title: Diaqua-bis-(4-carb-oxy-2-propyl-1H-imidazole-5-carboxyl-ato-κN,O)zinc(II) N,N-dimethyl-formamide disolvate.
abstract: In the crystal structure of the title compound, [Zn(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the Zn(II) atom is coordinated by two N,O-bidentate 2-propyl-1H-imidazole-4,5-dicarboxyl-ate anions and two water mol-ecules in a distorted octa-hedral environment. The asymmetric unit consists of one Zn(II) atom located on a center of inversion as well as one anion, one water mol-ecule and one additional dimethyl-formamide mol-ecule that occupy general positions. Between the carboxyl and the carboxyl-ate group an intra-molecular hydrogen bond is found in which the hydroxy H atom is disordered. Disorder is also found for the H atoms of one of the three methyl groups. In the crystal structure, additional inter-molecular N-H⋯O and O-H⋯O hydrogen bonding is found.
authors.affiliation: College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, People's Republic of China.
authors.forename: Cheng-Jun
authors.initials: CJ
authors.lastname: Hao
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Zhao