Synthesis, reactivity and structural characterization of some heterometallic complexes containing naked arsenic ligands

Katherine V. Adams, Nick Choi, Gráinne Conole, John E. Davies, Jason D. King, Martin J. Mays, Mary McPartlin, Paul R. Raithby

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12 Citations (Scopus)

Abstract

The reactions of [Co2(μ-As2)(CO)6] with [Mo2Cp2(CO)4] (Cp = η5-C5H5) and with [(OC)4CoMCp(CO)3] [M = Mo or W] gave, respectively, the known product [Mo2(μ-As2)Cp2(CO)4] 1 and the new heterobimetallic complexes [(OC)3Co(μ-As2)MCp(CO)2] [M = Mo 2 or W 3]. The mixed-metal complexes have been treated with PPh3 to give the substituted complexes [(Ph3P)(OC)2Co(μ-As2)MCp(CO)2] [M = Mo 4 or W 5]. Complex 2 reacted with [Cr(CO)5]·THF to give [(OC)3Co{μ-As2[Cr(CO)5] 2}MoCp(CO)2] 6. Reaction of [MoWCp2(CO)4] with [Co2(μ-As2)(CO)6] does not lead to the complex [MoW(μ-As2)Cp2(CO)4] although this can be obtained by co-thermolysis of [Mo2Cp2(CO)6] and [W2Cp2(CO)6] with grey arsenic which affords three bimetallic products, [MM′(μ-As2)-Cp2(CO)4] (M = M′ = Mo 1; M = Mo, M′ = W 7; M = M′ = W), and four trimetallic products, [M2M′(μ3-As)-Cp3(CO)6] (M = M′ = Mo; M = Mo, M′ = W 8; M = W, M′ = Mo 9; M = M′ = W). The new heterometallic complexes 2, 3, 5, 6 and 9 have been characterized by X-ray diffraction analyses.

Original languageEnglish
Pages (from-to)3679-3686
Number of pages8
JournalJournal of the Chemical Society - Dalton Transactions
Issue number21
DOIs
Publication statusPublished - 7 Nov 1999

ASJC Scopus subject areas

  • Chemistry(all)

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