Materials Data on K2BiPCO7 by Materials Project
K2CBiPO7 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.61–3.01 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.25–1.34 Å. Bi3+ is bonded to six O2- atoms to form distorted BiO6 pentagonal pyramids that share corners with four equivalent PO4 tetrahedra. There are a spread of Bi–O bond distances ranging from 2.28–2.54 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent BiO6 pentagonal pyramids. There are a spread of P–O bond distances ranging from 1.55–1.58 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+ and one C4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+, one C4+, and one Bi3+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one C4+, and one Bi3+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Bi3+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one Bi3+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one Bi3+, and one P5+ atom.