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Tetra-aqua-(2,2'-bipyridine-5,5'-dicarboxyl-ato-?N,N')nickel(II) dihydrate.


ABSTRACT: In the title compound, [Ni(C(12)H(6)N(2)O(4))(H(2)O)(4)]·2H(2)O, obtained from a basic solution of 2,2'-bipyridine-5,5'-dicarboxyl-ate and nickel(II) chloride in water, the central Ni(II) cation (site symmetry 2) is coordinated by two N atoms from the 2,2'-bipyridine-5,5'-dicarboxyl-ate ligand and four aqua O atoms. The N-Ni-N angle is 78.64?(8)°. Weak but significant ?-? stacking inter-actions exist between the pyridine rings with a centroid-centroid distance of 3.652?(8)?Å. In addition, four O atoms of the two carboxyl groups form hydrogen bonds with both coordinated and uncoordinated water mol-ecules, forming an infinite three-dimensional network.

SUBMITTER: Yang H 

PROVIDER: S-EPMC2970486 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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Tetra-aqua-(2,2'-bipyridine-5,5'-dicarboxyl-ato-κN,N')nickel(II) dihydrate.

Yang Hua H  

Acta crystallographica. Section E, Structure reports online 20090912 Pt 10


In the title compound, [Ni(C(12)H(6)N(2)O(4))(H(2)O)(4)]·2H(2)O, obtained from a basic solution of 2,2'-bipyridine-5,5'-dicarboxyl-ate and nickel(II) chloride in water, the central Ni(II) cation (site symmetry 2) is coordinated by two N atoms from the 2,2'-bipyridine-5,5'-dicarboxyl-ate ligand and four aqua O atoms. The N-Ni-N angle is 78.64 (8)°. Weak but significant π-π stacking inter-actions exist between the pyridine rings with a centroid-centroid distance of 3.652 (8) Å. In addition, four O  ...[more]

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