Gd3La(OCl)4 is Matlockite-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 4-coordinate geometry to two equivalent O(2), two equivalent O(3), one Cl(2), and four equivalent Cl(3) atoms. In the second Gd site, Gd(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. La(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(3), one Cl(1), and four equivalent Cl(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(2) and two equivalent La(1) atoms to form OLa2Gd2 tetrahedra that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(1)La2Gd2 tetrahedra, and edges with four equivalent O(3)LaGd3 tetrahedra. In the second O site, O(2) is bonded to two equivalent Gd(1) and two equivalent Gd(2) atoms to form OGd4 tetrahedra that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(1)La2Gd2 tetrahedra, and edges with four equivalent O(3)LaGd3 tetrahedra. In the third O site, O(3) is bonded to one Gd(1), two equivalent Gd(2), and one La(1) atom to form OLaGd3 tetrahedra that share corners with four equivalent O(3)LaGd3 tetrahedra, edges with two equivalent O(2)Gd4 tetrahedra, and edges with two equivalent O(1)La2Gd2 tetrahedra. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to four equivalent Gd(2) and one La(1) atom. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one Gd(1) and four equivalent Gd(2) atoms. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to one Gd(2), two equivalent Gd(1), and two equivalent La(1) atoms.
Gd3La(OCl)4 is Matlockite-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 4-coordinate geometry to two equivalent O(2), two equivalent O(3), one Cl(2), and four equivalent Cl(3) atoms. Both Gd(1)-O(2) bond lengths are 2.30 Å. Both Gd(1)-O(3) bond lengths are 2.28 Å. The Gd(1)-Cl(2) bond length is 3.25 Å. All Gd(1)-Cl(3) bond lengths are 3.12 Å. In the second Gd site, Gd(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 Gd(2)-O(1) bond length is 2.29 Å. The Gd(2)-O(2) bond length is 2.30 Å. Both Gd(2)-O(3) bond lengths are 2.30 Å. The Gd(2)-Cl(3) bond length is 3.20 Å. Both Gd(2)-Cl(1) bond lengths are 3.14 Å. Both Gd(2)-Cl(2) bond lengths are 3.13 Å. La(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(3), one Cl(1), and four equivalent Cl(3) atoms. Both La(1)-O(1) bond lengths are 2.37 Å. Both La(1)-O(3) bond lengths are 2.39 Å. The La(1)-Cl(1) bond length is 3.12 Å. All La(1)-Cl(3) bond lengths are 3.15 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(2) and two equivalent La(1) atoms to form OLa2Gd2 tetrahedra that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(1)La2Gd2 tetrahedra, and edges with four equivalent O(3)LaGd3 tetrahedra. In the second O site, O(2) is bonded to two equivalent Gd(1) and two equivalent Gd(2) atoms to form OGd4 tetrahedra that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(1)La2Gd2 tetrahedra, and edges with four equivalent O(3)LaGd3 tetrahedra. In the third O site, O(3) is bonded to one Gd(1), two equivalent Gd(2), and one La(1) atom to form OLaGd3 tetrahedra that share corners with four equivalent O(3)LaGd3 tetrahedra, edges with two equivalent O(2)Gd4 tetrahedra, and edges with two equivalent O(1)La2Gd2 tetrahedra. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to four equivalent Gd(2) and one La(1) atom. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one Gd(1) and four equivalent Gd(2) atoms. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to one Gd(2), two equivalent Gd(1), and two equivalent La(1) atoms.