GdLa(OCl)2 is Matlockite-derived structured and crystallizes in the tetragonal P4mm space group. Gd(1) is bonded in a 4-coordinate geometry to four equivalent O(1), one Cl(2), and four equivalent Cl(1) atoms. La(1) is bonded in a 9-coordinate geometry to four equivalent O(1), one Cl(1), and four equivalent Cl(2) atoms. O(1) is bonded to two equivalent Gd(1) and two equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa2Gd2 tetrahedra. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to four equivalent Gd(1) 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 La(1) atoms.
GdLa(OCl)2 is Matlockite-derived structured and crystallizes in the tetragonal P4mm space group. Gd(1) is bonded in a 4-coordinate geometry to four equivalent O(1), one Cl(2), and four equivalent Cl(1) atoms. All Gd(1)-O(1) bond lengths are 2.31 Å. The Gd(1)-Cl(2) bond length is 3.19 Å. All Gd(1)-Cl(1) bond lengths are 3.18 Å. La(1) is bonded in a 9-coordinate geometry to four equivalent O(1), one Cl(1), and four equivalent Cl(2) atoms. All La(1)-O(1) bond lengths are 2.38 Å. The La(1)-Cl(1) bond length is 3.16 Å. All La(1)-Cl(2) bond lengths are 3.17 Å. O(1) is bonded to two equivalent Gd(1) and two equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa2Gd2 tetrahedra. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to four equivalent Gd(1) 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 La(1) atoms.