Acta Cryst. (2005). E61, o544-o546  [ doi:10.1107/S1600536805002874 ]

2-Methyl-7-oxo-5,6,7,8-tetrahydropyrimido[4,5-d]pyrimidin-3-ium chloride, a product of the thermal decomposition of nimustine hydrochloride (ACNU)

I. V. Chernyshev and A. I. Tursina

Abstract: The title compound, C₇H₉N₄O⁺·Cl^-, was obtained as a product of the thermal decomposition of nimustine hydrochloride (ACNU). In the crystal structure, intermolecular N-HO hydrogen bonds link the cations into centrosymmetric dimers, which are further connected by N-HCl and C-HCl hydrogen bonding to form two-dimensional networks.

Online 5 February 2005

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