Materials Data on Mg17Al11Pb by Materials Project

Abstract

Mg17Al11Pb is gamma-brass-derived structured and crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are eleven inequivalent Mg sites. In the first Mg site, Mg is bonded in a 10-coordinate geometry to four Mg and six Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.02–3.14 Å. There are a spread of Mg–Al bond distances ranging from 3.02–3.16 Å. In the second Mg site, Mg is bonded in a 10-coordinate geometry to four Mg and six Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.09–3.13 Å. There are four shorter (3.09 Å) and two longer (3.12 Å) Mg–Al bond lengths. In the third Mg site, Mg is bonded in a 1-coordinate geometry to four Mg, eleven Al, and one Pb atom. Both Mg–Mg bond lengths are 3.23 Å. There are a spread of Mg–Al bond distances ranging from 3.20–3.35 Å. The Mg–Pb bond length is 3.38 Å. In the fourth Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. There are four shorter (3.19 Å) and two longer (3.22 Å) Mg–Mg bond lengths. There are a spread of Mg–Al bond distances ranging from 2.90–3.21 Å. In the fifth Mg site, Mg is bonded in a 1-coordinate geometry to seven Mg, four Al, and one Pb atom. There are a spread of Mg–Mg bond distances ranging from 3.18–3.33 Å. There are two shorter (2.99 Å) and two longer (3.12 Å) Mg–Al bond lengths. The Mg–Pb bond length is 3.01 Å. In the sixth Mg site, Mg is bonded in a 4-coordinate geometry to seven Mg, three Al, and one Pb atom. There are a spread of Mg–Mg bond distances ranging from 3.13–3.27 Å. There are a spread of Mg–Al bond distances ranging from 2.92–2.96 Å. The Mg–Pb bond length is 3.24 Å. In the seventh Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.09–3.20 Å. There are a spread of Mg–Al bond distances ranging from 2.90–3.24 Å. In the eighth Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg, four Al, and one Pb atom. There are a spread of Mg–Mg bond distances ranging from 3.15–3.18 Å. There are a spread of Mg–Al bond distances ranging from 2.93–3.15 Å. The Mg–Pb bond length is 3.11 Å. In the ninth Mg site, Mg is bonded in a 1-coordinate geometry to four Mg, five Al, and one Pb atom. There are one shorter (3.03 Å) and one longer (3.08 Å) Mg–Mg bond lengths. There are a spread of Mg–Al bond distances ranging from 3.10–3.25 Å. The Mg–Pb bond length is 3.23 Å. In the tenth Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. The Mg–Mg bond length is 3.15 Å. There are a spread of Mg–Al bond distances ranging from 2.88–3.27 Å. In the eleventh Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. There are a spread of Mg–Al bond distances ranging from 2.95–3.24 Å. There are six inequivalent Al sites. In the first Al site, Al is bonded in a 4-coordinate geometry to six Mg, two equivalent Al, and one Pb atom. Both Al–Al bond lengths are 2.72 Å. The Al–Pb bond length is 2.90 Å. In the second Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. There are a spread of Al–Al bond distances ranging from 2.73–2.77 Å. In the third Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. There are one shorter (2.71 Å) and one longer (2.82 Å) Al–Al bond lengths. In the fourth Al site, Al is bonded in a 11-coordinate geometry to eight Mg, two Al, and one Pb atom. There are one shorter (2.69 Å) and one longer (2.84 Å) Al–Al bond lengths. The Al–Pb bond length is 2.98 Å. In the fifth Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. The Al–Al bond length is 2.77 Å. In the sixth Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. Pb is bonded in a 11-coordinate geometry to eight Mg and three Al atoms.