MgV2Bi2(PbO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(10), one O(3), 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 corners with three equivalent Bi(2)O5 trigonal bipyramids. In the second V site, V(2) is bonded in a trigonal pyramidal geometry to one O(3), one O(5), one O(7), and one O(9) atom. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), 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(1), one O(2), one O(5), and one O(9) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(9) atom. In the second Bi site, Bi(2) is bonded to one O(1), one O(10), one O(2), one O(4), and one O(6) atom to form distorted BiO5 trigonal bipyramids that share corners with three equivalent V(1)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form edge-sharing OBi2Pb2 tetrahedra. In the second O site, O(2) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form edge-sharing OBi2Pb2 tetrahedra. In the third O site, O(3) is bonded in a T-shaped geometry to one Mg(1), one V(2), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one V(1) and one Bi(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one V(2), one Pb(1), one Pb(2), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Bi(2) atom. In the seventh O site, O(7) is bonded in an L-shaped geometry to one Mg(1) and one V(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one V(1) and one Pb(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one V(2), one Pb(1), one Pb(2), 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 Bi(2) atom.
MgV2Bi2(PbO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(10), one O(3), one O(6), and one O(7) atom. The Mg(1)-O(10) bond length is 1.98 Å. The Mg(1)-O(3) bond length is 2.00 Å. The Mg(1)-O(6) bond length is 1.98 Å. The Mg(1)-O(7) bond length is 2.05 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 corners with three equivalent Bi(2)O5 trigonal bipyramids. The V(1)-O(10) bond length is 1.84 Å. The V(1)-O(4) bond length is 1.79 Å. The V(1)-O(6) bond length is 1.84 Å. The V(1)-O(8) bond length is 1.81 Å. In the second V site, V(2) is bonded in a trigonal pyramidal geometry to one O(3), one O(5), one O(7), and one O(9) atom. The V(2)-O(3) bond length is 1.88 Å. The V(2)-O(5) bond length is 1.84 Å. The V(2)-O(7) bond length is 1.78 Å. The V(2)-O(9) bond length is 1.85 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(8), and one O(9) atom. The Pb(1)-O(1) bond length is 2.62 Å. The Pb(1)-O(2) bond length is 2.59 Å. The Pb(1)-O(5) bond length is 2.77 Å. The Pb(1)-O(8) bond length is 2.26 Å. The Pb(1)-O(9) bond length is 2.76 Å. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(9) atom. The Pb(2)-O(1) bond length is 2.38 Å. The Pb(2)-O(2) bond length is 2.38 Å. The Pb(2)-O(5) bond length is 2.49 Å. The Pb(2)-O(9) bond length is 2.49 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(9) atom. The Bi(1)-O(1) bond length is 2.24 Å. The Bi(1)-O(2) bond length is 2.24 Å. The Bi(1)-O(3) bond length is 2.30 Å. The Bi(1)-O(5) bond length is 2.44 Å. The Bi(1)-O(9) bond length is 2.43 Å. In the second Bi site, Bi(2) is bonded to one O(1), one O(10), one O(2), one O(4), and one O(6) atom to form distorted BiO5 trigonal bipyramids that share corners with three equivalent V(1)O4 tetrahedra. The Bi(2)-O(1) bond length is 2.28 Å. The Bi(2)-O(10) bond length is 2.39 Å. The Bi(2)-O(2) bond length is 2.28 Å. The Bi(2)-O(4) bond length is 2.29 Å. The Bi(2)-O(6) bond length is 2.40 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form edge-sharing OBi2Pb2 tetrahedra. In the second O site, O(2) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form edge-sharing OBi2Pb2 tetrahedra. In the third O site, O(3) is bonded in a T-shaped geometry to one Mg(1), one V(2), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one V(1) and one Bi(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one V(2), one Pb(1), one Pb(2), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Bi(2) atom. In the seventh O site, O(7) is bonded in an L-shaped geometry to one Mg(1) and one V(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one V(1) and one Pb(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one V(2), one Pb(1), one Pb(2), 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 Bi(2) atom.