Materials Data on Na3SiBiCO7 by Materials Project

Abstract

Na3SiCBiO7 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 2.42–2.71 Å. In the second Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.99 Å. Si4+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.65 Å) and one longer (1.68 Å) Si–O bond length. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.29 Å) and two longer (1.31 Å) C–O bond length. Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.28–2.60 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to four Na1+ and one C4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+, one C4+, and one Bi3+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Na1+, one C4+, and one Bi3+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+, one Si4+, and one Bi3+ atom. In the fifth O2- site, O2- is bonded in a distorted tetrahedral geometry to two equivalent Na1+, one Si4+, and one Bi3+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one Si4+, and one Bi3+ atom.