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 π–π stacking interactions (centroid–centroid distance = 3.602 Å) between pyridine rings, thereby building up a three-dimensional network.
Highlights
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
H atoms treated by a mixture of independent and constrained refinement max = 0.59 e Å3
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
Summary
H atoms treated by a mixture of independent and constrained refinement max = 0.59 e Å3. Min = 0.69 e Å3 a Department of Inorganic Chemistry, University of Yaounde I, POB 812 Yaounde, Cameroon, bHigher Teacher Training College, POB 47, University of Yaounde 1, Cameroon, and cInstitut für Anorganische Chemie, RWTH Aachen, D-52056. R factor = 0.061; wR factor = 0.160; data-to-parameter ratio = 18.0. 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—. = 3.602 Å) between pyridine rings, thereby building up a three-dimensional network
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