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Reactions of the multiply-bonded dirhenium(II) complexes Re2X4(μ-dppm)2(CNR) (X = Cl or Br; R = t-Bu or xylyl) with alkynes. Structural characterization of [Re2Cl3(μ-dppm)2(CN-t-Bu)(η 2-HCCH)]O3SCF3 and a comparison with the related carbonyl species(1)

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Summary

The reactions of the triply-bonded monoisocyanide complexes Re2X4(μ-dppm)2(CNR) (X = Cl or Br; dppm = Ph2PCH2PPh2; R = t-Bu or xylyl) with the alkyne ligands HCCH and n-PrCCH in the presence of TlO3SCF3 afford the complexes [Re2X3(μ-dppm)2-(CNR)(η 2-HCCR)]O3SCF3 (R = H or n-C3H3). The structure of this set of complexes has been established by an X-ray structure determination on a single crystal of composition [Re2Cl3(μ-dppm)2(CN-t-Bu)(η 2-HCCH)]-O3SCF3·CH3C(O)OC2H5 (2a). The structure of the dirhenium(II) cation, [(t-BuNC)Cl2Re(μ-dppm)2ReCl-(μ 2-HCCH)]+, involves different coordination numbers for the two Re centres and an anti arrangement of the t-BuNC and μ 2-HCCH ligands. The 625-01 bond length of 2.3171(5) Å accords with the retention of a 625-02 bond.

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Authors and Affiliations

  1. Department of Chemistry, Purdue University, 1393 Brown Building, 47907-1393, West Lafayette, Indiana, USA

    David A. Kort, Wengan Wu, Phillip E. Fanwick & Richard A. Walton

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  1. David A. Kort
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  2. Wengan Wu
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  3. Phillip E. Fanwick
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  4. Richard A. Walton
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Additional information

(1) This paper is Part VIII in the series Reactions of the dir-henium(II) complexes Re 2X4(dppm)2 (X = Cl or Br, dppm = Ph with isocyanides) 2PCH2PPh2. For Part VII, see W. Wu, P. E. Fanwick and R. A. Walton, Inorg. Chem., in press.

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Kort, D.A., Wu, W., Fanwick, P.E. et al. Reactions of the multiply-bonded dirhenium(II) complexes Re2X4(μ-dppm)2(CNR) (X = Cl or Br; R = t-Bu or xylyl) with alkynes. Structural characterization of [Re2Cl3(μ-dppm)2(CN-t-Bu)(η 2-HCCH)]O3SCF3 and a comparison with the related carbonyl species(1) . Transition Met Chem 20, 625–629 (1995). https://doi.org/10.1007/BF00136430

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  • DOI: https://doi.org/10.1007/BF00136430

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