title: Bis(μ-3-nitro-benzene-1,2-dicarboxyl-ato)-κ(4)O(1),O(2):O(1),O(1');κ(4)O(1),O(1'):O(1),O(2)-bis-[triaqua-(6-carb-oxy-2-nitro-benzoato-κ(2)O(1),O(6))neodymium(III)] dihydrate.
abstract: The title complex, [Nd(2)(C(8)H(3)NO(6))(2)(C(8)H(4)NO(6))(2)(H(2)O)(6)]·2H(2)O, consists of dimeric units related by an inversion center. The Nd(III) atom is nine-coordinated by three O atoms from water mol-ecules and six from carboxyl-ate atoms. The 1,2-dicarboxylate acid molecules are in a single and double deprotonation stage and exhibit two coord-in-ation modes, viz. μ(2)-(κ(4), O(1): O(2): O(2): O(3)) and μ(1)-(κ(2), O(2): O(3)), which are responsible for the dimeric structure framework. The dimeric structure is then assembled into a three-dimensional supramolecular framework via O-H⋯O hydrogen bonds.
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shanxi Province,  People's Republic of China.
authors.forename: Yin-Cheng
authors.initials: YC
authors.lastname: Chang
authors.forename: Zhi-Chao
authors.initials: ZC
authors.lastname: Pei
authors.forename: Qi
authors.initials: Q
authors.lastname: Shuai