Ga2Te3 crystallizes in the trigonal R-3m space group. Ga(1) is bonded to three equivalent Ga(1) and three equivalent Te(2) atoms to form distorted GaGa3Te3 octahedra that share corners with three equivalent Te(2)Ga3Te3 octahedra, corners with three equivalent Te(1)Te6 octahedra, edges with three equivalent Te(2)Ga3Te3 octahedra, edges with three equivalent Te(1)Te6 octahedra, and edges with six equivalent Ga(1)Ga3Te3 octahedra. The corner-sharing octahedral tilt angles are 6°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to six equivalent Te(2) atoms to form TeTe6 octahedra that share corners with six equivalent Ga(1)Ga3Te3 octahedra, edges with six equivalent Ga(1)Ga3Te3 octahedra, and edges with six equivalent Te(1)Te6 octahedra. The corner-sharing octahedral tilt angles are 6°. In the second Te site, Te(2) is bonded to three equivalent Ga(1) and three equivalent Te(1) atoms to form distorted TeGa3Te3 octahedra that share corners with three equivalent Ga(1)Ga3Te3 octahedra, corners with three equivalent Te(2)Ga3Te3 octahedra, edges with three equivalent Ga(1)Ga3Te3 octahedra, and edges with nine equivalent Te(2)Ga3Te3 octahedra. The corner-sharing octahedral tilt angles range from 0-6°.
Ga2Te3 crystallizes in the trigonal R-3m space group. Ga(1) is bonded to three equivalent Ga(1) and three equivalent Te(2) atoms to form distorted GaGa3Te3 octahedra that share corners with three equivalent Te(2)Ga3Te3 octahedra, corners with three equivalent Te(1)Te6 octahedra, edges with three equivalent Te(2)Ga3Te3 octahedra, edges with three equivalent Te(1)Te6 octahedra, and edges with six equivalent Ga(1)Ga3Te3 octahedra. The corner-sharing octahedral tilt angles are 6°. All Ga(1)-Ga(1) bond lengths are 2.80 Å. All Ga(1)-Te(2) bond lengths are 2.97 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to six equivalent Te(2) atoms to form TeTe6 octahedra that share corners with six equivalent Ga(1)Ga3Te3 octahedra, edges with six equivalent Ga(1)Ga3Te3 octahedra, and edges with six equivalent Te(1)Te6 octahedra. The corner-sharing octahedral tilt angles are 6°. All Te(1)-Te(2) bond lengths are 3.21 Å. In the second Te site, Te(2) is bonded to three equivalent Ga(1) and three equivalent Te(1) atoms to form distorted TeGa3Te3 octahedra that share corners with three equivalent Ga(1)Ga3Te3 octahedra, corners with three equivalent Te(2)Ga3Te3 octahedra, edges with three equivalent Ga(1)Ga3Te3 octahedra, and edges with nine equivalent Te(2)Ga3Te3 octahedra. The corner-sharing octahedral tilt angles range from 0-6°.