Synthesis and crystal structure of calcium hydrogen phosphite, CaHPO3

The hydrothermal synthesis and crystal structure of the simple inorganic compound CaHPO 3 , which crystallizes in the chiral space group P 4 3 2 1 2, are reported. The structure is built up from distorted CaO 7 capped trigonal prisms and HPO 3 pseudo pyramids, which share corners and edges to generate a three-dimensional network.