Abstract
Reactions between CpFe(CO)2SPh and M(CO)5THF (M = Cr, Mo, and W) in a mixture of benzene and THF at room temperature afforded compounds of the type CpFe(CO)2(ÎŒ-SPh)M(CO)5 (1) [M = Cr (1a), Mo (1b), and W (1c)] in high yield. However, migration of the thiolato ligand occurred during reactions between CpM(CO)xSPh (M = Fe, x = 2; M = Mo and W, x = 3) and Fe2(CO)9 forming compounds [Fe(ÎŒ-SPh)(CO)3]2 and [CpM(CO)x]2 (M = Fe, x = 2; M = Mo and W, x = 3). Single-crystal X-ray diffraction analyses reveal that 1c is a single thiolato-bridged hererobimetallic compound without a metalâmetal bond. Metalâmetal bond formation in compounds 1 by decarbonylation under thermal or photolytic condition was not observed. Reactions between compounds 1 and PPh3 produced CpFe(CO)2SPh and PPh3M(CO)5 (M = Cr, Mo, and W) by MâS bond cleavage in 1.
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