title: 4-Ammonio-2,2,6,6-tetra-methyl-piperidinium bis-(dihydrogen phosphate) monohydrate.
abstract: In the crystal structure of the title compound, C(9)H(22)N(2) (2+)·2H(2)PO(4) (-)·H(2)O, the H(2)PO(4) (-) anions are hydrogen bonded to each other, forming a ribbon parallel to the b axis. The water mol-ecules connect these ribbons via O-H⋯O hydrogen bonds. The organic cations are attached to the dihydrogen phosphate anions and water mol-ecules through N-H⋯O and C-H⋯O hydrogen bonds, forming an infinite three-dimensional network.
authors.affiliation: Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia.
authors.forename: Mohamed Lahbib
authors.initials: ML
authors.lastname: Mrad
authors.forename: Sameh
authors.initials: S
authors.lastname: Akriche
authors.forename: Mohamed
authors.initials: M
authors.lastname: Rzaigui
authors.forename: Cherif
authors.initials: C
authors.lastname: Ben Nasr