Materials Data on CdPHO3 by Materials Project
CdPHO3 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Cd2+ is bonded to six O2- atoms to form distorted CdO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with six equivalent PHO3 tetrahedra, and edges with two equivalent CdO6 octahedra. The corner-sharing octahedral tilt angles are 71°. There are a spread of Cd–O bond distances ranging from 2.28–2.40 Å. P5+ is bonded to one H1- and three O2- atoms to form distorted PHO3 tetrahedra that share corners with six equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 36–66°. The P–H bond length is 1.41 Å. There is one shorter (1.54 Å) and two longer (1.55 Å) P–O bond length. H1- is bonded in a single-bond geometry to one P5+ atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Cd2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cd2+ and one P5+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Cd2+ and one P5+ atom.