MgLa2Co2Sb2(PbO6)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(12), one O(3), and one O(8) atom to form distorted MgO4 trigonal pyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-66°. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(2), one O(3), one O(6), one O(7), and one O(8) atom. In the second La site, La(2) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(4), one O(5), one O(7), and one O(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(4), one O(5), one O(7), and one O(9) atom to form CoO5 square pyramids that share  a cornercorner with one Sb(1)O6 octahedra and corners with four equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 22-41°. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(6), and one O(8) atom. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(4), one O(5), one O(8), and one O(9) atom. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(11), one O(2), one O(5), and one O(7) atom. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Co(1)O5 square pyramid,  a cornercorner with one Mg(1)O4 trigonal pyramid, and  an edgeedge with one Mg(1)O4 trigonal pyramid. In the second Sb site, Sb(2) is bonded to one O(1), one O(11), one O(3), one O(5), one O(7), and one O(9) atom to form SbO6 octahedra that share corners with four equivalent Co(1)O5 square pyramids and  a cornercorner with one Mg(1)O4 trigonal pyramid. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one La(2), one Co(2), one Pb(1), and one Sb(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one La(1), one Pb(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one La(1), and one Sb(2) atom. In the fourth O site, O(4) is bonded to one La(2), one Co(1), one Pb(1), and one Sb(1) atom to form distorted OLaCoSbPb tetrahedra that share  a cornercorner with one O(9)LaCoSbPb tetrahedra,  an edgeedge with one O(7)La2CoSbPb square pyramid, and  an edgeedge with one O(9)LaCoSbPb tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one La(2), one Co(1), one Pb(1), one Pb(2), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one La(1), one Co(2), and one Sb(1) atom. In the seventh O site, O(7) is bonded to one La(1), one La(2), one Co(1), one Pb(2), and one Sb(2) atom to form a mixture of distorted corner and edge-sharing OLa2CoSbPb square pyramids. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Mg(1), one La(1), one Co(2), one Pb(1), and one Sb(1) atom. In the ninth O site, O(9) is bonded to one La(2), one Co(1), one Pb(1), and one Sb(2) atom to form distorted OLaCoSbPb tetrahedra that share  a cornercorner with one O(7)La2CoSbPb square pyramid,  a cornercorner with one O(4)LaCoSbPb tetrahedra,  an edgeedge with one O(7)La2CoSbPb square pyramid, and  an edgeedge with one O(4)LaCoSbPb tetrahedra. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mg(1), one La(1), one Co(2), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one La(1), one Co(1), one Pb(2), and one Sb(2) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Mg(1), one La(2), one Pb(1), and one Sb(1) atom.
MgLa2Co2Sb2(PbO6)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(12), one O(3), and one O(8) atom to form distorted MgO4 trigonal pyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-66°. The Mg(1)-O(10) bond length is 2.13 Å. The Mg(1)-O(12) bond length is 1.98 Å. The Mg(1)-O(3) bond length is 1.96 Å. The Mg(1)-O(8) bond length is 2.01 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(2), one O(3), one O(6), one O(7), and one O(8) atom. The La(1)-O(10) bond length is 2.83 Å. The La(1)-O(11) bond length is 2.49 Å. The La(1)-O(2) bond length is 2.32 Å. The La(1)-O(3) bond length is 2.47 Å. The La(1)-O(6) bond length is 2.54 Å. The La(1)-O(7) bond length is 2.65 Å. The La(1)-O(8) bond length is 2.78 Å. In the second La site, La(2) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(4), one O(5), one O(7), and one O(9) atom. The La(2)-O(1) bond length is 2.43 Å. The La(2)-O(12) bond length is 