Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 7 (July 2013)


organic compounds



lg3115 scheme

Acta Cryst. (2013). C69, 774-777    [ doi:10.1107/S0108270113014601 ]

Triphenylsilanol-4,4'-bipyridyl (4/1): the Z' = 4 polymorph revisited

G. L. Cascarano, G. Ferguson, C. Giacovazzo, C. Glidewell and A. L. Spek

Abstract: A fully ordered structure is reported for the polymorph of triphenylsilanol-4,4'-bipyridyl (4/1), 4C18H16OSi·C10H8N2, having Z' = 4. The asymmetric unit contains four similar but distinct five-molecule aggregates, in which the central bipyridyl unit is linked to two molecules of triphenylsilanol via O-H...N hydrogen bonds, with a further pair of triphenylsilanol molecules linked to the first pair via O-H...O hydrogen bonds. An extensive series of C-H...[pi](arene) hydrogen bonds links these aggregates into complex sheets. This structure is compared with a previously reported structure [Bowes, Ferguson, Lough & Glidewell (2003). Acta Cryst. B59, 277-286], which was based on an erroneous disordered structural model arising from a false direct-methods solution with reference to a strong pseudo-inversion centre.

Formula: 4C18H16OSi·C10H8N2


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[ doi:10.1107/S0108270113014601/lg3115Isup3.cml ]
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