Hao Cheng-Jun, Zhao Xiao-Jun
College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2010 Jun 16;66(Pt 7):m810. doi: 10.1107/S1600536810022282.
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.
在标题化合物[Zn(C₈H₉N₂O₄)₂(H₂O)₂]·2C₃H₇NO的晶体结构中，Zn(II)原子在扭曲的八面体环境中由两个N,O-双齿的2-丙基-1H-咪唑-4,5-二羧酸根阴离子和两个水分子配位。不对称单元由位于对称中心的一个Zn(II)原子以及处于一般位置的一个阴离子、一个水分子和一个额外的二甲基甲酰胺分子组成。在羧基和羧酸根之间发现了分子内氢键，其中羟基H原子无序。三个甲基之一的H原子也存在无序。在晶体结构中，还发现了额外的分子间N-H⋯O和O-H⋯O氢键。
