Materials Data on Na3TlPCO7 by Materials Project

Abstract

Na3TlCPO7 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.39–2.80 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.38–2.73 Å. Tl3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tl–O bond distances ranging from 2.44–2.94 Å. C3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.30 Å) and two longer (1.31 Å) C–O bond length. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.56 Å) and two longer (1.57 Å) P–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to four Na1+ and one C3+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+, one Tl3+, and one C3+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Na1+, one Tl3+, and one C3+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Tl3+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted tetrahedral geometry to two equivalent Na1+, one Tl3+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Na1+, two equivalent Tl3+, and one P5+ atom.