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X-ray diffraction structure of Re2(CO)8[(Z)-Ph2PCH=CHPPh2]. Proof for diphosphine ligation across the Re–Re bond

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Abstract

Treatment of either Re2(CO)8(μ-H)(μ-η 1,η 2-CH=CHBu) or Re2(CO)8(MeCN)2 with the unsaturated diphosphine ligand (Z)-Ph2PCH=CHPPh2 gives the known bridging phosphine compound Re2(CO)8[(Z)-Ph2PCH=CHPPh2]. The solid-state structure of Re2(CO)8[(Z)-Ph2PCH=CHPPh2] was established by X-ray diffraction analysis, which confirmed the attachment of the diphosphine ligand to each rhenium center. Re2(CO)8[(Z)-Ph2PCH=CHPPh2] crystallizes in the tetragonal space group P4 2 bc, a = 18.054(2) Å, c = 22.289(4) Å, V = 7265(2) Å3, Z = 8, and d calc = 1.900. The two Re(CO)4 units that are tethered by the diphosphine ligand exhibit a staggered rotational geometry.

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Authors and Affiliations

  1. Department of Chemistry, University of Houston, Houston, Texas, 77204

    Simon G. Bott

  2. Department of Chemistry, University of North Texas, Denton, Texas, 76203

    Kaiyuan Yang & Michael G. Richmond

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  1. Simon G. Bott
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  2. Kaiyuan Yang
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  3. Michael G. Richmond
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Bott, S.G., Yang, K. & Richmond, M.G. X-ray diffraction structure of Re2(CO)8[(Z)-Ph2PCH=CHPPh2]. Proof for diphosphine ligation across the Re–Re bond. Journal of Chemical Crystallography 31, 485–489 (2001). https://doi.org/10.1023/A:1015663115531

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