Acta Cryst. (2011). E67, o1607 [ doi:10.1107/S1600536811021337 ]
Abstract: The title compound, C4H6N3OS+·H2PO4-, (I), was obtained as a result of hydrolysis of [(1,3-thiazol-2-ylamino)carbonyl]phosphoramidic acid, (II), in water. X-ray analysis has shown that the N-P bond in (II) breaks, leading to the formation of the substituted carbamide (I). This compound exists as an internal salt. The unit cell consists of a urea cation and an anion of H2PO4-. Protonation of the N atom of the heterocyclic ring was confirmed by the location of the H atom in a difference Fourier map. The molecules of substituted urea are connected by OO hydrogen bonds into unlimited planes. In turn, those planes are connected to each other via N-HO hydrogen bonds with molecules of phosphoric acid, forming a three-dimensional polymer.
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