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DOE OSTI · 1272401

Materials Data on Mg2SiO4 by Materials Project

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Abstract

Mg2SiO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with six equivalent SiO4 tetrahedra and edges with six equivalent MgO6 octahedra. All Mg–O bond lengths are 2.09 Å. Si4+ is bonded to four equivalent O2- atoms to form SiO4 tetrahedra that share corners with twelve equivalent MgO6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Si–O bond lengths are 1.68 Å. O2- is bonded in a rectangular see-saw-like geometry to three equivalent Mg2+ and one Si4+ atom.

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36 MATERIALS SCIENCEcrystal structureMg-O-SiMg2SiO4

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2020-07-15. Materials Data on Mg2SiO4 by Materials Project. https://doi.org/10.17188/1272401

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