Acta Cryst. (2006). E62, o2324-o2326  [ doi:10.1107/S160053680601720X ]

Thiaminium dipicrate

K. Anitha, S. Athimoolam and S. Natarajan

Abstract: In the title molecular structure, C₁₂H₁₈N₄OS²⁺·2C₆H₂N₃O₇^-, the thiazolium ring bearing the hydroxyethyl side chain is disordered over two sites about the methylene bridge. In the minor occupancy component, the dihedral angles are quite different from the range observed in related structures. In the crystal structure, the thiaminium cation and one of the picrate anions form a centrosymmetric hydrogen-bonded cluster. Both anions form `anionic holes' with the thiaminium cation.

Online 12 May 2006

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