title: The cyclo-tetra-phosphate Cd(2)P(4)O(12), a member of the isotypic series M(2)P(4)O(12) (M = Mg, Mn, Fe, Co, Ni, Cu).
abstract: The title compound, Cd(2)P(4)O(12), dicadmium cyclo-tetra-phosphate, crystallizes isotypically with the members of the series M(II) (2)P(4)O(12), where M = Mg, Mn, Fe, Co, Ni or Cu. Two CdO(6) octa-hedra, one with 2 and one with symmetry, share corners with the centrosymmetric P(4)O(12) (4-) ring anion that is built up from four corner-sharing PO(4) tetra-hedra. The isolated ring anions are arranged in layers parallel to (10) with the CdO(6) octa-hedra situated between these layers. The main difference between the individual M(II) (2)P(4)O(12) structures pertains to the different sizes of the MO(6) octa-hedra whereas the geometric parameters of all cyclo-P(4)O(12) (4-) anions are very similar.
authors: Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria.
authors: Matthias
authors: M
authors: Weil
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677