DOI: 10.17188/1652243
title: Materials Data on Mg6Si5 by Materials Project

description: Mg6Si5 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded in a bent 150 degrees geometry to two Si+2.40- atoms. There are one shorter (2.85 Å) and one longer (2.93 Å) Mg–Si bond lengths. In the second Mg2+ site, Mg2+ is bonded in a rectangular see-saw-like geometry to four Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.59–2.72 Å. In the third Mg2+ site, Mg2+ is bonded in a 7-coordinate geometry to seven Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.73–2.99 Å. In the fourth Mg2+ site, Mg2+ is bonded in a 5-coordinate geometry to five Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.75–3.01 Å. In the fifth Mg2+ site, Mg2+ is bonded in a see-saw-like geometry to four Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.69–3.00 Å. In the sixth Mg2+ site, Mg2+ is bonded in a 5-coordinate geometry to five Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.76–3.13 Å. In the seventh Mg2+ site, Mg2+ is bonded in a 5-coordinate geometry to five Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.74–3.16 Å. In the eighth Mg2+ site, Mg2+ is bonded in a 4-coordinate geometry to four Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.74–2.96 Å. In the ninth Mg2+ site, Mg2+ is bonded in a 1-coordinate geometry to two Si+2.40- atoms. There are one shorter (2.62 Å) and one longer (2.87 Å) Mg–Si bond lengths. In the tenth Mg2+ site, Mg2+ is bonded in a 5-coordinate geometry to five Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.74–2.96 Å. In the eleventh Mg2+ site, Mg2+ is bonded in a single-bond geometry to one Si+2.40- atom. The Mg–Si bond length is 2.66 Å. In the twelfth Mg2+ site, Mg2+ is bonded in a 3-coordinate geometry to three Si+2.40- atoms. There are a spread of Mg–Si bond distances ranging from 2.67–3.08 Å. There are ten inequivalent Si+2.40- sites. In the first Si+2.40- site, Si+2.40- is bonded in a 7-coordinate geometry to five Mg2+ and two Si+2.40- atoms. There are one shorter (2.36 Å) and one longer (2.47 Å) Si–Si bond lengths. In the second Si+2.40- site, Si+2.40- is bonded in a 7-coordinate geometry to five Mg2+ and two Si+2.40- atoms. The Si–Si bond length is 2.41 Å. In the third Si+2.40- site, Si+2.40- is bonded in a 8-coordinate geometry to five Mg2+ and three Si+2.40- atoms. There are a spread of Si–Si bond distances ranging from 2.43–2.69 Å. In the fourth Si+2.40- site, Si+2.40- is bonded in a 7-coordinate geometry to five Mg2+ and two Si+2.40- atoms. There are one shorter (2.35 Å) and one longer (2.49 Å) Si–Si bond lengths. In the fifth Si+2.40- site, Si+2.40- is bonded in a 6-coordinate geometry to three Mg2+ and three Si+2.40- atoms. There are one shorter (2.38 Å) and one longer (2.42 Å) Si–Si bond lengths. In the sixth Si+2.40- site, Si+2.40- is bonded in a 8-coordinate geometry to six Mg2+ and two Si+2.40- atoms. There are one shorter (2.41 Å) and one longer (2.54 Å) Si–Si bond lengths. In the seventh Si+2.40- site, Si+2.40- is bonded in a 8-coordinate geometry to six Mg2+ and two Si+2.40- atoms. In the eighth Si+2.40- site, Si+2.40- is bonded in a 2-coordinate geometry to four Mg2+ and two Si+2.40- atoms. In the ninth Si+2.40- site, Si+2.40- is bonded in a 6-coordinate geometry to four Mg2+ and two Si+2.40- atoms. In the tenth Si+2.40- site, Si+2.40- is bonded in a 8-coordinate geometry to four Mg2+ and four Si+2.40- atoms.