ZnGa4S7 crystallizes in the orthorhombic Pmn2_1 space group. Zn(1) is bonded in a distorted trigonal non-coplanar geometry to one S(4) and two equivalent S(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form corner-sharing GaS4 tetrahedra. In the second Ga site, Ga(2) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form corner-sharing GaS4 tetrahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Ga(1), and one Ga(2) atom. In the second S site, S(2) is bonded in a water-like geometry to one Ga(1) and one Ga(2) atom. In the third S site, S(3) is bonded in a trigonal non-coplanar geometry to one Ga(1) and two equivalent Ga(2) atoms. In the fourth S site, S(4) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1) and two equivalent Ga(1) atoms.
ZnGa4S7 crystallizes in the orthorhombic Pmn2_1 space group. Zn(1) is bonded in a distorted trigonal non-coplanar geometry to one S(4) and two equivalent S(1) atoms. The Zn(1)-S(4) bond length is 2.38 Å. Both Zn(1)-S(1) bond lengths are 2.28 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form corner-sharing GaS4 tetrahedra. The Ga(1)-S(1) bond length is 2.37 Å. The Ga(1)-S(2) bond length is 2.23 Å. The Ga(1)-S(3) bond length is 2.35 Å. The Ga(1)-S(4) bond length is 2.35 Å. In the second Ga site, Ga(2) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form corner-sharing GaS4 tetrahedra. The Ga(2)-S(1) bond length is 2.32 Å. The Ga(2)-S(2) bond length is 2.23 Å. There is one shorter (2.33 Å) and one longer (2.36 Å) Ga(2)-S(3) bond length. There are four inequivalent S sites. In the first S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Ga(1), and one Ga(2) atom. In the second S site, S(2) is bonded in a water-like geometry to one Ga(1) and one Ga(2) atom. In the third S site, S(3) is bonded in a trigonal non-coplanar geometry to one Ga(1) and two equivalent Ga(2) atoms. In the fourth S site, S(4) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1) and two equivalent Ga(1) atoms.