ThGa2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Th(1) is bonded to twelve Ga(1,1,1) atoms to form a mixture of face and edge-sharing ThGa12 cuboctahedra. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three Ga(1,1) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three Ga(1,1) atoms. In the third Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three Ga(1,1) atoms.
ThGa2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Th(1) is bonded to twelve Ga(1,1,1) atoms to form a mixture of face and edge-sharing ThGa12 cuboctahedra. There are four shorter (3.24 Å) and eight longer (3.25 Å) Th(1)-Ga(1,1,1) bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three Ga(1,1) atoms. There is one shorter (2.44 Å) and two longer (2.46 Å) Ga(1)-Ga(1,1) bond lengths. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three Ga(1,1) atoms. The Ga(1)-Ga(1) bond length is 2.44 Å. In the third Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three Ga(1,1) atoms. There is one shorter (2.44 Å) and two longer (2.46 Å) Ga(1)-Ga(1,1) bond lengths.