Materials Data on Mg2Si by Materials Project

Abstract

Mg2Si crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded in a 4-coordinate geometry to four Si4- atoms. There are a spread of Mg–Si bond distances ranging from 2.84–3.20 Å. In the second Mg2+ site, Mg2+ is bonded in a 6-coordinate geometry to six Si4- atoms. There are a spread of Mg–Si bond distances ranging from 2.93–3.08 Å. In the third Mg2+ site, Mg2+ is bonded in a 6-coordinate geometry to six Si4- atoms. There are a spread of Mg–Si bond distances ranging from 2.94–3.06 Å. In the fourth Mg2+ site, Mg2+ is bonded in a 4-coordinate geometry to four Si4- atoms. There are a spread of Mg–Si bond distances ranging from 2.82–3.20 Å. There are two inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to ten Mg2+ atoms. In the second Si4- site, Si4- is bonded in a 9-coordinate geometry to ten Mg2+ atoms.