Materials Data on CdP2(H4O5)2 by Materials Project

Abstract

CdP2(H4O5)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with four equivalent PO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.29–2.40 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 46–52°. There are a spread of P–O bond distances ranging from 1.52–1.59 Å. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.74 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fourth H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.55 Å) H–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to one P5+ and one H1+ atom. In the second O2- site, O2- is bonded in a water-like geometry to one Cd2+ and two H1+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Cd2+, one P5+, and one H1+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Cd2+, one P5+, and one H1+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one P5+ and one H1+ atom.