Metal complexes of novel sulphur- and phosphorus-containing heterocycles. Preparation and structure of tricarbonyl-η4-(1-pentafluorophenyl-2,3,4,5,-tetrakistrifluoromethylthiophen)manganese and π-Cyclopentadienyl(1-hydroxy-2,3,4,5,-tetrakistrifluoromethylphosphole 1-oxide)cobalt

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Abstract
Heterocyclic derivatives Mn(CO)3(C4F6)2SR and C5H5Co(C4F6)2PF3 are formed by reaction between hexafluorobut-2-yne and [Mn(CO)4SR]2, (R = CF3, C6F5), and (π-C5H5)Co(PF3)2; these derivatives contain non-planar heterocyclic rings with non-bonding metal heteroatom separations.
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