Some Chemistry of Diynyl - Tungsten Complexes

M.I. Bruce, P.J. Low, M. Ke, B.D. Kelly, B.W. Skelton, M.E. Smith, Allan White, N.B. Witton

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25 Citations (Scopus)


Reactions between W(C=CC=CH)(CO)(3)Cp (1) and {Mo(CO)(2)Cp}(2), Pt(eta -C2H4)(PPh3)(2) and 1,4-I2C6H4 [the latter catalysed by Pd-0/Cu-I] have given Mo-2{mu -HC2C=C[W(CO)(3)Cp]}(CO)(4)Cp-2 (2), Pt{eta (2)-HC2C=C[W(CO)(3)Cp]}(PPh3)(2) (3) and 1,4-{[W(CO)(3)Cp]C=CC=C}(2) C6H4 (5), respectively. The adduct Co-2{mu -PhC2C=C[W(CO)(3)Cp]}( mu -dppm)(CO)(4) (6) was obtained from W(C=CC=CPh)(CO)(3)Cp (4) and Co-2(mu -dppm)(CO)(6). Substitution of one CO ligand in W(C=CC=CSiMe3)(CO)(3)Cp (7), prepared from the CuI-catalysed reaction of WCl(CO)(3)Cp with HC=CC=CSiMe3 in tetrahydrofuran/NHEt2, by bis(diphenylphosphino) methane/Me3NO gave W(C=CC=CSiMe3)(CO)(2)(dppm-P)Cp (8). Treatment of (7) with RuCl(PPh3)(2)Cp afforded {Cp(OC)(3)W}C=CC=C-{Ru(PPh3)(2)Cp} (9), which reacts at the W-C=C- triple bond with tetracyanoethylene (tcne) to give {Cp(OC)(3)W}{C[=C(CN)(2)]C[=C(CN)(2)]C=C}{Ru(PPh3)(2)Cp} (10), and with Fe-2(CO)(9) to form the cluster Fe2W{mu (3)-C2C=C[Ru(PPh3)Cp]}(CO)(8)Cp (11). The molecular structures of (1), (2), (6), (8), (10) and (11) have been determined by single-crystal X-ray diffraction.
Original languageEnglish
Pages (from-to)453-460
JournalAustralian Journal of Chemistry
Publication statusPublished - 2001


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