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Acta Cryst. (2014). E70, m167-m168
[ doi:10.1107/S1600536814007090 ]

Piperazine-1,4-diium bis­(hexa­hydroxido­hepta­oxidohexa­borato-[kappa]3O,O',O'')cobaltate(II) hexa­hydrate

N. Jamai, M. Rzaigui and S. A. Toumi

Abstract: In the title hydrate, (C4H12N2)[Co{B6O7(OH)6}2]·6H2O, both the dication and dianion are generated by crystallographic inversion symmetry. The Co2+ ion in the dianion adopts a fairly regular CoO6 octa­hedral coordination geometry arising from the two O,O',O''-tridentate ligands. In the crystal, the dianions and water mol­ecules are linked by O-H...O hydrogen bonds, generating a framework with large [100] channels, which are occupied by the organic dications. N-H...O and C-H...O hydrogen bonds consolidate the structure.

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