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Acta Cryst. (2012). E68, m1434
[ doi:10.1107/S1600536812044303 ]

Pyridinium cis-diaquabis(oxalato-[kappa]2O,O')chromate(III)

J. Nenwa, O. Befolo, B. Gouet, M. Mbarki and B. P. T. Fokwa

Abstract: The title compound, (C5H6N)[Cr(C2O4)2(H2O)2], contains one protonated pyridine molecule and one [Cr(C2O4)2(H2O)2]- complex anion in the asymmetric unit. The CrIII in the complex anion is coordinated in a distorted octahedral environment by two O atoms from two cis water molecules and four O atoms from two chelating oxalate dianions. The crystal packing is stabilized by intermolecular N-H...O(oxalate) and O-H...O(oxalate) hydrogen bonds and by [pi]-[pi] stacking interactions (centroid-centroid distance = 3.602 Å) between pyridine rings, thereby building up a three-dimensional network.


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