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Group 6 metal carbonyl complexes of a bulky phosphine: The crystal structures of tris(trimethylsilyl)phosphine-M(0)pentacarbonyl, M = chromium, molybdenum, and tungsten

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The crystal structures of M(P{Si(CH3)3}3)(CO)5, M = Cr (1), Mo (2), and W (3), have been determined. Crystal data for 1, trigonal crystal system, space group = P31, a, b = 9.2118(6) Å, c = 22.416(3) Å, V = 1647.3(2) Å3, Z = 3; for 2, trigonal crystal system, space group = P32, a, b = 9.3394(3) Å, c = 22.7375(12) Å, V = 1717.56(12) Å3, Z = 3; trigonal crystal system, space group = P32, a, b = 9.3147(5) Å, c = 22.6955(16) Å, V = 1705.33(18) Å3, Z = 3. All three structures show distorted octahedral coordination environments around the metal center and exhibit especially long M–P bond distances, illustrating the unique steric and electronic properties of this bulky phosphine ligand. The 31P{1H} NMR spectra of the compounds are also reported.

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Acknowledgments

We thank Research Corporation (DS0332) and Fort Lewis College for funding that supported this research.

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Authors and Affiliations

  1. Chemistry Department, Fort Lewis College, Durango, Colorado, USA

    Tara A. McCampbell, Blaine A. Kinkel & Monte L. Helm

  2. Department of Chemistry, Colorado State University, Fort Collins, Colorado, USA

    Susie M. Miller

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  1. Tara A. McCampbell
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  2. Blaine A. Kinkel
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  3. Susie M. Miller
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  4. Monte L. Helm
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Correspondence to Monte L. Helm.

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McCampbell, T.A., Kinkel, B.A., Miller, S.M. et al. Group 6 metal carbonyl complexes of a bulky phosphine: The crystal structures of tris(trimethylsilyl)phosphine-M(0)pentacarbonyl, M = chromium, molybdenum, and tungsten. J Chem Crystallogr 36, 271–275 (2006). https://doi.org/10.1007/s10870-005-9022-z

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  • DOI: https://doi.org/10.1007/s10870-005-9022-z

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