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Title: Materials Data on MgSi2 by Materials Project

Abstract

MgSi2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Mg sites. In the first Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.78–3.03 Å. In the second Mg site, Mg is bonded in a 8-coordinate geometry to eight Si atoms. There are a spread of Mg–Si bond distances ranging from 2.87–2.98 Å. In the third Mg site, Mg is bonded to eight Si atoms to form distorted edge-sharing MgSi8 hexagonal bipyramids. There are a spread of Mg–Si bond distances ranging from 2.78–3.02 Å. In the fourth Mg site, Mg is bonded in a 5-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.76–3.15 Å. There are eight inequivalent Si sites. In the first Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms. All Si–Si bond lengths are 2.39 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to five Mg and three Si atoms. Both Si–Si bond lengths are 2.41 Å. In the third Si site, Si is bonded inmore » a 6-coordinate geometry to three Mg and three Si atoms. There are two shorter (2.37 Å) and one longer (2.38 Å) Si–Si bond lengths. In the fourth Si site, Si is bonded in a 5-coordinate geometry to two equivalent Mg and three Si atoms. There are two shorter (2.36 Å) and one longer (2.38 Å) Si–Si bond lengths. In the fifth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two equivalent Si atoms. In the sixth Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms. The Si–Si bond length is 2.43 Å. In the seventh Si site, Si is bonded in a distorted hexagonal planar geometry to two equivalent Mg and four Si atoms. In the eighth Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms.« less

Publication Date:
Other Number(s):
mp-1073604
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; MgSi2; Mg-Si
OSTI Identifier:
1729200
DOI:
https://doi.org/10.17188/1729200

Citation Formats

The Materials Project. Materials Data on MgSi2 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1729200.
The Materials Project. Materials Data on MgSi2 by Materials Project. United States. doi:https://doi.org/10.17188/1729200
The Materials Project. 2020. "Materials Data on MgSi2 by Materials Project". United States. doi:https://doi.org/10.17188/1729200. https://www.osti.gov/servlets/purl/1729200. Pub date:Sun May 03 00:00:00 EDT 2020
@article{osti_1729200,
title = {Materials Data on MgSi2 by Materials Project},
author = {The Materials Project},
abstractNote = {MgSi2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Mg sites. In the first Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.78–3.03 Å. In the second Mg site, Mg is bonded in a 8-coordinate geometry to eight Si atoms. There are a spread of Mg–Si bond distances ranging from 2.87–2.98 Å. In the third Mg site, Mg is bonded to eight Si atoms to form distorted edge-sharing MgSi8 hexagonal bipyramids. There are a spread of Mg–Si bond distances ranging from 2.78–3.02 Å. In the fourth Mg site, Mg is bonded in a 5-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.76–3.15 Å. There are eight inequivalent Si sites. In the first Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms. All Si–Si bond lengths are 2.39 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to five Mg and three Si atoms. Both Si–Si bond lengths are 2.41 Å. In the third Si site, Si is bonded in a 6-coordinate geometry to three Mg and three Si atoms. There are two shorter (2.37 Å) and one longer (2.38 Å) Si–Si bond lengths. In the fourth Si site, Si is bonded in a 5-coordinate geometry to two equivalent Mg and three Si atoms. There are two shorter (2.36 Å) and one longer (2.38 Å) Si–Si bond lengths. In the fifth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two equivalent Si atoms. In the sixth Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms. The Si–Si bond length is 2.43 Å. In the seventh Si site, Si is bonded in a distorted hexagonal planar geometry to two equivalent Mg and four Si atoms. In the eighth Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms.},
doi = {10.17188/1729200},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}