MgLa2Fe2(TeO6)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form MgO6 octahedra that share edges with three equivalent Fe(2)O6 octahedra, edges with three equivalent Te(2)O6 octahedra,  a faceface with one La(1)O6 octahedra, and  a faceface with one La(2)O6 octahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-58°. In the second La site, La(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-59°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-59°. In the second Fe site, Fe(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, and edges with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-50°. In the second Te site, Te(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, and edges with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-43°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(2), one Fe(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(2), one Fe(2), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(2), one Fe(2), and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one Fe(2), and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one Fe(2), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom.
MgLa2Fe2(TeO6)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form MgO6 octahedra that share edges with three equivalent Fe(2)O6 octahedra, edges with three equivalent Te(2)O6 octahedra,  a faceface with one La(1)O6 octahedra, and  a faceface with one La(2)O6 octahedra. The Mg(1)-O(4) bond length is 2.09 Å. The Mg(1)-O(5) bond length is 2.09 Å. The Mg(1)-O(6) bond length is 2.10 Å. The Mg(1)-O(7) bond length is 2.09 Å. The Mg(1)-O(8) bond length is 2.09 Å. The Mg(1)-O(9) bond length is 2.10 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-58°. The La(1)-O(1) bond length is 2.33 Å. The La(1)-O(2) bond length is 2.32 Å. The La(1)-O(3) bond length is 2.30 Å. The La(1)-O(7) bond length is 2.71 Å. The La(1)-O(8) bond length is 2.70 Å. The La(1)-O(9) bond length is 2.73 Å. In the second La site, La(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-59°. The La(2)-O(10) bond length is 2.31 Å. The La(2)-O(11) bond length is 2.33 Å. The La(2)-O(12) bond length is 2.31 Å. The La(2)-O(4) bond length is 2.73 Å. The La(2)-O(5) bond length is 2.70 Å. The La(2)-O(6) bond length is 2.72 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-59°. The Fe(1)-O(1) bond length is 2.14 Å. The Fe(1)-O(10) bond length is 2.13 Å. The Fe(1)-O(11) bond length is 2.11 Å. The Fe(1)-O(12) bond length is 2.17 Å. The Fe(1)-O(2) bond length is 2.12 Å. The Fe(1)-O(3) bond length is 2.16 Å. In the second Fe site, Fe(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, and edges with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. The Fe(2)-O(4) bond length is 2.19 Å. The Fe(2)-O(5) bond length is 2.21 Å. The Fe(2)-O(6) bond length is 2.17 Å. The Fe(2)-O(7) bond length is 2.19 Å. The Fe(2)-O(8) bond length is 2.20 Å. The Fe(2)-O(9) bond length is 2.16 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-50°. The Te(1)-O(1) bond length is 1.95 Å. The Te(1)-O(10) bond length is 1.95 Å. The Te(1)-O(11) bond length is 1.96 Å. The Te(1)-O(12) bond length is 1.95 Å. The Te(1)-O(2) bond length is 1.95 Å. The Te(1)-O(3) bond length is 1.95 Å. In the second Te site, Te(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, and edges with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-43°. The Te(2)-O(4) bond length is 1.98 Å. The Te(2)-O(5) bond length is 1.98 Å. The Te(2)-O(6) bond length is 1.98 Å. The Te(2)-O(7) bond length is 1.98 Å. The Te(2)-O(8) bond length is 1.98 Å. The Te(2)-O(9) bond length is 1.98 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(2), one Fe(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(2), one Fe(2), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(2), one Fe(2), and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one Fe(2), and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one Fe(2), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one La(1), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom.