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Title: Materials Data on Er2Cu(GeO3)4 by Materials Project

Abstract

Er2Cu(GeO3)4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Er3+ is bonded to seven O2- atoms to form distorted ErO7 pentagonal bipyramids that share corners with six GeO4 tetrahedra, edges with two equivalent ErO7 pentagonal bipyramids, and an edgeedge with one GeO4 tetrahedra. There are a spread of Er–O bond distances ranging from 2.23–2.55 Å. Cu2+ is bonded in a square co-planar geometry to four O2- atoms. All Cu–O bond lengths are 1.98 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent ErO7 pentagonal bipyramids and corners with two equivalent GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.76–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent ErO7 pentagonal bipyramids, corners with two equivalent GeO4 tetrahedra, and an edgeedge with one ErO7 pentagonal bipyramid. There are a spread of Ge–O bond distances ranging from 1.75–1.82 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to twomore » equivalent Er3+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Er3+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Er3+ and two Ge4+ atoms. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Er3+, one Cu2+, and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Er3+, one Cu2+, and one Ge4+ atom.« less

Authors:
Publication Date:
Other Number(s):
mp-16057
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; Er2Cu(GeO3)4; Cu-Er-Ge-O
OSTI Identifier:
1191545
DOI:
https://doi.org/10.17188/1191545

Citation Formats

The Materials Project. Materials Data on Er2Cu(GeO3)4 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1191545.
The Materials Project. Materials Data on Er2Cu(GeO3)4 by Materials Project. United States. doi:https://doi.org/10.17188/1191545
The Materials Project. 2020. "Materials Data on Er2Cu(GeO3)4 by Materials Project". United States. doi:https://doi.org/10.17188/1191545. https://www.osti.gov/servlets/purl/1191545. Pub date:Sat Jul 18 00:00:00 EDT 2020
@article{osti_1191545,
title = {Materials Data on Er2Cu(GeO3)4 by Materials Project},
author = {The Materials Project},
abstractNote = {Er2Cu(GeO3)4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Er3+ is bonded to seven O2- atoms to form distorted ErO7 pentagonal bipyramids that share corners with six GeO4 tetrahedra, edges with two equivalent ErO7 pentagonal bipyramids, and an edgeedge with one GeO4 tetrahedra. There are a spread of Er–O bond distances ranging from 2.23–2.55 Å. Cu2+ is bonded in a square co-planar geometry to four O2- atoms. All Cu–O bond lengths are 1.98 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent ErO7 pentagonal bipyramids and corners with two equivalent GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.76–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent ErO7 pentagonal bipyramids, corners with two equivalent GeO4 tetrahedra, and an edgeedge with one ErO7 pentagonal bipyramid. There are a spread of Ge–O bond distances ranging from 1.75–1.82 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Er3+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Er3+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Er3+ and two Ge4+ atoms. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Er3+, one Cu2+, and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Er3+, one Cu2+, and one Ge4+ atom.},
doi = {10.17188/1191545},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jul 18 00:00:00 EDT 2020},
month = {Sat Jul 18 00:00:00 EDT 2020}
}