title: Aqua-{tris-[(1H-benzimidazol-2-yl-κN)meth-yl]amine}-zinc 5-(dimethyl-amino)-naphthalene-1-sulfonate perchlorate 2.5-hydrate.
abstract: In the title compound, [Zn(C(24)H(21)N(7))(H(2)O)](C(12)H(12)NO(3)S)(ClO(4))·2.5H(2)O, the Zn(II) ion is in a distorted trigonal-bipyramidal coordination geometry. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds connect the components into a two-dimensional network parallel to (001). In addition, there are weak C-H⋯O hydrogen bonds.
authors.affiliation: School of Chemical Engineering and Food Science, Xiangfan University, Xiangfan 441053,  People's Republic of China.
authors.forename: Zuo-An
authors.initials: ZA
authors.lastname: Xiao
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Jiang