Reactivite d'alcynes fluores vis-a-vis de methylthiolates [(η5-C5H5)M(SMe)(CO)3] et d'hydrures [(η5-C5H5)MH(CO)3] de molybdene et de tungstene |
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| Authors: | FY Petillon F Le Floch-Perennou JE Guerchais DWA Sharp Lj Monojlovic-Muir KW Muir |
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| Institution: | Laboratoire de chimie inorganique moléculaire (ERA CNRS 822), Faculté des Sciences et Techniques, 6 avenue Le Gorgeu, 29283 Brest-Cedex France;Department of Chemistry, University of Glasgow, Glasgow G128QQ Great Britain |
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| Abstract: | The electron deficient acetylene, hexafluorobut-2-yne, reacts with molybdenum and tungsten methanethiolate derivatives (prepared in situ) to give vinyl and three-, five-, or six-membered heterocyclic derivatives: Cp(OC)- Me], Cp(OC)2Me], CpW(CO)3C(CF3C(CF3)SMe], CpW{η3-(O)}-(CO)2]. These reactions contrast with those of trifluoropropyne where no organometallic species are obtained. On heating or irradiation with CF3CCCF3 CpMH(CO)3] gives known bridged species and in the presence of dimethyl disulphide the vinyl derivative CpM(CO)3C(CF3)C(CF3)H]and an isomer of undetermined structure. |
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