Acta Cryst. (2009). E65, o245  [ doi:10.1107/S1600536808044243 ]

Redetermination of 1-carboxycyclohexan-1-aminium chloride

L. M. Belandria, G. E. Delgado, A. J. Mora, L. E. Seijas and T. González

Abstract: The crystal structure of the title compound, C₇H₁₄NO₂⁺·Cl^-, was reported previously [Chacko, Srinivasan & Zand (1975). J. Cryst. Mol. Struct. 5, 353-357] from Weissenberg photographic data with R = 0.113. It has now been redetermined, providing a significant increase in the precision of the derived geometric parameters, viz. mean (C-C) = 0.003 Å in the present work compared with 0.021 Å for the previous work. The complete cation is generated by crystallographic mirrror symmetry, with three C atoms, two O atoms and the N atom lying on the reflecting plane; the chloride anion also has m site symmetry. The crystal structure is established by a two-dimensional network of O-HCl and N-HCl hydrogen bonds, generating C¹₂(4) and C¹₂(7) chains, and R²₄(8) and R²₄(14) rings.

Online 8 January 2009

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