Acta Cryst. (2004). E60, o1182-o1184  [ doi:10.1107/S160053680401311X ]

A second polymorph of 4,5-diphenyl-1H-imidazole

R. T. Stibrany, H. J. Schugar and J. A. Potenza

Abstract: The title compound, C₁₅H₁₂N₂, (II)₍₄₉₉₎, contains two molecules in the asymmetric unit and is a polymorphic form of a previously reported structure, (I)₍₄₉₅₎, of the same molecule. The molecules in both polymorphs exhibit nearly identical bond distances, but show significantly different phenyl/imidazole dihedral angles and pack differently in the crystalline state. In each polymorph, strong hydrogen-bonded polymer chains, involving the N atoms of the imidazole fragments in adjacent molecules, are formed.

Online 19 June 2004

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