U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on La2Be2GeO7 by Materials Project
Abstract
Be2La2GeO7 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share a cornercorner with one BeO4 tetrahedra and corners with two equivalent GeO4 tetrahedra. There is two shorter (1.59 Å) and two longer (1.75 Å) Be–O bond length. La3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of La–O bond distances ranging from 2.41–2.71 Å. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with four equivalent BeO4 tetrahedra. All Ge–O bond lengths are 1.78 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two equivalent La3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Be2+ and two equivalent La3+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one Be2+ and three equivalent La3+ atoms.
- Authors:
- Publication Date:
- Other Number(s):
- mp-19926
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- 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)
- Collaborations:
- MIT; UC Berkeley; Duke; U Louvain
- Subject:
- 36 MATERIALS SCIENCE
- Keywords:
- crystal structure; La2Be2GeO7; Be-Ge-La-O
- OSTI Identifier:
- 1195111
- DOI:
- https://doi.org/10.17188/1195111
Citation Formats
The Materials Project. Materials Data on La2Be2GeO7 by Materials Project. United States: N. p., 2020.
Web. doi:10.17188/1195111.
The Materials Project. Materials Data on La2Be2GeO7 by Materials Project. United States. doi:https://doi.org/10.17188/1195111
The Materials Project. 2020.
"Materials Data on La2Be2GeO7 by Materials Project". United States. doi:https://doi.org/10.17188/1195111. https://www.osti.gov/servlets/purl/1195111. Pub date:Tue Jul 14 00:00:00 EDT 2020
@article{osti_1195111,
title = {Materials Data on La2Be2GeO7 by Materials Project},
author = {The Materials Project},
abstractNote = {Be2La2GeO7 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share a cornercorner with one BeO4 tetrahedra and corners with two equivalent GeO4 tetrahedra. There is two shorter (1.59 Å) and two longer (1.75 Å) Be–O bond length. La3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of La–O bond distances ranging from 2.41–2.71 Å. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with four equivalent BeO4 tetrahedra. All Ge–O bond lengths are 1.78 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two equivalent La3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Be2+ and two equivalent La3+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one Be2+ and three equivalent La3+ atoms.},
doi = {10.17188/1195111},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}