FORMATION OF NOVEL BIDENTATE AND CROWN THIOETHER LIGANDS VIA DICOBALT ALKYNE COMPLEXES

Open chain and cyclic thioalkyne complexes capable of ligating metal-carbonyl moieties are prepared by the reaction of [Co2(mu-HOCH2C = CCH2OH)(CO)6] with mono- and di-thiols in the presence of HBF4 and the structures of [Co2(CO)4(mu-dppm){mu-C2(CH2SMe)2}Mo(CO)4] and [Co2{mu-C2(CH2SCH2CH2)2S}(CO)6] have been established by X-ray crystallography; dppm = bis(diphenylphosphino)methane.