Materials Data on MgSi by Materials Project

MgSi is Magnesium tetraboride-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are six inequivalent Mg sites. In the first Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.65–2.97 Å. In the second Mg site, Mg is bonded in a 5-coordinate geometry to five Si atoms. There are a spread of Mg–Si bond distances ranging from 2.76–2.98 Å. In the third Mg site, Mg is bonded in a 5-coordinate geometry to five Si atoms. There are a spread of Mg–Si bond distances ranging from 2.69–2.97 Å. In the fourth Mg site, Mg is bonded in a 3-coordinate geometry to four Si atoms. There are a spread of Mg–Si bond distances ranging from 2.68–3.18 Å. In the fifth Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.69–3.04 Å. In the sixth Mg site, Mg is bonded in a 4-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.65–3.16 Å. There are six inequivalent Si sites. In the first Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms. There are a spread of Si–Si bond distances ranging from 2.44–2.51 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to seven Mg and one Si atom. The Si–Si bond length is 2.45 Å. In the third Si site, Si is bonded in a 7-coordinate geometry to four Mg and three Si atoms. There are one shorter (2.37 Å) and one longer (2.48 Å) Si–Si bond lengths. In the fourth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. In the fifth Si site, Si is bonded in a 7-coordinate geometry to six Mg and one Si atom. In the sixth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms.