Acta Cryst. (2008). E64, m70  [ doi:10.1107/S1600536807062885 ]

Poly[[tetraaquabis[₃-1-ethyl-6-fluoro-4-oxo-7-(piperazinium-1-yl)-1H-quinoline-3-carboxylato]dinickel(II)] hydroxide nitrate]

W.-D. Song, Y.-L. Wan, P.-Z. Hong and S. W. Ng

Abstract: In the title compound, [Ni₂(C₁₆H₁₈FN₃O₃)₂(H₂O)₄](OH)(NO₃), the cationic [Ni₂(C₁₆H₁₈FN₃O₃)₂(H₂O)₄]²⁺ building units are linked through Ni-O_carboxylate and Ni-N_amino bridges into a layer structure. The two independent nickel atoms lie on inversion centres: one adopts an NiO₆ octahedral geometry, the other a trans-NiN₂O₄ octahedral arrangement. The charge-balancing hydroxide and nitrate ions are of half site occupancy each. A network of O-HO and N-HO hydrogen bonds helps to establish the packing.

Online 6 December 2007

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