Acta Cryst. (2006). E62, o202-o204  [ doi:10.1107/S1600536805039358 ]

Thiaminium chloride perchlorate

S. Athimoolam and R. K. Rajaram

Abstract: In the title compound, C₁₂H₁₈N₄OS²⁺·Cl^-·ClO₄^-, the thiaminium cations form `head-to-tail' N-HO hydrogen-bonded dimers about inversion centres. N-HCl and O-HCl hydrogen bonds further stabilize the structure, forming a one-dimensional chain running along the diagonal of the ac plane. Both anions are located adjacent to `anion holes' in the thiaminium cation. The perchlorate anions show rotational disorder about a Cl-O bond.

Online 14 December 2005

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