MgV2Bi4O11 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(5), and one O(6) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(5), one O(8), and one O(9) atom to form corner-sharing VO4 tetrahedra. In the second V site, V(2) is bonded to one O(10), one O(11), one O(3), one O(4), and one O(8) atom to form corner-sharing VO5 square pyramids. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(11), one O(2), one O(4), one O(7), and one O(9) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom. In the third Bi site, Bi(3) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 3-coordinate geometry to one O(1), one O(10), one O(2), one O(6), and one O(7) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the second O site, O(2) is bonded in a tetrahedral geometry to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one V(2), one Bi(1), one Bi(2), and one Bi(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Mg(1), one V(1), and one Bi(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one V(1) and one V(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one V(1), one Bi(1), and one Bi(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Bi(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one Bi(1) atom.
MgV2Bi4O11 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(5), and one O(6) atom. The Mg(1)-O(10) bond length is 1.96 Å. The Mg(1)-O(11) bond length is 2.02 Å. The Mg(1)-O(5) bond length is 2.00 Å. The Mg(1)-O(6) bond length is 2.06 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(5), one O(8), and one O(9) atom to form corner-sharing VO4 tetrahedra. The V(1)-O(3) bond length is 1.73 Å. The V(1)-O(5) bond length is 1.74 Å. The V(1)-O(8) bond length is 1.77 Å. The V(1)-O(9) bond length is 1.79 Å. In the second V site, V(2) is bonded to one O(10), one O(11), one O(3), one O(4), and one O(8) atom to form corner-sharing VO5 square pyramids. The V(2)-O(10) bond length is 1.99 Å. The V(2)-O(11) bond length is 1.91 Å. The V(2)-O(3) bond length is 2.12 Å. The V(2)-O(4) bond length is 1.98 Å. The V(2)-O(8) bond length is 2.09 Å. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(11), one O(2), one O(4), one O(7), and one O(9) atom. The Bi(1)-O(1) bond length is 2.20 Å. The Bi(1)-O(11) bond length is 2.49 Å. The Bi(1)-O(2) bond length is 2.46 Å. The Bi(1)-O(4) bond length is 2.77 Å. The Bi(1)-O(7) bond length is 2.34 Å. The Bi(1)-O(9) bond length is 2.55 Å. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom. The Bi(2)-O(1) bond length is 2.39 Å. The Bi(2)-O(2) bond length is 2.44 Å. The Bi(2)-O(4) bond length is 2.23 Å. The Bi(2)-O(5) bond length is 2.73 Å. The Bi(2)-O(6) bond length is 2.28 Å. The Bi(2)-O(7) bond length is 2.35 Å. In the third Bi site, Bi(3) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(9) atom. The Bi(3)-O(1) bond length is 2.29 Å. The Bi(3)-O(2) bond length is 2.48 Å. The Bi(3)-O(4) bond length is 2.44 Å. The Bi(3)-O(6) bond length is 2.19 Å. The Bi(3)-O(9) bond length is 2.43 Å. In the fourth Bi site, Bi(4) is bonded in a 3-coordinate geometry to one O(1), one O(10), one O(2), one O(6), and one O(7) atom. The Bi(4)-O(1) bond length is 2.79 Å. The Bi(4)-O(10) bond length is 2.18 Å. The Bi(4)-O(2) bond length is 2.17 Å. The Bi(4)-O(6) bond length is 2.77 Å. The Bi(4)-O(7) bond length is 2.15 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the second O site, O(2) is bonded in a tetrahedral geometry to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one V(2), one Bi(1), one Bi(2), and one Bi(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Mg(1), one V(1), and one Bi(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one V(1) and one V(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one V(1), one Bi(1), and one Bi(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Bi(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one Bi(1) atom.