BaLaGa3O7 crystallizes in the orthorhombic Cmm2 space group. Ba(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. La(1) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(1), one O(6), and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. In the third Ga site, Ga(3) is bonded to one O(2), one O(5), and two equivalent O(3) atoms to form corner-sharing GaO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Ga(3) atoms. In the second O site, O(6) is bonded to two equivalent La(1) and two equivalent Ga(2) atoms to form a mixture of edge and corner-sharing OLa2Ga2 tetrahedra. In the third O site, O(1) is bonded to one Ba(1), two equivalent La(1), and one Ga(2) atom to form OBaLa2Ga tetrahedra that share  a cornercorner with one O(6)La2Ga2 tetrahedra,  an edgeedge with one O(1)BaLa2Ga tetrahedra, and  an edgeedge with one O(6)La2Ga2 tetrahedra. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one La(1), and one Ga(3) atom. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to one Ba(1), one La(1), one Ga(1), and one Ga(3) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(1), one La(1), one Ga(1), and one Ga(2) atom.
BaLaGa3O7 crystallizes in the orthorhombic Cmm2 space group. Ba(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. The Ba(1)-O(1) bond length is 2.75 Å. The Ba(1)-O(5) bond length is 2.72 Å. Both Ba(1)-O(2) bond lengths are 2.87 Å. Both Ba(1)-O(3) bond lengths are 3.04 Å. Both Ba(1)-O(4) bond lengths are 2.72 Å. La(1) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. The La(1)-O(2) bond length is 2.37 Å. The La(1)-O(6) bond length is 2.51 Å. Both La(1)-O(1) bond lengths are 2.58 Å. Both La(1)-O(3) bond lengths are 2.54 Å. Both La(1)-O(4) bond lengths are 3.01 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. Both Ga(1)-O(3) bond lengths are 1.89 Å. Both Ga(1)-O(4) bond lengths are 1.86 Å. In the second Ga site, Ga(2) is bonded to one O(1), one O(6), and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. The Ga(2)-O(1) bond length is 1.83 Å. The Ga(2)-O(6) bond length is 1.88 Å. Both Ga(2)-O(4) bond lengths are 1.88 Å. In the third Ga site, Ga(3) is bonded to one O(2), one O(5), and two equivalent O(3) atoms to form corner-sharing GaO4 tetrahedra. The Ga(3)-O(2) bond length is 1.82 Å. The Ga(3)-O(5) bond length is 1.85 Å. Both Ga(3)-O(3) bond lengths are 1.91 Å. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Ga(3) atoms. In the second O site, O(6) is bonded to two equivalent La(1) and two equivalent Ga(2) atoms to form a mixture of edge and corner-sharing OLa2Ga2 tetrahedra. In the third O site, O(1) is bonded to one Ba(1), two equivalent La(1), and one Ga(2) atom to form OBaLa2Ga tetrahedra that share  a cornercorner with one O(6)La2Ga2 tetrahedra,  an edgeedge with one O(1)BaLa2Ga tetrahedra, and  an edgeedge with one O(6)La2Ga2 tetrahedra. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one La(1), and one Ga(3) atom. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to one Ba(1), one La(1), one Ga(1), and one Ga(3) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(1), one La(1), one Ga(1), and one Ga(2) atom.