Abstract
The asymmetric unit of the title compound, [Ni(C6H2N2O4)(C10H8N2)(H2O)]·1.25H2O, contains two independent chemically identical NiII complex cations and two and a half solvent water molecules. The NiII ions are in slightly distorted coordination environments. In the crystal structure, intermolecular O—H⋯O and weak C—H⋯O hydrogen bonds link cations and water molecules into a three-dimensional network. One of the three uncoordinated water molecules is half-occupied.
Highlights
The asymmetric unit of the title compound, [Ni(C6H2N2O4)(C10H8N2)(H2O)]Á1.25H2O, contains two independent chemically identical NiII complex cations and two and a half solvent water molecules
The NiII ions are in slightly distorted coordination environments
0.22 Â 0.10 Â 0.08 mm Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH2711)
Summary
Key indicators: single-crystal X-ray study; T = 294 K; mean (C–C) = 0.005 A; disorder in solvent or counterion; R factor = 0.037; wR factor = 0.102; data-toparameter ratio = 14.2. The asymmetric unit of the title compound, [Ni(C6H2N2O4)(C10H8N2)(H2O)]Á1.25H2O, contains two independent chemically identical NiII complex cations and two and a half solvent water molecules. Intermolecular O—HÁ Á ÁO and weak C—HÁ Á ÁO hydrogen bonds link cations and water molecules into a three-dimensional network. One of the three uncoordinated water molecules is half-occupied. Related literature For related structures, see: Wang et al (2006); Wang, Weng, et al (2007); Wang, Zheng & Jin (2007); Wang, Zheng, et al (2007, 2008); Wang, Mu et al (2008)
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