Acta Crystallographica Section C

Crystal Structure Communications

Volume 57, Part 11 (November 2001)

Acta Cryst. (2001). C57, 1245-1247    [doi:10.1107/S0108270101012689]

The nido-osmaboranes [2,2,2-(CO)(PPh₃)₂-nido-2-OsB₅H₉] and [6,6,6-(CO)(PPh₃)₂-nido-6-OsB₉H₁₃]

J. Bould, J. D. Kennedy, R. Ll. Thomas, N. P. Rath and L. Barton

Abstract: The structural characterization of the osmahexaborane 2-carbonyl-2,2-bis(triphenylphosphine)-nido-2-osmahexaborane(9), [Os(B₅H₉)(C₁₈H₁₅P)₂(CO)], (I), a metallaborane analogue of B₆H₁₀, confirms the structure proposed from NMR spectroscopy. The structure of the osmadecaborane 6-carbonyl-6,6-bis(triphenylphosphine)-nido-6-osmadecaborane(13), [Os(B₉H₁₃)(C₁₈H₁₅P)₂(CO)], (IV), is similarly confirmed. The short basal B-B distance of 1.652  (8)  Å in (I), not bridged by an H atom, mirrors that in the parent hexaborane(10) [1.626  (4)  Å].

Formula: [Os(B₅H₉)(C₁₈H₁₅P)₂(CO)] and [Os(B₉H₁₃)(C₁₈H₁₅P)₂(CO)]

Online 13 November 2001

	Structure factor file (CIF format) (487.2 kbytes) Contains datablock I
	Structure factor file (CIF format) (317.3 kbytes) Contains datablock IV

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