ThRhGa crystallizes in the hexagonal P-62m space group. Th(1) is bonded in a 11-coordinate geometry to one Rh(2), four equivalent Rh(1), and six equivalent Ga(1) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(2) is bonded in a 9-coordinate geometry to three equivalent Th(1) and six equivalent Ga(1) atoms. In the second Rh site, Rh(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three equivalent Ga(1) atoms. Ga(1) is bonded in a 4-coordinate geometry to six equivalent Th(1), two equivalent Rh(1), and two equivalent Rh(2) atoms.
ThRhGa crystallizes in the hexagonal P-62m space group. Th(1) is bonded in a 11-coordinate geometry to one Rh(2), four equivalent Rh(1), and six equivalent Ga(1) atoms. The Th(1)-Rh(2) bond length is 2.99 Å. All Th(1)-Rh(1) bond lengths are 2.98 Å. There are two shorter (3.25 Å) and four longer (3.30 Å) Th(1)-Ga(1) bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh(2) is bonded in a 9-coordinate geometry to three equivalent Th(1) and six equivalent Ga(1) atoms. All Rh(2)-Ga(1) bond lengths are 2.64 Å. In the second Rh site, Rh(1) is bonded in a 9-coordinate geometry to six equivalent Th(1) and three equivalent Ga(1) atoms. All Rh(1)-Ga(1) bond lengths are 2.83 Å. Ga(1) is bonded in a 4-coordinate geometry to six equivalent Th(1), two equivalent Rh(1), and two equivalent Rh(2) atoms.