MgLa2Co2Sb2(PbO6)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(2), one O(4), one O(5), one O(7), and one O(9) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the second La site, La(2) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(4), one O(5), and one O(7) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to one O(11), one O(4), one O(7), and one O(9) atom. In the second Co site, Co(2) is bonded to one O(10), one O(12), one O(3), one O(6), and one O(8) atom to form CoO5 trigonal bipyramids that share  a cornercorner with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 39°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(6), and one O(8) atom. In the second Pb site, Pb(2) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 3-coordinate geometry to one O(10), one O(2), one O(6), and one O(8) atom. 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  a cornercorner with one Co(2)O5 trigonal bipyramid. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one La(2), one Pb(1), and one Sb(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one La(1), one Pb(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted tetrahedral geometry to one La(1), one Co(2), one Pb(2), and one Sb(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one La(2), and one Co(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one La(2), one Pb(2), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one La(1), one Co(2), one Pb(1), one Pb(2), and one Sb(1) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Mg(1), one La(1), one La(2), one Co(1), one Pb(2), and one Sb(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one La(1), one Co(2), one Pb(1), and one Sb(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mg(1), one La(1), one Co(1), and one Sb(2) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one La(1), one Co(2), one Pb(2), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate 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 distorted trigonal non-coplanar geometry to one La(2), one Co(2), and one Pb(1) atom.
MgLa2Co2Sb2(PbO6)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(2), one O(4), one O(5), one O(7), and one O(9) atom. The Mg(1)-O(2) bond length is 2.09 Å. The Mg(1)-O(4) bond length is 2.04 Å. The Mg(1)-O(5) bond length is 2.03 Å. The Mg(1)-O(7) bond length is 2.65 Å. The Mg(1)-O(9) bond length is 2.06 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. The La(1)-O(10) bond length is 2.55 Å. The La(1)-O(11) bond length is 2.48 Å. The La(1)-O(2) bond length is 2.55 Å. The La(1)-O(3) bond length is 2.51 Å. The La(1)-O(6) bond length is 2.36 Å. The La(1)-O(7) bond length is 2.68 Å. The La(1)-O(8) bond length is 2.50 Å. The La(1)-O(9) bond length is 2.97 Å. In the second La site, La(2) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(4), one O(5), and one O(7) atom. The La(2)-O(1) bond length is 2.37 Å. The La(2)-O(12) bond length is 2.28 Å. The La(2)-O(4) bond length is 2.32 Å. The La(2)-O(5) bond length is 2.51 Å. The La(2)-O(7) bond length is 2.83 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to one O(11), one O(4), one O(7), and one O(9) atom. The Co(1)-O(11) bond length is 2.00 Å. The Co(1)-O(4) bond length is 1.91 Å. The Co(1)-O(7) bond length is 2.25 Å. The Co(1)-O(9) bond length is 2.02 Å. In the second Co site, Co(2) is bonded to one O(10), one O(12), one O(3), one O(6), and one O(8) atom to form CoO5 trigonal bipyramids that share  a cornercorner with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 39°. The Co(2)-O(10) bond length is 2.10 Å. The Co(2)-O(12) bond length is 1.97 Å. The Co(2)-O(3) bond length is 2.09 Å. The Co(2)-O(6) bond length is 2.03 Å. The Co(2)-O(8) bond length is 2.23 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(6), and one O(8) atom. The Pb(1)-O(1) bond length is 2.59 Å. The Pb(1)-O(12) bond length is 2.22 Å. The Pb(1)-O(6) bond length is 2.35 Å. The Pb(1)-O(8) bond length is 2.66 Å. In the second Pb site, Pb(2) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. The Pb(2)-O(10) bond length is 2.50 Å. The Pb(2)-O(11) bond length is 2.86 Å. The Pb(2)-O(2) bond length is 2.74 Å. The Pb(2)-O(3) bond length is 2.49 Å. The Pb(2)-O(5) bond length is 2.80 Å. The Pb(2)-O(6) bond length is 2.69 Å. The Pb(2)-O(7) bond length is 2.63 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 3-coordinate geometry to one O(10), one O(2), one O(6), and one O(8) atom. The Sb(1)-O(10) bond length is 2.03 Å. The Sb(1)-O(2) bond length is 2.07 Å. The Sb(1)-O(6) bond length is 2.73 Å. The Sb(1)-O(8) bond length is 2.03 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  a cornercorner with one Co(2)O5 trigonal bipyramid. The Sb(2)-O(1) bond length is 2.00 Å. The Sb(2)-O(11) bond length is 2.04 Å. The Sb(2)-O(3) bond length is 2.02 Å. The Sb(2)-O(5) bond length is 1.99 Å. The Sb(2)-O(7) bond length is 2.05 Å. The Sb(2)-O(9) bond length is 2.10 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one La(2), one Pb(1), and one Sb(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one La(1), one Pb(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted tetrahedral geometry to one La(1), one Co(2), one Pb(2), and one Sb(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one La(2), and one Co(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one La(2), one Pb(2), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one La(1), one Co(2), one Pb(1), one Pb(2), and one Sb(1) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Mg(1), one La(1), one La(2), one Co(1), one Pb(2), and one Sb(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one La(1), one Co(2), one Pb(1), and one Sb(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mg(1), one La(1), one Co(1), and one Sb(2) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one La(1), one Co(2), one Pb(2), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate 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 distorted trigonal non-coplanar geometry to one La(2), one Co(2), and one Pb(1) atom.