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The OsX n Coordination Polyhedra (X = O, S, Se, Te) in Crystal Structures

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Abstract

The Voronoi–Dirichlet polyhedra (VDP) and the method of intersecting spheres were used to perform a crystal-chemical analysis of compounds whose structures contain Os atoms surrounded by chalcogen atoms. Depending on the valence state, Os atoms bind four to seven X atoms (X = O, S, Se, Te) forming OsX n coordination polyhedra which can be tetrahedra (n = 4), trigonal bipyramids or square pyramids (n = 5), octahedra (n = 6), or pentagonal bipyramids (n = 7). In some compounds, pairs of OsO6 octahedra share edges to form Os–Os bonds. The influence of the Os valence state and the nature of the chalcogen atom on the composition and structure of the [Os a X b ] groups is discussed. On the basis of analysis of the crystal-structural data from the standpoint of the 18-electron rule, dependences of the Os–O and Os–Os bond orders on the bond lengths are proposed.

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Authors and Affiliations

  1. Samara State University, Samara, Russia

    L. B. Serezhkina & V. N. Serezhkin

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  1. L. B. Serezhkina
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  2. V. N. Serezhkin
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Serezhkina, L.B., Serezhkin, V.N. The OsX n Coordination Polyhedra (X = O, S, Se, Te) in Crystal Structures. Russian Journal of Coordination Chemistry 28, 527–533 (2002). https://doi.org/10.1023/A:1019799426861

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