Abstract C 9 H 15 F 6 N 2 O P, monoclinic, P 1 / n (no. 14), a = 8.3781(15) Å, b 13.970(3) c 12.904(2) β 104.500(2)°, V 1462.3(5) Å 3 , Z 4, R gt (F) 0.0677, wR ref ( ) 0.1977, T 296(2) K.

In the crystal structure of the title compound, C(4)H(8)N(3)O(+)·Cl(-), N-H⋯Cl hydrogen bonds link the components into chains along [010]. In addition, weak C-H⋯Cl hydrogen bonds link the chains into a two-dimensional network perpendicular to (001).

The title compound, C(10)H(11)N(2)O(2)P·H(2)O, contains a tetra-coordinate penta-valent P atom. The phosphinate group plays a predominant role in the cohesion of the crystal structure by forming chains along the b axis via inter-molecular C-H⋯O hydrogen bonds. These chains are connected by O-H⋯O and N-H⋯O hydrogen bonding involving the lattice water.