Bis[1-(isopropylideneamino)guanidinium] bis(3-nitrobenzoate) monohydrate

Abstract

The asymmetric unit of the title salt hydrate, 2C4H11N4+·2C7H4NO4−·H2O, comprises two independent 1-(isopropylideneamino)guanidinium cations, two independent 3-nitrobenzoate anions and a water molecule of crystallization. There are minimal geometric differences between the two planar [maximum deviations 0.061 (2) and 0.088 (2) Å] cations, and between the two almost planar anions [C–C–C–O and C–C–N–O torsion angles of 0.3 (3) and 11.1 (4) °, respectively in the first anion and −173.7 (2) and −0.1 (4), respectively in the second anion]. Extensive O—H...O and N—H...O hydrogen bonding between all components of the structure leads to the formation of a two-dimensional array with an undulating topology in the bc plane.