Yb2Tl is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded to four equivalent Tl(1) atoms to form a mixture of distorted corner and edge-sharing YbTl4 tetrahedra. In the second Yb site, Yb(2) is bonded in a 5-coordinate geometry to five equivalent Tl(1) atoms. Tl(1) is bonded in a 9-coordinate geometry to four equivalent Yb(1) and five equivalent Yb(2) atoms.
Yb2Tl is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded to four equivalent Tl(1) atoms to form a mixture of distorted corner and edge-sharing YbTl4 tetrahedra. There are a spread of Yb(1)-Tl(1) bond distances ranging from 3.13-3.20 Å. In the second Yb site, Yb(2) is bonded in a 5-coordinate geometry to five equivalent Tl(1) atoms. There are a spread of Yb(2)-Tl(1) bond distances ranging from 3.28-3.63 Å. Tl(1) is bonded in a 9-coordinate geometry to four equivalent Yb(1) and five equivalent Yb(2) atoms.