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Acta Cryst. (2013). E69, m532-m533
[ doi:10.1107/S1600536813024252 ]

Bis[1-methoxy-2,2,2-tris(pyrazol-1-yl-[kappa]N2)ethane]nickel(II) bis(trifluoromethanesulfonate) dihydrate

G. Lyubartseva, S. Parkin and U. P. Mallik

Abstract: In the title salt, [Ni(C12H14N6O)2](CF3SO3)2·2H2O, the NiII cation is located on an inversion centre and is coordinated by six N atoms from two tridentate 1-methoxy-2,2,2-tris(pyrazol-1-yl)ethane ligands in a distorted octahedral geometry. The Ni-N distances range from 2.0594 (12) to 2.0664 (12) Å, intra-ligand N-Ni-N angles range from 84.59 (5) to 86.06 (5)°, and adjacent inter-ligand N-Ni-N angles range between 93.94 (5) and 95.41 (5)°. In the crystal, inversion-related pyrazole rings are [pi]-[pi] stacked, with an interplanar spacing of 3.4494 (18) Å, forming chains that propagate parallel to the a-axis direction. Intermolecular O-H...O hydrogen bonds are present between water molecules and trifluoromethanesulfonate anions.

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