Hydrotris(methimazolyl)borato alkylidyne complexes of tungsten

Mark R. Mark, Anthony F. Hill*, Andrew J.P. White, David J. Williams

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    76 Citations (Scopus)


    The syntheses of the alkylidyne complexes [W(≡CR)(CO)2{HB(mt)3}] (R = NiPr2 1a, C4H3S-2 1b, C≡CCMe3 1c, C6H4Me-4 1d, C6H3Me2-2,6 1e, C5H4Mn(CO)3 1f; mt = 2-mercapto-3-methylimidazolyl) are reported. The crystal structures of three examples (1a, 1b, and 1c) reveal a progressive distortion of the alkylidyne ligand from octahedral coordination at tungsten, and in addition have a chiral C3-symmetric conformation for the B(mt)3W cage, which is also implicit from solution NMR data. A set of parameters is suggested for describing the geometry of HB(mt)3M cages.

    Original languageEnglish
    Pages (from-to)3831-3840
    Number of pages10
    Issue number19
    Publication statusPublished - 15 Sept 2003


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