title: Hexaaqua-magnesium 5-[1-(carboxyl-ato-meth-yl)pyridin-1-ium-4-yl]tetra-zol-2-ide chloride dihydrate.
abstract: In the title compound, [Mg(H(2)O)(6)](C(8)H(6)N(5)O(2))Cl·2H(2)O, the Mg(II) ion is surrounded by six water mol-ecules, exhibiting a slightly distorted octa-hedral coordination. The pyridine and tetra-zole rings are nearly coplanar, forming a dihedral angle of 4.63 (3)°. The complex cations, zwitterionic organic anions, Cl(-) anions and uncoordinated water mol-ecules are connected by O-H⋯O, O-H⋯N and O-H⋯Cl hydrogen bonds, leading to the formation of a three-dimensional network.
authors.affiliation: Department of Physics, Southeast University, Nanjing 210096,  People's Republic of China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang