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Acta Cryst. (2012). E68, m1325-m1326
[ doi:10.1107/S1600536812040950 ]

2-Aminopyridinium trans-diaquabis(oxalato-[kappa]2O,O)chromate(III)

J. Nenwa, G. Bebga, S. Martin, M. M. Bélombé, M. Mbarki and B. P. T. Fokwa

Abstract: In the title hybrid salt, (C5H7N2)[Cr(H2O)2(C2O4)2], the CrIII ion is coordinated in a slightly distorted octahedral environment by four O atoms from two oxalate ligands in the equatorial plane and by two water O atoms in the axial sites. The 2-aminopyridinium cation is disordered over two sets of sites in a 0.800 (7):0.200 (7) ratio. In the crystal, N-H...O and O-H...O hydrogen bonds connect the components into a three-dimensional network. The crystal studied was an inversion twin with components in a ratio 0.75 (2):0.25 (2).

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