2.44 Å. The La(2)-O(4) bond length is 2.41 Å. The La(2)-O(5) bond length is 2.47 Å. The La(2)-O(7) bond length is 2.60 Å. The La(2)-O(9) bond length is 2.54 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(4), one O(5), one O(7), and one O(9) atom to form CoO5 square pyramids that share  a cornercorner with one Sb(1)O6 octahedra and corners with four equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 22-41°. The Co(1)-O(11) bond length is 2.23 Å. The Co(1)-O(4) bond length is 2.27 Å. The Co(1)-O(5) bond length is 2.35 Å. The Co(1)-O(7) bond length is 2.30 Å. The Co(1)-O(9) bond length is 2.10 Å. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(6), and one O(8) atom. The Co(2)-O(1) bond length is 2.09 Å. The Co(2)-O(10) bond length is 2.07 Å. The Co(2)-O(6) bond length is 2.04 Å. The Co(2)-O(8) bond length is 2.60 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(4), one O(5), one O(8), and one O(9) atom. The Pb(1)-O(1) bond length is 2.63 Å. The Pb(1)-O(12) bond length is 2.79 Å. The Pb(1)-O(4) bond length is 2.47 Å. The Pb(1)-O(5) bond length is 2.82 Å. The Pb(1)-O(8) bond length is 2.65 Å. The Pb(1)-O(9) bond length is 2.53 Å. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(11), one O(2), one O(5), and one O(7) atom. The Pb(2)-O(11) bond length is 2.37 Å. The Pb(2)-O(2) bond length is 2.49 Å. The Pb(2)-O(5) bond length is 2.39 Å. The Pb(2)-O(7) bond length is 2.53 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Co(1)O5 square pyramid,  a cornercorner with one Mg(1)O4 trigonal pyramid, and  an edgeedge with one Mg(1)O4 trigonal pyramid. The Sb(1)-O(10) bond length is 2.08 Å. The Sb(1)-O(12) bond length is 2.03 Å. The Sb(1)-O(2) bond length is 2.01 Å. The Sb(1)-O(4) bond length is 2.02 Å. The Sb(1)-O(6) bond length is 2.02 Å. The Sb(1)-O(8) bond length is 2.07 Å. In the second Sb site, Sb(2) is bonded to one O(1), one O(11), one O(3), one O(5), one O(7), and one O(9) atom to form SbO6 octahedra that share corners with four equivalent Co(1)O5 square pyramids and  a cornercorner with one Mg(1)O4 trigonal pyramid. The Sb(2)-O(1) bond length is 2.03 Å. The Sb(2)-O(11) bond length is 2.08 Å. The Sb(2)-O(3) bond length is 2.02 Å. The Sb(2)-O(5) bond length is 2.05 Å. The Sb(2)-O(7) bond length is 2.05 Å. The Sb(2)-O(9) bond length is 2.01 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one La(2), one Co(2), one Pb(1), and one Sb(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one La(1), one Pb(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one La(1), and one Sb(2) atom. In the fourth O site, O(4) is bonded to one La(2), one Co(1), one Pb(1), and one Sb(1) atom to form distorted OLaCoSbPb tetrahedra that share  a cornercorner with one O(9)LaCoSbPb tetrahedra,  an edgeedge with one O(7)La2CoSbPb square pyramid, and  an edgeedge with one O(9)LaCoSbPb tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one La(2), one Co(1), one Pb(1), one Pb(2), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one La(1), one Co(2), and one Sb(1) atom. In the seventh O site, O(7) is bonded to one La(1), one La(2), one Co(1), one Pb(2), and one Sb(2) atom to form a mixture of distorted corner and edge-sharing OLa2CoSbPb square pyramids. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Mg(1), one La(1), one Co(2), one Pb(1), and one Sb(1) atom. In the ninth O site, O(9) is bonded to one La(2), one Co(1), one Pb(1), and one Sb(2) atom to form distorted OLaCoSbPb tetrahedra that share  a cornercorner with one O(7)La2CoSbPb square pyramid,  a cornercorner with one O(4)LaCoSbPb tetrahedra,  an edgeedge with one O(7)La2CoSbPb square pyramid, and  an edgeedge with one O(4)LaCoSbPb tetrahedra. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mg(1), one La(1), one Co(2), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one La(1), one Co(1), one Pb(2), and one Sb(2) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Mg(1), one La(2), one Pb(1), and one Sb(1) atom.