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Coordination Polyhedra OsXn(X = F, Cl, Br, I) in Crystal Structures

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Abstract

The Voronoi–Dirichlet polyhedra (VDP) and the method of intersecting spheres were used to perform crystal-chemical analysis of compounds containing complexes [Os a X b ]z–(X = F, Cl, Br, I). Atoms of Os(V) at X = F and Cl, of Os(IV) at X = Cl, Br, and of Os(III) at X = Br were found to exhibit a coordination number of 6 with respect to the halogen atoms and to form OsX6octahedra. The coordination polyhedra of Os(III) for X = Cl, I are square pyramids OsX4. Each Os(III) atom forms one Os–Os bond; as a consequence, the OsBr6octahedra share a face in forming Os2Br3– 9complexes, while the OsX4pyramids (X = Cl, I) dimerize to produce [X4Os–OsX4]2–ions. The influence of the valence state of the Os atoms and of the nature of the halogen atoms on the composition and structure of the complexes formed and some characteristics of the coordination sphere of Os were considered.

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Authors and Affiliations

  1. Samara State University, Samara, Russia

    V. N. Serezhkin & L. B. Serezhkina

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  1. V. N. Serezhkin
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  2. L. B. Serezhkina
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Serezhkin, V.N., Serezhkina, L.B. Coordination Polyhedra OsXn(X = F, Cl, Br, I) in Crystal Structures. Russian Journal of Coordination Chemistry 27, 414–422 (2001). https://doi.org/10.1023/A:1011343926528

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