ThZn4 crystallizes in the tetragonal I4/mmm space group. Th(1) is bonded in a 16-coordinate geometry to eight equivalent Zn(1) and eight equivalent Zn(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 9-coordinate geometry to four equivalent Th(1), one Zn(1), and four equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded to four equivalent Th(1), four equivalent Zn(1), and four equivalent Zn(2) atoms to form a mixture of distorted corner, face, and edge-sharing ZnTh4Zn8 cuboctahedra.
ThZn4 crystallizes in the tetragonal I4/mmm space group. Th(1) is bonded in a 16-coordinate geometry to eight equivalent Zn(1) and eight equivalent Zn(2) atoms. All Th(1)-Zn(1) bond lengths are 3.24 Å. All Th(1)-Zn(2) bond lengths are 3.33 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 9-coordinate geometry to four equivalent Th(1), one Zn(1), and four equivalent Zn(2) atoms. The Zn(1)-Zn(1) bond length is 2.42 Å. All Zn(1)-Zn(2) bond lengths are 2.52 Å. In the second Zn site, Zn(2) is bonded to four equivalent Th(1), four equivalent Zn(1), and four equivalent Zn(2) atoms to form a mixture of distorted corner, face, and edge-sharing ZnTh4Zn8 cuboctahedra. All Zn(2)-Zn(2) bond lengths are 3.01 Å.