Yb3Al is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded to four equivalent Yb(2) and four equivalent Al(1) atoms to form a mixture of distorted face, corner, and edge-sharing YbYb4Al4 tetrahedra. In the second Yb site, Yb(2) is bonded in a body-centered cubic geometry to eight equivalent Yb(1) atoms. Al(1) is bonded in a body-centered cubic geometry to eight equivalent Yb(1) atoms.
Yb3Al is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded to four equivalent Yb(2) and four equivalent Al(1) atoms to form a mixture of distorted face, corner, and edge-sharing YbYb4Al4 tetrahedra. All Yb(1)-Yb(2) bond lengths are 3.39 Å. All Yb(1)-Al(1) bond lengths are 3.39 Å. In the second Yb site, Yb(2) is bonded in a body-centered cubic geometry to eight equivalent Yb(1) atoms. Al(1) is bonded in a body-centered cubic geometry to eight equivalent Yb(1) atoms.