Abstract

The preparation of a series of complexes [M(CO)5L][M = Cr or W; L = Me3PS, Me2PhPS, MePh2PS, Ph3PS, Me2PhPSe, Me3AsS, or Ph2P(S)CH2P(S)Ph2; M = Mo, L = Me2PhPS; M = W, L = Ph3AsO] is reported. I.r. and 1H n.m.r. spectra are discussed. The chalcogenide ligands are readily displaced by CO and Ph3P, and with Mel ionic species, e.g.[Me2PhPSMe][M(CO)5l], are formed. For L = Ph2P(S)CH2P(S)Ph2 spectroscopic evidence indicates the ligand is acting in a monodentate fashion.

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