Materials Data on Rb2Sr(PO3)4 by Materials Project
Rb2Sr(PO3)4 crystallizes in the tetragonal I-4 space group. The structure is three-dimensional. Rb1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Rb–O bond distances ranging from 2.92–3.45 Å. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are four shorter (2.61 Å) and four longer (2.73 Å) Sr–O bond lengths. P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Rb1+ and two equivalent P5+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Rb1+, one Sr2+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Rb1+, one Sr2+, and one P5+ atom.