Acta Cryst. (2004). E60, i66-i68 [ doi:10.1107/S1600536804007895 ]
Abstract: K2Co(HPO3)2·2H2O is a new phosphite within the K-T-H3PO3 system (T = divalent transition metal cation). Its structure can be described as a three-dimensional network made up of KO6 and HPO3 polyhedra, which share corners and edges. In the cavities of this framework, Co2+ ions are located in an almost regular octahedral oxygen coordination. An IR study has confirmed the presence of HPO3 hydrogenphosphite groups.
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