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Title: Materials Data on Na2Ge2O5 by Materials Project

Abstract

Na2Ge2O5 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to five O2- atoms to form distorted NaO5 square pyramids that share corners with four equivalent NaO5 square pyramids, corners with four GeO4 tetrahedra, and an edgeedge with one GeO4 tetrahedra. There are a spread of Na–O bond distances ranging from 2.40–2.69 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.80 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 two equivalent NaO5 square pyramids, corners with three GeO4 tetrahedra, and an edgeedge with one NaO5 square pyramid. There are a spread of Ge–O bond distances ranging from 1.71–1.81 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent NaO5 square pyramids and corners with three GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.72–1.81 Å. There are five inequivalentmore » O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to four Na1+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two equivalent Ge4+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two equivalent Ge4+ atoms. In the fourth O2- site, O2- is bonded to four Na1+ and one Ge4+ atom to form distorted corner-sharing ONa4Ge trigonal bipyramids. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+ and two Ge4+ atoms.« less

Publication Date:
Other Number(s):
mp-771248
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; Na2Ge2O5; Ge-Na-O
OSTI Identifier:
1300396
DOI:
https://doi.org/10.17188/1300396

Citation Formats

The Materials Project. Materials Data on Na2Ge2O5 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1300396.
The Materials Project. Materials Data on Na2Ge2O5 by Materials Project. United States. doi:https://doi.org/10.17188/1300396
The Materials Project. 2020. "Materials Data on Na2Ge2O5 by Materials Project". United States. doi:https://doi.org/10.17188/1300396. https://www.osti.gov/servlets/purl/1300396. Pub date:Wed Jul 15 00:00:00 EDT 2020
@article{osti_1300396,
title = {Materials Data on Na2Ge2O5 by Materials Project},
author = {The Materials Project},
abstractNote = {Na2Ge2O5 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to five O2- atoms to form distorted NaO5 square pyramids that share corners with four equivalent NaO5 square pyramids, corners with four GeO4 tetrahedra, and an edgeedge with one GeO4 tetrahedra. There are a spread of Na–O bond distances ranging from 2.40–2.69 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.80 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 two equivalent NaO5 square pyramids, corners with three GeO4 tetrahedra, and an edgeedge with one NaO5 square pyramid. There are a spread of Ge–O bond distances ranging from 1.71–1.81 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent NaO5 square pyramids and corners with three GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.72–1.81 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to four Na1+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two equivalent Ge4+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two equivalent Ge4+ atoms. In the fourth O2- site, O2- is bonded to four Na1+ and one Ge4+ atom to form distorted corner-sharing ONa4Ge trigonal bipyramids. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+ and two Ge4+ atoms.},
doi = {10.17188/1300396},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}