Pb4Ga4GeS12 crystallizes in the tetragonal P-42_1c space group. Ga(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form GaS4 tetrahedra that share  a cornercorner with one Ge(1)S4 tetrahedra and corners with two equivalent Ga(1)S4 tetrahedra. Pb(1) is bonded in a 5-coordinate geometry to one S(2), one S(3), and three equivalent S(1) atoms. Ge(1) is bonded to four equivalent S(2) atoms to form GeS4 tetrahedra that share corners with four equivalent Ga(1)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(3) is bonded in a distorted water-like geometry to two equivalent Ga(1) and one Pb(1) atom. In the second S site, S(1) is bonded in a distorted single-bond geometry to one Ga(1) and three equivalent Pb(1) atoms. In the third S site, S(2) is bonded in a water-like geometry to one Ga(1), one Pb(1), and one Ge(1) atom.
Pb4Ga4GeS12 crystallizes in the tetragonal P-42_1c space group. Ga(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form GaS4 tetrahedra that share  a cornercorner with one Ge(1)S4 tetrahedra and corners with two equivalent Ga(1)S4 tetrahedra. The Ga(1)-S(1) bond length is 2.30 Å. The Ga(1)-S(2) bond length is 2.29 Å. Both Ga(1)-S(3) bond lengths are 2.30 Å. Pb(1) is bonded in a 5-coordinate geometry to one S(2), one S(3), and three equivalent S(1) atoms. The Pb(1)-S(2) bond length is 3.21 Å. The Pb(1)-S(3) bond length is 3.01 Å. There are a spread of Pb(1)-S(1) bond distances ranging from 2.85-3.13 Å. Ge(1) is bonded to four equivalent S(2) atoms to form GeS4 tetrahedra that share corners with four equivalent Ga(1)S4 tetrahedra. All Ge(1)-S(2) bond lengths are 2.25 Å. There are three inequivalent S sites. In the first S site, S(3) is bonded in a distorted water-like geometry to two equivalent Ga(1) and one Pb(1) atom. In the second S site, S(1) is bonded in a distorted single-bond geometry to one Ga(1) and three equivalent Pb(1) atoms. In the third S site, S(2) is bonded in a water-like geometry to one Ga(1), one Pb(1), and one Ge(1) atom.