Materials Data on Mg3Si4 by Materials Project

Dataset · Mon May 04 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1738137· OSTI ID:1738137

Mg3Si4 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 two Mg and six Si atoms. There are one shorter (2.92 Å) and one longer (3.13 Å) Mg–Mg bond lengths. There are a spread of Mg–Si bond distances ranging from 2.76–2.92 Å. In the second Mg site, Mg is bonded in a distorted trigonal pyramidal geometry to two Mg and five Si atoms. There are one shorter (2.89 Å) and one longer (3.11 Å) Mg–Mg bond lengths. There are a spread of Mg–Si bond distances ranging from 2.73–3.20 Å. In the third Mg site, Mg is bonded in a 12-coordinate geometry to five Mg and seven Si atoms. There are a spread of Mg–Mg bond distances ranging from 2.97–3.19 Å. There are a spread of Mg–Si bond distances ranging from 2.72–3.24 Å. In the fourth Mg site, Mg is bonded in a 8-coordinate geometry to five Mg and eight Si atoms. There are one shorter (2.97 Å) and one longer (3.09 Å) Mg–Mg bond lengths. There are a spread of Mg–Si bond distances ranging from 2.79–3.08 Å. In the fifth Mg site, Mg is bonded in a 12-coordinate geometry to two Mg and six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.78–3.06 Å. In the sixth Mg site, Mg is bonded in a 6-coordinate geometry to two Mg and seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.84–3.13 Å. There are eight inequivalent Si sites. In the first Si site, Si is bonded in a 6-coordinate geometry to two Mg and four Si atoms. There are a spread of Si–Si bond distances ranging from 2.47–2.60 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to four Mg and four Si atoms. There are a spread of Si–Si bond distances ranging from 2.48–2.56 Å. In the third Si site, Si is bonded in a 9-coordinate geometry to five Mg and three Si atoms. There are a spread of Si–Si bond distances ranging from 2.45–2.62 Å. In the fourth Si site, Si is bonded in a 9-coordinate geometry to six Mg and three Si atoms. In the fifth Si site, Si is bonded in a 8-coordinate geometry to four Mg and four Si atoms. The Si–Si bond length is 2.61 Å. In the sixth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. In the seventh Si site, Si is bonded in a 9-coordinate geometry to six Mg and three Si atoms. In the eighth Si site, Si is bonded in a 7-coordinate geometry to six Mg and one Si atom.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1738137
• Report Number(s): mp-1075196
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Mg-Si
Mg3Si4
crystal structure