title: 2-amino-5-nitro-4,6-dipiperidinopyrimidinium hydrogensulfate monohydrate: hydrogen-bonded sheets containing highly distorted cations.
abstract: In the title compound, C(14)H(23)N(6)O(2)(+) x HSO(4)(-) x H(2)O, the pyrimidinium ring of the cation adopts a twist-boat conformation, induced by steric clashes between adjacent ring substituents; the anions and the water molecules are linked by three O-H.O hydrogen bonds [H...O = 1.70-1.78 A, O...O = 2.548 (2)-2.761 (2) A and O-H...O = 161-168 degrees ] into chains of edge-fused R(4)(4)(12) rings, which are linked into sheets by the cations, via three N-H...O hydrogen bonds [H...O = 1.96-2.17 A, N...O = 2.820 (2)-2.935 (2) A and N-H...O = 145-173 degrees ].
authors.affiliation: Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, 23071 Jaén, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Quesada
authors.forename: Antonio
authors.initials: A
authors.lastname: Marchal
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell