GdLa3(OCl)4 is Matlockite-derived structured and crystallizes in the orthorhombic Pmm2 space group. Gd(1) is bonded in a 4-coordinate geometry to two equivalent O(1), two equivalent O(3), one Cl(1), and four equivalent Cl(3) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(2), two equivalent O(3), one Cl(2), and four equivalent Cl(3) atoms. In the second La site, La(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), two equivalent O(3), one Cl(3), two equivalent Cl(1), and two equivalent Cl(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(1) and two equivalent La(2) atoms to form OLa2Gd2 tetrahedra that share corners with two equivalent O(1)La2Gd2 tetrahedra, corners with two equivalent O(2)La4 tetrahedra, and edges with four equivalent O(3)La3Gd tetrahedra. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent La(2) atoms to form OLa4 tetrahedra that share corners with two equivalent O(1)La2Gd2 tetrahedra, corners with two equivalent O(2)La4 tetrahedra, and edges with four equivalent O(3)La3Gd tetrahedra. In the third O site, O(3) is bonded to one Gd(1), one La(1), and two equivalent La(2) atoms to form OLa3Gd tetrahedra that share corners with four equivalent O(3)La3Gd tetrahedra, edges with two equivalent O(1)La2Gd2 tetrahedra, and edges with two equivalent O(2)La4 tetrahedra. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to one Gd(1) and four equivalent La(2) atoms. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one La(1) and four equivalent La(2) atoms. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent Gd(1), one La(2), and two equivalent La(1) atoms.
GdLa3(OCl)4 is Matlockite-derived structured and crystallizes in the orthorhombic Pmm2 space group. Gd(1) is bonded in a 4-coordinate geometry to two equivalent O(1), two equivalent O(3), one Cl(1), and four equivalent Cl(3) atoms. Both Gd(1)-O(1) bond lengths are 2.32 Å. Both Gd(1)-O(3) bond lengths are 2.29 Å. The Gd(1)-Cl(1) bond length is 3.23 Å. All Gd(1)-Cl(3) bond lengths are 3.22 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(2), two equivalent O(3), one Cl(2), and four equivalent Cl(3) atoms. Both La(1)-O(2) bond lengths are 2.39 Å. Both La(1)-O(3) bond lengths are 2.42 Å. The La(1)-Cl(2) bond length is 3.16 Å. All La(1)-Cl(3) bond lengths are 3.20 Å. In the second La site, La(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), two equivalent O(3), one Cl(3), two equivalent Cl(1), and two equivalent Cl(2) atoms. The La(2)-O(1) bond length is 2.39 Å. The La(2)-O(2) bond length is 2.39 Å. Both La(2)-O(3) bond lengths are 2.39 Å. The La(2)-Cl(3) bond length is 3.18 Å. Both La(2)-Cl(1) bond lengths are 3.20 Å. Both La(2)-Cl(2) bond lengths are 3.20 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(1) and two equivalent La(2) atoms to form OLa2Gd2 tetrahedra that share corners with two equivalent O(1)La2Gd2 tetrahedra, corners with two equivalent O(2)La4 tetrahedra, and edges with four equivalent O(3)La3Gd tetrahedra. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent La(2) atoms to form OLa4 tetrahedra that share corners with two equivalent O(1)La2Gd2 tetrahedra, corners with two equivalent O(2)La4 tetrahedra, and edges with four equivalent O(3)La3Gd tetrahedra. In the third O site, O(3) is bonded to one Gd(1), one La(1), and two equivalent La(2) atoms to form OLa3Gd tetrahedra that share corners with four equivalent O(3)La3Gd tetrahedra, edges with two equivalent O(1)La2Gd2 tetrahedra, and edges with two equivalent O(2)La4 tetrahedra. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to one Gd(1) and four equivalent La(2) atoms. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one La(1) and four equivalent La(2) atoms. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent Gd(1), one La(2), and two equivalent La(1) atoms.