U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on Tm2Cu(GeO4)2 by Materials Project
Abstract
Tm2Cu(GeO4)2 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent Tm3+ sites. In the first Tm3+ site, Tm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Tm–O bond distances ranging from 2.21–2.80 Å. In the second Tm3+ site, Tm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Tm–O bond distances ranging from 2.24–2.72 Å. Cu2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cu–O bond distances ranging from 1.91–2.63 Å. There are three inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. All Ge–O bond lengths are 1.79 Å. In the second Ge4+ site, Ge4+ is bonded to five O2- atoms to form corner-sharing GeO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.78–1.95 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There is two shorter (1.77 Å) and two longer (1.80 Å) Ge–O bond length. There are ten inequivalent O2- sites. In the first O2- site, O2- ismore »
- Authors:
- Publication Date:
- Other Number(s):
- mp-1208044
- 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; Tm2Cu(GeO4)2; Cu-Ge-O-Tm
- OSTI Identifier:
- 1651630
- DOI:
- https://doi.org/10.17188/1651630
Citation Formats
The Materials Project. Materials Data on Tm2Cu(GeO4)2 by Materials Project. United States: N. p., 2019.
Web. doi:10.17188/1651630.
The Materials Project. Materials Data on Tm2Cu(GeO4)2 by Materials Project. United States. doi:https://doi.org/10.17188/1651630
The Materials Project. 2019.
"Materials Data on Tm2Cu(GeO4)2 by Materials Project". United States. doi:https://doi.org/10.17188/1651630. https://www.osti.gov/servlets/purl/1651630. Pub date:Sat Jan 12 00:00:00 EST 2019
@article{osti_1651630,
title = {Materials Data on Tm2Cu(GeO4)2 by Materials Project},
author = {The Materials Project},
abstractNote = {Tm2Cu(GeO4)2 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent Tm3+ sites. In the first Tm3+ site, Tm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Tm–O bond distances ranging from 2.21–2.80 Å. In the second Tm3+ site, Tm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Tm–O bond distances ranging from 2.24–2.72 Å. Cu2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cu–O bond distances ranging from 1.91–2.63 Å. There are three inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. All Ge–O bond lengths are 1.79 Å. In the second Ge4+ site, Ge4+ is bonded to five O2- atoms to form corner-sharing GeO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.78–1.95 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There is two shorter (1.77 Å) and two longer (1.80 Å) Ge–O bond length. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Tm3+ and one Ge4+ atom. In the second O2- site, O2- is bonded to two Tm3+, one Cu2+, and one Ge4+ atom to form a mixture of distorted corner and edge-sharing OTm2CuGe trigonal pyramids. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two Tm3+, two equivalent Cu2+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Tm3+, one Cu2+, and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Tm3+ and one Ge4+ atom. In the sixth O2- site, O2- is bonded to two Tm3+, one Cu2+, and one Ge4+ atom to form a mixture of distorted corner and edge-sharing OTm2CuGe trigonal pyramids. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to two Tm3+ and two Ge4+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Tm3+ and one Ge4+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Tm3+ and one Ge4+ atom. In the tenth O2- site, O2- is bonded to two Tm3+, one Cu2+, and one Ge4+ atom to form a mixture of distorted corner and edge-sharing OTm2CuGe trigonal pyramids.},
doi = {10.17188/1651630},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}