title: Poly[diaqua-(μ(3)-1H-benzimidazole-5,6-dicarboxyl-ato-κN:O,O:O)magnesium(II)].
abstract: In the title complex, [Mg(C(9)H(4)N(2)O(4))(H(2)O)(2)](n), the Mg(II) atom is six-coordinated by one N and three O atoms from three different 1H-benzimidazole-5,6-dicarboxyl-ate ligands and two O atoms from two water mol-ecules, forming a slightly distorted octa-hedral geometry. The ligand links the Mg(II) centres into a three-dimensional network. Extensive N-H⋯O and O-H⋯O hydrogen bonds exist between the ligands and water mol-ecules, stabilizing the crystal structure.
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.forename: Xiao-Fei
authors.initials: XF
authors.lastname: Li
authors.forename: Wen-Dong
authors.initials: WD
authors.lastname: Song
authors.forename: Xiao-Tian
authors.initials: XT
authors.lastname: Ma
authors.forename: Juan-Hua
authors.initials: JH
authors.lastname: Liu