skip to main content
DOE Data Explorer title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Materials Data on KGe2(PO4)3 by Materials Project

Abstract

KGe2(PO4)3 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to twelve O2- atoms to form distorted KO12 cuboctahedra that share corners with six equivalent GeO6 octahedra, edges with six equivalent PO4 tetrahedra, and faces with two equivalent GeO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are six shorter (2.63 Å) and six longer (3.23 Å) K–O bond lengths. In the second K1+ site, K1+ is bonded to twelve O2- atoms to form distorted KO12 cuboctahedra that share corners with six equivalent GeO6 octahedra, edges with six equivalent PO4 tetrahedra, and faces with two equivalent GeO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are six shorter (2.77 Å) and six longer (3.32 Å) K–O bond lengths. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to six O2- atoms to form GeO6 octahedra that share corners with three equivalent KO12 cuboctahedra, corners with six equivalent PO4 tetrahedra, and a faceface with one KO12 cuboctahedra. There is three shorter (1.88 Å) and three longer (1.91 Å) Ge–O bond length. In the second Ge4+ site, Ge4+ ismore » bonded to six O2- atoms to form GeO6 octahedra that share corners with three equivalent KO12 cuboctahedra, corners with six equivalent PO4 tetrahedra, and a faceface with one KO12 cuboctahedra. There is three shorter (1.90 Å) and three longer (1.91 Å) Ge–O bond length. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four GeO6 octahedra and edges with two KO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 32–45°. There is two shorter (1.54 Å) and two longer (1.55 Å) P–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Ge4+, and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ge4+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one K1+, one Ge4+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ge4+, and one P5+ atom.« less

Publication Date:
Other Number(s):
mp-18203
DOE Contract Number:  
AC02-05CH11231; EDCBEE
Product Type:
Dataset
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Subject:
36 MATERIALS SCIENCE
Keywords:
crystal structure; KGe2(PO4)3; Ge-K-O-P
OSTI Identifier:
1192971
DOI:
https://doi.org/10.17188/1192971

Citation Formats

The Materials Project. Materials Data on KGe2(PO4)3 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1192971.
The Materials Project. Materials Data on KGe2(PO4)3 by Materials Project. United States. doi:https://doi.org/10.17188/1192971
The Materials Project. 2020. "Materials Data on KGe2(PO4)3 by Materials Project". United States. doi:https://doi.org/10.17188/1192971. https://www.osti.gov/servlets/purl/1192971. Pub date:Wed Jul 22 00:00:00 EDT 2020
@article{osti_1192971,
title = {Materials Data on KGe2(PO4)3 by Materials Project},
author = {The Materials Project},
abstractNote = {KGe2(PO4)3 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to twelve O2- atoms to form distorted KO12 cuboctahedra that share corners with six equivalent GeO6 octahedra, edges with six equivalent PO4 tetrahedra, and faces with two equivalent GeO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are six shorter (2.63 Å) and six longer (3.23 Å) K–O bond lengths. In the second K1+ site, K1+ is bonded to twelve O2- atoms to form distorted KO12 cuboctahedra that share corners with six equivalent GeO6 octahedra, edges with six equivalent PO4 tetrahedra, and faces with two equivalent GeO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are six shorter (2.77 Å) and six longer (3.32 Å) K–O bond lengths. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to six O2- atoms to form GeO6 octahedra that share corners with three equivalent KO12 cuboctahedra, corners with six equivalent PO4 tetrahedra, and a faceface with one KO12 cuboctahedra. There is three shorter (1.88 Å) and three longer (1.91 Å) Ge–O bond length. In the second Ge4+ site, Ge4+ is bonded to six O2- atoms to form GeO6 octahedra that share corners with three equivalent KO12 cuboctahedra, corners with six equivalent PO4 tetrahedra, and a faceface with one KO12 cuboctahedra. There is three shorter (1.90 Å) and three longer (1.91 Å) Ge–O bond length. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four GeO6 octahedra and edges with two KO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 32–45°. There is two shorter (1.54 Å) and two longer (1.55 Å) P–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Ge4+, and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ge4+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one K1+, one Ge4+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ge4+, and one P5+ atom.},
doi = {10.17188/1192971},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}