Structural studies of binuclear suiphido-bridged complexes of tungsten. Preparation and X-ray crystal structures of [S2W(μ-S)2W(NNMe2)2(PPh 3)] and [{W(SBut)2(PMe2Ph)}2(μ-S) 2]·CH2Cl2

Jonathan R. Dilworth, Raymond L. Richards, Phillip Dahlstrom, John Hutchinson, Surendra Kumar, Jon Zubieta

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

The reaction of [NBun4]2[WS4] with [WCl(NNMe2)2(PPh3)2]Cl yields the asymmetric binuclear complex [S2W(μ-S)2W(NNMe2)2(PPh 3)] (1). Complex (1) crystallizes in space group Cc, with a = 15.389(2), b = 10.292(4), c = 18.406(2) Å, β = 90.43(1)°, and Z = 4; final R = 0.061 based on 4 091 reflections collected, 2 116 used. One tungsten is trigonally pyramidally co-ordinated with two NNMe2 groups in the equatorial plane and one axial and one equatorial bridging sulphide with a W-W separation of 3.024(1) Å. The reaction of cis-[W(N2)2(PMe2Ph)4] with ButSH gives the symmetric binuclear complex [{W(SBut)2(PMe2Ph)}2(μ-S) 2] (2). Complex (2) crystallises in space group P1̄, with a = 9.654(4), b = 10.331(4), c = 13.288(5) Å, α = 78.09(1), β = 69.36(1), γ = 82.49(1)°, and Z = 1; final R = 0.071 based on 4 732 reflections collected, 2 310 used. The centre of symmetry imposes planarity on the W2S2 system with a W-W distance of 2.736(2) Å. Each tungsten has distorted trigonal-bipyramidal geometry with bridging sulphide and phosphorus in the apical sites.

Original languageEnglish (US)
Pages (from-to)1489-1493
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number8
DOIs
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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