YMg3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a body-centered cubic geometry to four equivalent Mg(2) and four equivalent Y(1) atoms. In the second Mg site, Mg(2) is bonded in a 14-coordinate geometry to eight equivalent Mg(1) and six equivalent Y(1) atoms. Y(1) is bonded in a distorted body-centered cubic geometry to six equivalent Mg(2) and eight equivalent Mg(1) atoms.
YMg3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a body-centered cubic geometry to four equivalent Mg(2) and four equivalent Y(1) atoms. All Mg(1)-Mg(2) bond lengths are 3.16 Å. All Mg(1)-Y(1) bond lengths are 3.16 Å. In the second Mg site, Mg(2) is bonded in a 14-coordinate geometry to eight equivalent Mg(1) and six equivalent Y(1) atoms. All Mg(2)-Y(1) bond lengths are 3.65 Å. Y(1) is bonded in a distorted body-centered cubic geometry to six equivalent Mg(2) and eight equivalent Mg(1) atoms.