MgV2Bi2(PbO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one Pb(1), one O(1), one O(10), one O(2), one O(6), and one O(7) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(4), one O(6), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid. In the second V site, V(2) is bonded to one O(3), one O(5), one O(7), and one O(9) atom to form VO4 tetrahedra that share corners with two equivalent Bi(1)O5 square pyramids. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to one Mg(1), one O(3), 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 distorted T-shaped geometry to one O(10), one O(2), and one O(5) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(3), one O(8), and one O(9) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(1)O4 tetrahedra and corners with two equivalent V(2)O4 tetrahedra. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(7) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Bi(1), and one Bi(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Pb(2), one Bi(1), and one Bi(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(2), one Pb(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one V(2), one Pb(1), and one Pb(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one V(1), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Mg(1), one V(2), and one Bi(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one V(2), one Pb(1), and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Pb(2) atom.
MgV2Bi2(PbO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one Pb(1), one O(1), one O(10), one O(2), one O(6), and one O(7) atom. The Mg(1)-Pb(1) bond length is 3.04 Å. The Mg(1)-O(1) bond length is 2.00 Å. The Mg(1)-O(10) bond length is 2.12 Å. The Mg(1)-O(2) bond length is 2.10 Å. The Mg(1)-O(6) bond length is 2.20 Å. The Mg(1)-O(7) bond length is 2.02 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(4), one O(6), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid. The V(1)-O(10) bond length is 1.83 Å. The V(1)-O(4) bond length is 1.85 Å. The V(1)-O(6) bond length is 1.84 Å. The V(1)-O(8) bond length is 1.80 Å. In the second V site, V(2) is bonded to one O(3), one O(5), one O(7), and one O(9) atom to form VO4 tetrahedra that share corners with two equivalent Bi(1)O5 square pyramids. The V(2)-O(3) bond length is 1.86 Å. The V(2)-O(5) bond length is 1.79 Å. The V(2)-O(7) bond length is 1.79 Å. The V(2)-O(9) bond length is 1.87 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to one Mg(1), one O(3), one O(4), one O(5), one O(8), and one O(9) atom. The Pb(1)-O(3) bond length is 2.42 Å. The Pb(1)-O(4) bond length is 2.41 Å. The Pb(1)-O(5) bond length is 2.52 Å. The Pb(1)-O(8) bond length is 2.73 Å. The Pb(1)-O(9) bond length is 2.34 Å. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one O(10), one O(2), and one O(5) atom. The Pb(2)-O(10) bond length is 2.43 Å. The Pb(2)-O(2) bond length is 2.59 Å. The Pb(2)-O(5) bond length is 2.39 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(3), one O(8), and one O(9) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(1)O4 tetrahedra and corners with two equivalent V(2)O4 tetrahedra. The Bi(1)-O(1) bond length is 2.17 Å. The Bi(1)-O(2) bond length is 2.51 Å. The Bi(1)-O(3) bond length is 2.35 Å. The Bi(1)-O(8) bond length is 2.29 Å. The Bi(1)-O(9) bond length is 2.33 Å. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(7) atom. The Bi(2)-O(1) bond length is 2.27 Å. The Bi(2)-O(2) bond length is 2.15 Å. The Bi(2)-O(4) bond length is 2.37 Å. The Bi(2)-O(6) bond length is 2.38 Å. The Bi(2)-O(7) bond length is 2.58 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Bi(1), and one Bi(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Pb(2), one Bi(1), and one Bi(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(2), one Pb(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one V(2), one Pb(1), and one Pb(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one V(1), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Mg(1), one V(2), and one Bi(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one V(2), one Pb(1), and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Pb(2) atom.