1. Potassium trans-diaquabis[oxalato(2–)-κ2 O, O′]chromate(III).
- Author
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Bélomb, Michel, Nenwa, Justin, Fokwa, Boniface P. T., and Dronskowski, Richard
- Subjects
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ORGANOCHROMIUM compounds , *POTASSIUM compounds , *CRYSTALLIZATION , *CRYSTALLOGRAPHY , *ELECTROSTATICS , *COORDINATION compounds , *HYDROGEN bonding - Abstract
The title compound, K[Cr(C2O4)2(H2O)2], was crystallized from an aqueous solution. It is the first member without uncoordinated water molecules of formula Am[ M(C2O4)2(H2O)2]· xH2O, where A = monovalent cation, m = 1 or 2, M = metal(II) or metal(III), x≥ 0. The crystal packing is governed by electrostatic and coordinative interactions, and intermolecular hydrogen bonds help to stabilize the packing. The coordination of the Cr sites is quasi-octahedral, and the K ions are eight-coordinated by O atoms of oxalate ligands, forming strongly distorted square antiprisms. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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