Abstract
In the title compound, {[Ni2(C7H3NO5)2(C12H12N2)(H2O)2]·4H2O}n, two NiII ions, two tridentate pyridine-2,6-dicarboxylate N-oxide ligands and two coordinated water molecules form centrosymmetric dinuclear units, which are further bridged by centrosymmetric 1,2-di-4-pyridylethane ligands into polymeric chains along [210]. Each NiII ion has a distorted square-pyramidal environment, with the basal plane formed by three O [Ni—O = 1.9290 (16)–1.9588 (10) Å] and one N [Ni—N = 1.9828 (18) Å] atoms and the apical position occupied by the water molecule [Ni—O = 2.2643 (11) Å]. The water molecules are involved in the formation of O—H⋯O hydrogen bonds.
Highlights
In the title compound, {[Ni2(C7H3NO5)2(C12H12N2)(H2O)2]Á4H2O}n, two NiII ions, two tridentate pyridine-2,6-dicarboxylate N-oxide ligands and two coordinated water molecules form centrosymmetric dinuclear units, which are further bridged by centrosymmetric 1,2-di-4-pyridylethane ligands into polymeric chains along [210]
Each NiII ion has a distorted square-pyramidal environment, with the basal plane formed by three O [Ni—O = 1.9290 (16)–1.9588 (10) A ] and one N [Ni—N = 1.9828 (18) A ] atoms and the apical position occupied by the water molecule [Ni—O = 2.2643 (11) A ]
The water molecules are involved in the formation of O— HÁ Á ÁO hydrogen bonds
Summary
Key indicators: single-crystal X-ray study; T = 298 K; mean (C–C) = 0.004 A; R factor = 0.028; wR factor = 0.063; data-to-parameter ratio = 14.3. In the title compound, {[Ni2(C7H3NO5)2(C12H12N2)(H2O)2]Á4H2O}n, two NiII ions, two tridentate pyridine-2,6-dicarboxylate N-oxide ligands and two coordinated water molecules form centrosymmetric dinuclear units, which are further bridged by centrosymmetric 1,2-di-4-pyridylethane ligands into polymeric chains along [210]. Each NiII ion has a distorted square-pyramidal environment, with the basal plane formed by three O [Ni—O = 1.9290 (16)–1.9588 (10) A ] and one N [Ni—N = 1.9828 (18) A ] atoms and the apical position occupied by the water molecule [Ni—O = 2.2643 (11) A ]. The water molecules are involved in the formation of O— HÁ Á ÁO hydrogen bonds.
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