ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, vol.70, pp.745-753, 2014 (ESCI)
The title compound, C13H16N4O3S2 center dot H2O, crystallizes in a 'folded' conformation with the ester group lying over the carbamoyl moiety, with one solvent water molecule. The molecular conformation is stabilized by an intramolecular C-H center dot center dot center dot O hydrogen bond, and an N-H center dot center dot center dot O hydrogen-bonding interaction involving the lattice water molecule. The packing involves N-H center dot center dot center dot N, N-H center dot center dot center dot O, O-H center dot center dot center dot N and O-H center dot center dot center dot O hydrogen bonds and consists of tilted layers running approximately parallel to the c axis, with the ester groups on the outer sides of the layers and with channels running parallel to (101).