Thiaminium dipicrate

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.