ThCd3 crystallizes in the orthorhombic Cmcm space group. Th(1) is bonded to four equivalent Cd(1) and eight equivalent Cd(2) atoms to form a mixture of face and corner-sharing ThCd12 cuboctahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 10-coordinate geometry to four equivalent Th(1) and six equivalent Cd(2) atoms. In the second Cd site, Cd(2) is bonded in a 10-coordinate geometry to four equivalent Th(1), three equivalent Cd(1), and three equivalent Cd(2) atoms.
ThCd3 crystallizes in the orthorhombic Cmcm space group. Th(1) is bonded to four equivalent Cd(1) and eight equivalent Cd(2) atoms to form a mixture of face and corner-sharing ThCd12 cuboctahedra. There are two shorter (3.25 Å) and two longer (3.42 Å) Th(1)-Cd(1) bond lengths. There are four shorter (3.25 Å) and four longer (3.42 Å) Th(1)-Cd(2) bond lengths. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 10-coordinate geometry to four equivalent Th(1) and six equivalent Cd(2) atoms. There are four shorter (3.07 Å) and two longer (3.17 Å) Cd(1)-Cd(2) bond lengths. In the second Cd site, Cd(2) is bonded in a 10-coordinate geometry to four equivalent Th(1), three equivalent Cd(1), and three equivalent Cd(2) atoms. There are two shorter (3.07 Å) and one longer (3.18 Å) Cd(2)-Cd(2) bond length.