Hydrogenation of (1-phenylthiophene)Mn(CO)3 (thiophene = 3-methylthiophene and 3,4-dimethylthiophene) complexes: Formation of tetrakis(tricarbonyl-phenylthiomanganese)

Article abstract of DOI:10.1016/S0022-328X(99)00029-7

For the hydrogenation of (1-phenylthiophene)Mn(CO)₃ (2), the nature of the thiophene derivatives strongly affect the yields and distribution of reaction products. When 3-methyl- and 3,4-dimethylthiophene were used as thiophene derivatives, the dimer [Mn(CO)₄(SPh)]₂ (7) and the tetramer [Mn(CO)₃(SPh)]₄ (8) was obtained as major products and the hydrodesulfurized product, isoprene or 2,3-dimethyl-1,3-butadiene were obtained in a high yield. Structures of 7 and 8 were verified by X-ray diffraction studies.