title: 3,3'-(p-Phenyl-enedimethyl-ene)di-imidazol-1-ium bis-(3-carb-oxy-4-hydroxy-benzene-sulfonate) dihydrate.
abstract: In the title compound, C(14)H(16)N(4) (2+)·2C(7)H(5)O(6)S(-)·2H(2)O, the 3,3'-(p-phenyl-enedimethyl-ene)diimidazol-1-ium dication lies on a crystallographic inversion center. In the crystal structure, dications, anions and solvent water mol-ecules are linked via O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds, and C-H⋯π inter-actions, forming a three-dimensional network containing R(2) (2)(4), R(2) (4)(12), R(4) (4)(22), R(8) (10)(32) and R(12) (14)(66) ring motifs.
authors.affiliation: School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
authors.forename: Yong-Li
authors.initials: YL
authors.lastname: Peng
authors.forename: Li-Hui
authors.initials: LH
authors.lastname: Jia