The molecular structure of the title compound has been determined by analysis of single-crystal X-ray diffraction data recorded on a diffractometer. Two independent molecules crystallise in the asymmetric unit of an orthorhombic cell of dimensions a = 18.868(8), b = 17.143(7), and c = 31.07(2) Å; space group Pbca. Least-squares refinement, by use of 4 542 independent observed reflections, has converged to R 0.069 (all atoms save methyl hydrogens included). Geometrically the nine-atom metallacage is based on a tricapped trigonal prism in which the metal lies in a prism face, adjacent to boron and carbon caps. The other low-connectivity position hosts the second cage carbon atom which binds a B4 unit possessing a non-bonding B(7)⋯B(9) mean separation of 2.435 Å. This produces an open Pt(2)B(7)C(8)B(9) face and classifies the species as a nido-polyhedron.
|Number of pages||4|
|Journal||Journal of the Chemical Society, Dalton Transactions|
|Publication status||Published - 1977|
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