Acta Cryst. (2007). E63, m1385-m1387  [ doi:10.1107/S160053680701687X ]

[1-(2-Hydroxyethyl)-5-methylpyrazol-3-yl]ferrocenium chloride and [1-(2-hydroxyethyl)-5-methylpyrazol-3-yl]ferrocene cocrystal

Y.-C. Shi, B.-B. Zhu and S. W. Ng

Abstract: The title compound, [Fe(C₅H₅)(C₁₁H₁₃N₂O)]·[Fe(C₅H₅)(C₁₁H₁₃N₂O)]Cl, cocrystallizes as (1-2-hydroxyethyl-5-methylpyrazol-3-yl)ferrocenium chloride-(1-2-hydroxyethyl-5-methylpyrazol-3-yl)ferrocene (1/1). Two independent pyrazolylferrocenes in the asymmetric unit, with similar geometric parameters, form an R₄⁴(24) tetramer via O-HN hydrogen bonds and Cl^- ions occupy the spaces between the tetramer rings. This tetramer is linked via C-H hydrogen bonds, involving the cyclopentadienyl rings as acceptors, into a [100] chain.

Online 20 April 2007

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