Yb3Tc 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 Tc(1) atoms to form a mixture of distorted corner, edge, and face-sharing YbYb4Tc4 tetrahedra. In the second Yb site, Yb(2) is bonded in a 14-coordinate geometry to eight equivalent Yb(1) and six equivalent Tc(1) atoms. Tc(1) is bonded in a distorted body-centered cubic geometry to six equivalent Yb(2) and eight equivalent Yb(1) atoms.
Yb3Tc 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 Tc(1) atoms to form a mixture of distorted corner, edge, and face-sharing YbYb4Tc4 tetrahedra. All Yb(1)-Yb(2) bond lengths are 3.17 Å. All Yb(1)-Tc(1) bond lengths are 3.17 Å. In the second Yb site, Yb(2) is bonded in a 14-coordinate geometry to eight equivalent Yb(1) and six equivalent Tc(1) atoms. All Yb(2)-Tc(1) bond lengths are 3.66 Å. Tc(1) is bonded in a distorted body-centered cubic geometry to six equivalent Yb(2) and eight equivalent Yb(1) atoms.