Mg3Au is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a trigonal planar geometry to three equivalent Au(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Au(1) atoms. Au(1) is bonded in a 11-coordinate geometry to three equivalent Mg(1) and eight equivalent Mg(2) atoms.
Mg3Au is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a trigonal planar geometry to three equivalent Au(1) atoms. All Mg(1)-Au(1) bond lengths are 2.69 Å. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Au(1) atoms. There is one shorter (2.78 Å) and three longer (3.06 Å) Mg(2)-Au(1) bond lengths. Au(1) is bonded in a 11-coordinate geometry to three equivalent Mg(1) and eight equivalent Mg(2) atoms.