La3ReO8 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(6), two equivalent O(1), and two equivalent O(2) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to one O(3), one O(5), two equivalent O(2), and four equivalent O(1) atoms. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. Re(1) is bonded in an octahedral geometry to one O(3), one O(4), one O(5), one O(6), and two equivalent O(2) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded to one La(1), one La(3), and two equivalent La(2) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one La(1), one La(2), one La(3), and one Re(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one La(1), one La(2), and one Re(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one La(1), one La(3), and one Re(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one La(2), one La(3), and one Re(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one La(1), one La(3), and one Re(1) atom.
La3ReO8 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(6), two equivalent O(1), and two equivalent O(2) atoms. The La(1)-O(3) bond length is 2.51 Å. The La(1)-O(4) bond length is 2.47 Å. The La(1)-O(6) bond length is 2.68 Å. Both La(1)-O(1) bond lengths are 2.33 Å. Both La(1)-O(2) bond lengths are 2.53 Å. In the second La site, La(2) is bonded in a 8-coordinate geometry to one O(3), one O(5), two equivalent O(2), and four equivalent O(1) atoms. The La(2)-O(3) bond length is 2.67 Å. The La(2)-O(5) bond length is 2.66 Å. Both La(2)-O(2) bond lengths are 2.80 Å. All La(2)-O(1) bond lengths are 2.47 Å. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. The La(3)-O(4) bond length is 2.47 Å. The La(3)-O(5) bond length is 2.51 Å. The La(3)-O(6) bond length is 2.68 Å. Both La(3)-O(1) bond lengths are 2.33 Å. Both La(3)-O(2) bond lengths are 2.52 Å. Re(1) is bonded in an octahedral geometry to one O(3), one O(4), one O(5), one O(6), and two equivalent O(2) atoms. The Re(1)-O(3) bond length is 1.90 Å. The Re(1)-O(4) bond length is 1.96 Å. The Re(1)-O(5) bond length is 1.90 Å. The Re(1)-O(6) bond length is 1.83 Å. Both Re(1)-O(2) bond lengths are 1.87 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one La(1), one La(3), and two equivalent La(2) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one La(1), one La(2), one La(3), and one Re(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one La(1), one La(2), and one Re(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one La(1), one La(3), and one Re(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one La(2), one La(3), and one Re(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one La(1), one La(3), and one Re(1) atom.