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Title: Materials Data on Eu2SiO5 by Materials Project

Abstract

Eu2SiO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Eu3+ sites. In the first Eu3+ site, Eu3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Eu–O bond distances ranging from 2.32–2.73 Å. In the second Eu3+ site, Eu3+ is bonded to seven O2- atoms to form distorted EuO7 hexagonal pyramids that share a cornercorner with one SiO5 trigonal bipyramid, edges with four equivalent EuO7 hexagonal pyramids, and edges with two equivalent SiO5 trigonal bipyramids. There are a spread of Eu–O bond distances ranging from 2.34–2.54 Å. Si4+ is bonded to five O2- atoms to form distorted SiO5 trigonal bipyramids that share a cornercorner with one EuO7 hexagonal pyramid, corners with two equivalent SiO5 trigonal bipyramids, and edges with two equivalent EuO7 hexagonal pyramids. There are a spread of Si–O bond distances ranging from 1.64–1.91 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded to four Eu3+ atoms to form a mixture of edge and corner-sharing OEu4 tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Eu3+ and one Si4+ atom. Inmore » the third O2- site, O2- is bonded to three Eu3+ and one Si4+ atom to form distorted OEu3Si tetrahedra that share corners with eight OEu4 tetrahedra and edges with three OEu3Si tetrahedra. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Eu3+ and two equivalent Si4+ atoms. In the fifth O2- site, O2- is bonded to three Eu3+ and one Si4+ atom to form distorted OEu3Si tetrahedra that share corners with eight OEu4 tetrahedra and edges with two equivalent OEu3Si tetrahedra.« less

Authors:
Publication Date:
Other Number(s):
mp-867713
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; Eu2SiO5; Eu-O-Si
OSTI Identifier:
1312121
DOI:
https://doi.org/10.17188/1312121

Citation Formats

The Materials Project. Materials Data on Eu2SiO5 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1312121.
The Materials Project. Materials Data on Eu2SiO5 by Materials Project. United States. doi:https://doi.org/10.17188/1312121
The Materials Project. 2020. "Materials Data on Eu2SiO5 by Materials Project". United States. doi:https://doi.org/10.17188/1312121. https://www.osti.gov/servlets/purl/1312121. Pub date:Fri May 01 00:00:00 EDT 2020
@article{osti_1312121,
title = {Materials Data on Eu2SiO5 by Materials Project},
author = {The Materials Project},
abstractNote = {Eu2SiO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Eu3+ sites. In the first Eu3+ site, Eu3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Eu–O bond distances ranging from 2.32–2.73 Å. In the second Eu3+ site, Eu3+ is bonded to seven O2- atoms to form distorted EuO7 hexagonal pyramids that share a cornercorner with one SiO5 trigonal bipyramid, edges with four equivalent EuO7 hexagonal pyramids, and edges with two equivalent SiO5 trigonal bipyramids. There are a spread of Eu–O bond distances ranging from 2.34–2.54 Å. Si4+ is bonded to five O2- atoms to form distorted SiO5 trigonal bipyramids that share a cornercorner with one EuO7 hexagonal pyramid, corners with two equivalent SiO5 trigonal bipyramids, and edges with two equivalent EuO7 hexagonal pyramids. There are a spread of Si–O bond distances ranging from 1.64–1.91 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded to four Eu3+ atoms to form a mixture of edge and corner-sharing OEu4 tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Eu3+ and one Si4+ atom. In the third O2- site, O2- is bonded to three Eu3+ and one Si4+ atom to form distorted OEu3Si tetrahedra that share corners with eight OEu4 tetrahedra and edges with three OEu3Si tetrahedra. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Eu3+ and two equivalent Si4+ atoms. In the fifth O2- site, O2- is bonded to three Eu3+ and one Si4+ atom to form distorted OEu3Si tetrahedra that share corners with eight OEu4 tetrahedra and edges with two equivalent OEu3Si tetrahedra.},
doi = {10.17188/1312121},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}