Abstract

Mononuclear complexes [M(cod)(RS(CH 2) n SR)]BF 4 (M=Rh, Ir; n=2–4)) were synthesized and characterized. The crystal structure of [Rh(cod){(CH 3) 2CHS(CH 2) 4SCH(CH 3) 2}]BF 4 was determined by X-ray diffraction. The iridium complexes are catalytically active precursors in the hydrogenation of olefins. The effect of the length of the backbone between the two sulfur atoms and the group R bonded to sulfur was studied in the hydrogenation of itaconic acid and 1-hexene.

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