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Title: Materials Data on Na2Mg2(Si2O5)3 by Materials Project

Abstract

Na2Mg2(Si2O5)3 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 2-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.88 Å. In the second Na1+ site, Na1+ is bonded in a 3-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.45–2.79 Å. There are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent MgO4 trigonal pyramids. There are a spread of Mg–O bond distances ranging from 2.05–2.19 Å. In the second Mg2+ site, Mg2+ is bonded to four O2- atoms to form distorted MgO4 trigonal pyramids that share corners with four SiO4 tetrahedra and edges with two equivalent MgO6 octahedra. There is two shorter (1.97 Å) and two longer (1.98 Å) Mg–O bond length. There are three inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MgO6 octahedra andmore » corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. There are a spread of Si–O bond distances ranging from 1.59–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MgO6 octahedra, corners with three SiO4 tetrahedra, and a cornercorner with one MgO4 trigonal pyramid. The corner-sharing octahedral tilt angles are 37°. There are a spread of Si–O bond distances ranging from 1.60–1.65 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MgO6 octahedra, corners with three SiO4 tetrahedra, and a cornercorner with one MgO4 trigonal pyramid. The corner-sharing octahedral tilt angles are 43°. There are a spread of Si–O bond distances ranging from 1.60–1.65 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two Si4+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two equivalent Si4+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two equivalent Si4+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+ and two equivalent Si4+ atoms. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Mg2+, and one Si4+ atom.« less

Publication Date:
Other Number(s):
mp-12187
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; Na2Mg2(Si2O5)3; Mg-Na-O-Si
OSTI Identifier:
1188644
DOI:
https://doi.org/10.17188/1188644

Citation Formats

The Materials Project. Materials Data on Na2Mg2(Si2O5)3 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1188644.
The Materials Project. Materials Data on Na2Mg2(Si2O5)3 by Materials Project. United States. doi:https://doi.org/10.17188/1188644
The Materials Project. 2020. "Materials Data on Na2Mg2(Si2O5)3 by Materials Project". United States. doi:https://doi.org/10.17188/1188644. https://www.osti.gov/servlets/purl/1188644. Pub date:Wed Apr 29 00:00:00 EDT 2020
@article{osti_1188644,
title = {Materials Data on Na2Mg2(Si2O5)3 by Materials Project},
author = {The Materials Project},
abstractNote = {Na2Mg2(Si2O5)3 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 2-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.88 Å. In the second Na1+ site, Na1+ is bonded in a 3-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.45–2.79 Å. There are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent MgO4 trigonal pyramids. There are a spread of Mg–O bond distances ranging from 2.05–2.19 Å. In the second Mg2+ site, Mg2+ is bonded to four O2- atoms to form distorted MgO4 trigonal pyramids that share corners with four SiO4 tetrahedra and edges with two equivalent MgO6 octahedra. There is two shorter (1.97 Å) and two longer (1.98 Å) Mg–O bond length. There are three inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MgO6 octahedra and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. There are a spread of Si–O bond distances ranging from 1.59–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MgO6 octahedra, corners with three SiO4 tetrahedra, and a cornercorner with one MgO4 trigonal pyramid. The corner-sharing octahedral tilt angles are 37°. There are a spread of Si–O bond distances ranging from 1.60–1.65 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MgO6 octahedra, corners with three SiO4 tetrahedra, and a cornercorner with one MgO4 trigonal pyramid. The corner-sharing octahedral tilt angles are 43°. There are a spread of Si–O bond distances ranging from 1.60–1.65 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two Si4+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Mg2+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two equivalent Si4+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two equivalent Si4+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+ and two equivalent Si4+ atoms. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Mg2+, and one Si4+ atom.},
doi = {10.17188/1188644},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {4}
}