Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)


metal-organic compounds



lh5610 scheme

Acta Cryst. (2013). E69, m309-m310    [ doi:10.1107/S1600536813012208 ]

Bis(3-aminopyrazine-2-carboxylato-[kappa]2N1,O)diaquanickel(II) dihydrate

R. Bouchene, A. Khadri, S. Bouacida, F. Berrah and H. Merazig

Abstract: In the title compound, [Ni(C5H4N3O2)2(H2O)2]·2H2O, the NiII ion lies on an inversion center and is coordinated in an slightly distorted octahedral environment by two N,O-chelating 3-aminopyrazine-2-carboxylate (APZC) ligands in the equatorial plane and two trans-axial aqua ligands. In the crystal, O-H...O, N-H...O and O-H...N hydrogen bonds involving the solvent water molecules, aqua and APZC ligands form layers parallel to (010). These layers are linked further via O-H...O, N-H...O and C-H...O hydrogen bonds involving the axial aqua ligands, amino groups and the carboxylate groups of the APZC ligands, forming a three-dimensional network.


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