Chemical preparation, thermal behavior and crystal structure of calcium-cesium cyclohexaphosphate dihydrate

Article abstract of DOI:10.1016/0025-5408(96)00115-8

Chemical preparation and crystal structure are given for a new monovalent-divalent cation cyclohexaphosphate. This compound is monoclinic P2₁/c with the following unit cell parameters: a = 9.087(2), b = 12.246(4), c = 9.895(4) A, β = 116.98(2)°, Z = 2, V = 981(1) A³, and Dx = 2.897 g·cm^-3. The atomic arrangement can be described as successive wide layers made by the P₆O₁₈ ring anions and interconnected by the CaO₆ and CsO₈ polyhedra and the hydrogen bonds. Crystal structure was solved with a final R value of 0.032 for 6263 independent reflections. The thermal behavior has been investigated and interpreted by comparison with IR absorption spectroscopy and X-ray diffraction experiments.