The chemistry of the selenium-containing cluster [Ru4-(μ4-Se)2(CO)8(μ-CO)3]: Crystal structures of [Ru33-Se)2(CO)7(Ph2PC2PPh2)], [Ru44-Se)2(CO)10(SbPh3)] and [Ru3...

Teresa M. Layer, Jack Lewis, Avelino Martín, Paul R. Raithby, Wing Tak Wong

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Abstract

Title full: he chemistry of the selenium-containing cluster [Ru4-(μ4-Se)2(CO)8(μ-CO)3]: Crystal structures of [Ru3(μ3-Se)2(CO)7(Ph2PC2PPh2)], [Ru4(μ4-Se)2(CO)10(SbPh3)] and [Ru3(μ3-Se)2(CO)9]. The selenium-containing cluster [Ru4(μ4-Se)2(CO)8(μ-CO)3] 1 may be readily prepared by vacuum pyrolysis of [Ru3(CO)12] with PhSeSePh at 185 °C. The subsequent reaction of 1 with the bidentate phosphine ligand bis(diphenylphosphino)acetylene (dppa) affords the orange triruthenium cluster [Ru3(μ3-Se)2(CO)7(dppa)] 2, in 80% yield. Complex 2 crystallises in the space group P1̄ with a = 12.059(3), b = 12.274(3), c = 13.172(5) Å, α = 66.78(2), β = 83.21(3), γ = 89.30(2)° and Z = 2. Treatment of complex 1 with triphenylantimony, SbPh3, yields the antimony-substituted cluster [Ru4(μ4-Se)2(CO)10(SbPh3)] 3, in quantitative yield. Complex 3 crystallises in the space group P1̄ with a = 9.474(4), b = 12.456(3), c = 14.913(5) Å, α = 91.89(2), β = 93.88(3), γ = 109.99(3)° and Z = 2. Reaction of cluster 1 with carbon monoxide at room temperature and 70 atm affords the triruthenium selenido-bridged cluster [Ru3(μ3-Se)2(CO)9] 4. Complex 4 crystallises in the space group P1̄ with a = 6.887(3), b = 9.606(7), c = 13.567(9) Å, α = 82.48(6), β = 84.91(4), γ = 68.85(5)° and Z = 2.
Original languageEnglish
Pages (from-to)3411-3417
Number of pages7
JournalJournal of the Chemical Society, Dalton Transactions
Issue number24
DOIs
Publication statusPublished - 1 Dec 1992
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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