GdLa3(OBr)4 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 Br(1), and four equivalent Br(3) atoms. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to four equivalent O(2), one Br(2), and four equivalent Br(4) atoms. In the second La site, La(2) is bonded in a 4-coordinate geometry to four equivalent O(2), one Br(3), and four equivalent Br(1) atoms. In the third La site, La(3) is bonded in a 4-coordinate geometry to four equivalent O(1), one Br(4), and four equivalent Br(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(1) and two equivalent La(3) atoms to form a mixture of edge and corner-sharing OLa2Gd2 tetrahedra. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent La(2) atoms to form a mixture of edge and corner-sharing OLa4 tetrahedra. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a 5-coordinate geometry to one Gd(1) and four equivalent La(2) atoms. In the second Br site, Br(2) is bonded in a 5-coordinate geometry to one La(1) and four equivalent La(3) atoms. In the third Br site, Br(3) is bonded in a 5-coordinate geometry to four equivalent Gd(1) and one La(2) atom. In the fourth Br site, Br(4) is bonded in a 5-coordinate geometry to one La(3) and four equivalent La(1) atoms.
GdLa3(OBr)4 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 Br(1), and four equivalent Br(3) atoms. All Gd(1)-O(1) bond lengths are 2.33 Å. The Gd(1)-Br(1) bond length is 3.76 Å. All Gd(1)-Br(3) bond lengths are 3.31 Å. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to four equivalent O(2), one Br(2), and four equivalent Br(4) atoms. All La(1)-O(2) bond lengths are 2.39 Å. The La(1)-Br(2) bond length is 3.72 Å. All La(1)-Br(4) bond lengths are 3.30 Å. In the second La site, La(2) is bonded in a 4-coordinate geometry to four equivalent O(2), one Br(3), and four equivalent Br(1) atoms. All La(2)-O(2) bond lengths are 2.39 Å. The La(2)-Br(3) bond length is 3.73 Å. All La(2)-Br(1) bond lengths are 3.29 Å. In the third La site, La(3) is bonded in a 4-coordinate geometry to four equivalent O(1), one Br(4), and four equivalent Br(2) atoms. All La(3)-O(1) bond lengths are 2.39 Å. The La(3)-Br(4) bond length is 3.71 Å. All La(3)-Br(2) bond lengths are 3.29 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(1) and two equivalent La(3) atoms to form a mixture of edge and corner-sharing OLa2Gd2 tetrahedra. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent La(2) atoms to form a mixture of edge and corner-sharing OLa4 tetrahedra. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a 5-coordinate geometry to one Gd(1) and four equivalent La(2) atoms. In the second Br site, Br(2) is bonded in a 5-coordinate geometry to one La(1) and four equivalent La(3) atoms. In the third Br site, Br(3) is bonded in a 5-coordinate geometry to four equivalent Gd(1) and one La(2) atom. In the fourth Br site, Br(4) is bonded in a 5-coordinate geometry to one La(3) and four equivalent La(1) atoms.