Hexahydrido-complexes of tungsten containing dimethylphenylphosphine or diethylphenylphosphine as ligands

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Abstract
Reduction of trans-[WCl4(PMe2Ph)2], trans-[WBr4(PMe2Ph)2] or [WCl4(PMe2Ph)3] with sodium borohydride gives [WH6(PMe2Ph)3], which is fluxional, Impure [WH6(PEt2Ph)3] was similarly prepared. I.r. and 1H n.m.r. data are given and discussed.