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Issue 19, 1994
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Synthesis of heterometallic species with (Ph2P)3CH or (Ph2P)3C. Crystal structures of [Mo(CO)4{(PPh2)2CHPPh2AuCl}], [Mo(CO)4{(PPh2)2 CHPPh2Au(C6F5)}] and [NBu]4[Mo(CO)4{(PPh2)2CPPh2Au(C6F5)}]

Abstract

Treatment of [M(CO)4{(PPh2)2CHPPh2}](M = Cr a, Mo b or W c) with 1 equivalent of [AuX(tht)] or [Au(tht)(PPh3)]ClO4(tht = tetrahydrothiophene) afforded the neutral binuclear complexes [M(CO)4{(PPh2)2CHPPh2AuX}](X = Cl 1a1c or C6F52a-2c), or the cationic derivatives [M(CO)4{(PPh2)2CHPPh2Au(PPh3)}]ClO43a-3c. Complexes 2 and 3 are readily deprotonated by [NBu4][acac](acac = acetylacetonate) to give the tris(diphenylphosphino)methanide species [NBu4]-[M(CO)4{(PPh2)2CPPh2Au(C6F5)}]4a4c and [M(CO)4{(PPh2)2CPPh2Au(PPh3)}](5a5c). Tri-nuclear compounds of the type [NBu4][{M(CO)4[(PPh2)2CPPh2]}2Au]6a6c were obtained by reaction of [M(CO)4{(PPh2)2CHPPh2] with [NBu4][Au(acac)2] in the ratio 2:1. Single-crystal structure determinations were performed for compounds 1b, 2b and 4b. In the neutral complexes 1b and 2b the atoms C(2)(carbonyl), Mo, P(1)(co-ordinated to Au) and Au are essentially coplanar; the principal structural differences between the neutral and anionic (4b) complexes are the shorter P–C bonds and a rotation about the C–P(1) bond in the latter complex.

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Article type: Paper
DOI: 10.1039/DT9940002891
J. Chem. Soc., Dalton Trans., 1994, 2891-2898

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    Synthesis of heterometallic species with (Ph2P)3CH or (Ph2P)3C. Crystal structures of [Mo(CO)4{(PPh2)2CHPPh2AuCl}], [Mo(CO)4{(PPh2)2 CHPPh2Au(C6F5)}] and [NBu]4[Mo(CO)4{(PPh2)2CPPh2Au(C6F5)}]

    E. J. Fernández, M. C. Gimeno, P. G. Jones, A. Laguna, M. Laguna and E. Olmos, J. Chem. Soc., Dalton Trans., 1994, 2891
    DOI: 10.1039/DT9940002891

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