In the title hydrated salt, C5H6ClN2 +·C4H3N2O3 -·2H2O, the asymmetric unit contains two cations, two anions and four water mol-ecules of crystallization. In the extended structure, the barbiturate (2,4,6-trioxo-1,3-diazinan-5-ide) anions form a wave-like su... ...
