Materials Data on BaCa(PO3)4 by Materials Project

Dataset · Wed Apr 29 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1269183· OSTI ID:1269183

CaBa(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.69–3.19 Å. Ca2+ is bonded to six O2- atoms to form distorted CaO6 pentagonal pyramids that share corners with six PO4 tetrahedra. There are a spread of Ca–O bond distances ranging from 2.32–2.41 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CaO6 pentagonal pyramids and corners with two PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.61 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CaO6 pentagonal pyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CaO6 pentagonal pyramid and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.63 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CaO6 pentagonal pyramid and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Ca2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Ca2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Ca2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Ca2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Ca2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the tenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the eleventh O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Ca2+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1269183
• Report Number(s): mp-556122
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Ba-Ca-O-P
BaCa(PO3)4
crystal structure