U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on Mg3Si2O9 by Materials Project
Abstract
Mg3Si2O9 crystallizes in the orthorhombic Cmc2_1 space group. The structure is two-dimensional and consists of two Mg3Si2O9 sheets oriented in the (0, 0, 1) direction. there are two inequivalent Mg sites. In the first Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent SiO4 tetrahedra and edges with six equivalent MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.02–2.12 Å. In the second Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent SiO4 tetrahedra and edges with six MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.02–2.10 Å. Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with three MgO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. All Si–O bond lengths are 1.65 Å. There are six inequivalent O sites. In the first O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms. In the second O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms. In the third O site,more »
- Publication Date:
- Other Number(s):
- mp-1193906
- DOE Contract Number:
- AC02-05CH11231
- Research Org.:
- LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Collaborations:
- The Materials Project; MIT; UC Berkeley; Duke; U Louvain
- Subject:
- 36 MATERIALS SCIENCE; Mg-O-Si; Mg3Si2O9; crystal structure
- OSTI Identifier:
- 1699201
- DOI:
- https://doi.org/10.17188/1699201
Citation Formats
Materials Data on Mg3Si2O9 by Materials Project. United States: N. p., 2020.
Web. doi:10.17188/1699201.
Materials Data on Mg3Si2O9 by Materials Project. United States. doi:https://doi.org/10.17188/1699201
2020.
"Materials Data on Mg3Si2O9 by Materials Project". United States. doi:https://doi.org/10.17188/1699201. https://www.osti.gov/servlets/purl/1699201. Pub date:Tue May 05 04:00:00 UTC 2020
@article{osti_1699201,
title = {Materials Data on Mg3Si2O9 by Materials Project},
abstractNote = {Mg3Si2O9 crystallizes in the orthorhombic Cmc2_1 space group. The structure is two-dimensional and consists of two Mg3Si2O9 sheets oriented in the (0, 0, 1) direction. there are two inequivalent Mg sites. In the first Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent SiO4 tetrahedra and edges with six equivalent MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.02–2.12 Å. In the second Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent SiO4 tetrahedra and edges with six MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.02–2.10 Å. Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with three MgO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. All Si–O bond lengths are 1.65 Å. There are six inequivalent O sites. In the first O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms. In the second O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms. In the third O site, O is bonded in a bent 150 degrees geometry to two equivalent Si atoms. In the fourth O site, O is bonded in a bent 150 degrees geometry to two equivalent Si atoms. In the fifth O site, O is bonded in a distorted rectangular see-saw-like geometry to three Mg and one Si atom. In the sixth O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms.},
doi = {10.17188/1699201},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}