rh(η4-C5Me5CH2Ph)] Neil J. Meanwell,Arnold J. Smith,Peter M. Maitlis J. Chem. Soc. Dalton Trans. 1986 1419