Ga2Ge(MoS2)8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to one S(3), two equivalent S(1), and two equivalent S(4) atoms. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one S(4), two equivalent S(3), and three equivalent S(2) atoms. Ga(1) is bonded in a tetrahedral geometry to two equivalent S(1) and two equivalent S(2) atoms. Ge(1) is bonded in a 4-coordinate geometry to four equivalent S(1) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Mo(1), one Ga(1), and one Ge(1) atom to form distorted SGaGeMo2 tetrahedra that share corners with two equivalent S(2)GaMo3 tetrahedra, corners with three equivalent S(1)GaGeMo2 tetrahedra, and  a faceface with one S(1)GaGeMo2 tetrahedra. In the second S site, S(2) is bonded to three equivalent Mo(2) and one Ga(1) atom to form SGaMo3 tetrahedra that share  a cornercorner with one S(2)GaMo3 tetrahedra, corners with two equivalent S(1)GaGeMo2 tetrahedra, and edges with three equivalent S(2)GaMo3 tetrahedra. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Mo(1) and two equivalent Mo(2) atoms. In the fourth S site, S(4) is bonded in a 3-coordinate geometry to one Mo(2) and two equivalent Mo(1) atoms.
Ga2Ge(MoS2)8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to one S(3), two equivalent S(1), and two equivalent S(4) atoms. The Mo(1)-S(3) bond length is 2.32 Å. Both Mo(1)-S(1) bond lengths are 2.60 Å. Both Mo(1)-S(4) bond lengths are 2.36 Å. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one S(4), two equivalent S(3), and three equivalent S(2) atoms. The Mo(2)-S(4) bond length is 2.37 Å. Both Mo(2)-S(3) bond lengths are 2.36 Å. There are two shorter (2.58 Å) and one longer (2.62 Å) Mo(2)-S(2) bond length. Ga(1) is bonded in a tetrahedral geometry to two equivalent S(1) and two equivalent S(2) atoms. Both Ga(1)-S(1) bond lengths are 2.33 Å. Both Ga(1)-S(2) bond lengths are 2.31 Å. Ge(1) is bonded in a 4-coordinate geometry to four equivalent S(1) atoms. All Ge(1)-S(1) bond lengths are 2.59 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Mo(1), one Ga(1), and one Ge(1) atom to form distorted SGaGeMo2 tetrahedra that share corners with two equivalent S(2)GaMo3 tetrahedra, corners with three equivalent S(1)GaGeMo2 tetrahedra, and  a faceface with one S(1)GaGeMo2 tetrahedra. In the second S site, S(2) is bonded to three equivalent Mo(2) and one Ga(1) atom to form SGaMo3 tetrahedra that share  a cornercorner with one S(2)GaMo3 tetrahedra, corners with two equivalent S(1)GaGeMo2 tetrahedra, and edges with three equivalent S(2)GaMo3 tetrahedra. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Mo(1) and two equivalent Mo(2) atoms. In the fourth S site, S(4) is bonded in a 3-coordinate geometry to one Mo(2) and two equivalent Mo(1) atoms.