Ba2MgLaSbO6 crystallizes in the triclinic P1 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(6) atom. In the second Ba site, Ba(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(4), and one O(6) atom. La(1) is bonded in a distorted octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Sb(1) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(4), and one O(5) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Ba(1), one Ba(2), one La(1), and one Sb(1) atom. In the second O site, O(2) is bonded to one Ba(1), one Ba(2), one Mg(1), and one La(1) atom to form a mixture of distorted edge and corner-sharing OBa2LaMg tetrahedra. In the third O site, O(3) is bonded to one Ba(1), one Ba(2), one Mg(1), and one La(1) atom to form a mixture of distorted edge and corner-sharing OBa2LaMg tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(2), one Mg(1), one La(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ba(1), one La(1), and one Sb(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Mg(1), and one La(1) atom.
Ba2MgLaSbO6 crystallizes in the triclinic P1 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(6) atom. The Ba(1)-O(1) bond length is 2.73 Å. The Ba(1)-O(2) bond length is 2.57 Å. The Ba(1)-O(3) bond length is 2.62 Å. The Ba(1)-O(5) bond length is 2.90 Å. The Ba(1)-O(6) bond length is 2.72 Å. In the second Ba site, Ba(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. The Ba(2)-O(1) bond length is 2.89 Å. The Ba(2)-O(2) bond length is 2.60 Å. The Ba(2)-O(3) bond length is 2.56 Å. The Ba(2)-O(4) bond length is 3.04 Å. The Ba(2)-O(6) bond length is 2.56 Å. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(4), and one O(6) atom. The Mg(1)-O(2) bond length is 1.99 Å. The Mg(1)-O(3) bond length is 2.02 Å. The Mg(1)-O(4) bond length is 2.04 Å. The Mg(1)-O(6) bond length is 2.03 Å. La(1) is bonded in a distorted octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The La(1)-O(1) bond length is 2.51 Å. The La(1)-O(2) bond length is 2.53 Å. The La(1)-O(3) bond length is 2.37 Å. The La(1)-O(4) bond length is 2.72 Å. The La(1)-O(5) bond length is 2.45 Å. The La(1)-O(6) bond length is 2.31 Å. Sb(1) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(4), and one O(5) atom. The Sb(1)-O(1) bond length is 1.98 Å. The Sb(1)-O(4) bond length is 2.07 Å. The Sb(1)-O(5) bond length is 2.00 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Ba(1), one Ba(2), one La(1), and one Sb(1) atom. In the second O site, O(2) is bonded to one Ba(1), one Ba(2), one Mg(1), and one La(1) atom to form a mixture of distorted edge and corner-sharing OBa2LaMg tetrahedra. In the third O site, O(3) is bonded to one Ba(1), one Ba(2), one Mg(1), and one La(1) atom to form a mixture of distorted edge and corner-sharing OBa2LaMg tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(2), one Mg(1), one La(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ba(1), one La(1), and one Sb(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Mg(1), and one La(1) atom.