DOI: 10.17188/1750360
title: Materials Data on Mg2Si3 by Materials Project

description: Mg2Si3 is Magnesium tetraboride-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded in a 7-coordinate geometry to seven Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.81–3.16 Å. In the second Mg2+ site, Mg2+ is bonded in a 1-coordinate geometry to six Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.79–3.09 Å. In the third Mg2+ site, Mg2+ is bonded in a 9-coordinate geometry to nine Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.82–3.14 Å. In the fourth Mg2+ site, Mg2+ is bonded in a 4-coordinate geometry to nine Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.70–3.23 Å. In the fifth Mg2+ site, Mg2+ is bonded in a 1-coordinate geometry to six Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.79–3.09 Å. In the sixth Mg2+ site, Mg2+ is bonded in a 7-coordinate geometry to seven Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.81–3.16 Å. In the seventh Mg2+ site, Mg2+ is bonded in a 4-coordinate geometry to nine Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.70–3.23 Å. In the eighth Mg2+ site, Mg2+ is bonded in a 8-coordinate geometry to nine Si+1.33- atoms. There are a spread of Mg–Si bond distances ranging from 2.82–3.14 Å. There are twelve inequivalent Si+1.33- sites. In the first Si+1.33- site, Si+1.33- is bonded in a 1-coordinate geometry to five Mg2+ and four Si+1.33- atoms. There are a spread of Si–Si bond distances ranging from 2.52–2.68 Å. In the second Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to five Mg2+ and four Si+1.33- atoms. There are a spread of Si–Si bond distances ranging from 2.48–2.56 Å. In the third Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to four Mg2+ and four Si+1.33- atoms. The Si–Si bond length is 2.43 Å. In the fourth Si+1.33- site, Si+1.33- is bonded in a 10-coordinate geometry to six Mg2+ and four Si+1.33- atoms. The Si–Si bond length is 2.46 Å. In the fifth Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to five Mg2+ and three Si+1.33- atoms. There are a spread of Si–Si bond distances ranging from 2.46–2.54 Å. In the sixth Si+1.33- site, Si+1.33- is bonded in a 9-coordinate geometry to six Mg2+ and three Si+1.33- atoms. There are a spread of Si–Si bond distances ranging from 2.43–2.55 Å. In the seventh Si+1.33- site, Si+1.33- is bonded in a 10-coordinate geometry to six Mg2+ and four Si+1.33- atoms. There are two shorter (2.56 Å) and one longer (2.67 Å) Si–Si bond lengths. In the eighth Si+1.33- site, Si+1.33- is bonded in a 1-coordinate geometry to five Mg2+ and four Si+1.33- atoms. There are one shorter (2.52 Å) and one longer (2.57 Å) Si–Si bond lengths. In the ninth Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to five Mg2+ and four Si+1.33- atoms. The Si–Si bond length is 2.48 Å. In the tenth Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to four Mg2+ and four Si+1.33- atoms. In the eleventh Si+1.33- site, Si+1.33- is bonded in a 9-coordinate geometry to six Mg2+ and three Si+1.33- atoms. In the twelfth Si+1.33- site, Si+1.33- is bonded in a 8-coordinate geometry to five Mg2+ and three Si+1.33- atoms.