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Neutron Diffraction Analysis of H3Co2[C5H2(t-Bu)3]2, a Molecule with a Triply Hydrogen-Bridged Metal–Metal Bond: Some Comments on Structural Patterns in M(μ-H)nM Systems (n=1, 2, 3, 4)

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Abstract

The structure of H3Co2[C5H2(t-Bu)3]2 has been analyzed by low-temperature single-crystal neutron diffraction techniques, and shown to consist of two CoCp‡ moieties with three hydride ligands bridging the central Co–Co bond. Despite a fairly extensive twinning problem, the structure could be solved and successfully refined to a final R factor of 9.2% for 2024 reflections. Average molecular parameters in the H3Co2 core of the molecule are as follows: Co–Co=2.275(21) Å, Co–H=1.637(16) Å, H⋯H=2.050(20) Å, Co–H–Co=88.0(9)°, H–Co–H=77.0(7)°. Also included in this paper is a discussion on the molecular dimensions of symmetric hydride-bridged dinuclear systems (M(μ-H)nM, n=1, 2, 3, 4) that have been studied to date by neutron diffraction.

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Authors and Affiliations

  1. Department of Chemistry, University of Southern California, Los Angeles, California, 90089

    Manfred Bortz

  2. Department of Chemistry, University of Southern California, Los Angeles, California, 90089

    Robert Bau

  3. Institut für Anorganische Chemie, Universität/GH-Essen, Universitätstrasse 5–7, 45117, Essen, Germany

    Jörg J. Schneider

  4. Avenue des Martyrs, Institut Laue-Langevin, Grenoble, F-38042, France

    Sax A. Mason

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  1. Manfred Bortz
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  2. Robert Bau
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  3. Jörg J. Schneider
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  4. Sax A. Mason
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Bortz, M., Bau, R., Schneider, J.J. et al. Neutron Diffraction Analysis of H3Co2[C5H2(t-Bu)3]2, a Molecule with a Triply Hydrogen-Bridged Metal–Metal Bond: Some Comments on Structural Patterns in M(μ-H)nM Systems (n=1, 2, 3, 4). Journal of Cluster Science 12, 285–291 (2001). https://doi.org/10.1023/A:1016643617254

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