title: Bis(2-amino-benzothia-zol-3-ium) bis-(7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato-κ(3)O(2),O(3),O(7))nickelate(II) hexa-hydrate.
abstract: In the title compound, (C(7)H(7)N(2)S)(2)[Ni(C(8)H(8)O(5))(2)]·6H(2)O, the Ni(II) cation is located on an inversion center and is O,O',O''-chelated by two symmetry-related 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxyl-ate anions in a distorted octa-hedral geometry. The 2-amino-benzothia-zol-3-ium cation links with the Ni complex anion via N-H⋯O hydrogen bonding. Extensive O-H⋯O and N-H⋯O hydrogen bonds involving the lattice water mol-ecules also occur in the crystal structure.
authors.forename: Gui-Xian
authors.initials: GX
authors.lastname: Wang
authors.forename: Qi-Wei
authors.initials: QW
authors.lastname: Zhang
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang