MgV2Mn2(BiO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(9) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form VO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Bi(1)O5 square pyramid, and corners with two equivalent Bi(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 40-54°. In the second V site, V(2) is bonded to one O(1), one O(2), one O(3), and one O(8) atom to form VO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Bi(2)O5 square pyramid, and corners with two equivalent Bi(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 47-62°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(2), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Bi(1)O5 square pyramid, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra,  an edgeedge with one Bi(1)O5 square pyramid, and edges with two equivalent Bi(2)O5 square pyramids. In the second Mn site, Mn(2) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Bi(2)O5 square pyramid, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Bi(2)O5 square pyramid, and edges with two equivalent Bi(1)O5 square pyramids. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(10), one O(4), one O(5), and one O(8) atom to form distorted BiO5 square pyramids that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Bi(2)O5 square pyramid. The corner-sharing octahedral tilt angles are 21°. In the second Bi site, Bi(2) is bonded to one O(10), one O(2), one O(5), one O(6), and one O(7) atom to form distorted BiO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one V(2)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one Bi(1)O5 square pyramid. The corner-sharing octahedral tilt angles are 33°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one V(2), one Mn(1), and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(2), one Mn(1), and one Bi(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Mn(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one Mn(2), and one Bi(1) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(2), one Bi(1), and one Bi(2) atom to form distorted edge-sharing OMgMn2Bi2 square pyramids. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(2), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one V(1), one Mn(1), and one Bi(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one V(2), one Mn(2), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(1), one V(1), and one Mn(1) atom. In the tenth O site, O(10) is bonded to one Mn(1), one Mn(2), one Bi(1), and one Bi(2) atom to form distorted edge-sharing OMn2Bi2 tetrahedra.
MgV2Mn2(BiO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(9) atom. The Mg(1)-O(1) bond length is 2.03 Å. The Mg(1)-O(3) bond length is 1.98 Å. The Mg(1)-O(5) bond length is 2.07 Å. The Mg(1)-O(7) bond length is 2.24 Å. The Mg(1)-O(9) bond length is 2.13 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form VO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Bi(1)O5 square pyramid, and corners with two equivalent Bi(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 40-54°. The V(1)-O(4) bond length is 1.83 Å. The V(1)-O(6) bond length is 1.86 Å. The V(1)-O(7) bond length is 1.85 Å. The V(1)-O(9) bond length is 1.78 Å. In the second V site, V(2) is bonded to one O(1), one O(2), one O(3), and one O(8) atom to form VO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Bi(2)O5 square pyramid, and corners with two equivalent Bi(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 47-62°. The V(2)-O(1) bond length is 1.86 Å. The V(2)-O(2) bond length is 1.84 Å. The V(2)-O(3) bond length is 1.81 Å. The V(2)-O(8) bond length is 1.83 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(2), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Bi(1)O5 square pyramid, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra,  an edgeedge with one Bi(1)O5 square pyramid, and edges with two equivalent Bi(2)O5 square pyramids. The Mn(1)-O(1) bond length is 2.36 Å. The Mn(1)-O(10) bond length is 2.25 Å. The Mn(1)-O(2) bond length is 2.20 Å. The Mn(1)-O(5) bond length is 2.32 Å. The Mn(1)-O(7) bond length is 2.11 Å. The Mn(1)-O(9) bond length is 2.12 Å. In the second Mn site, Mn(2) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Bi(2)O5 square pyramid, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Bi(2)O5 square pyramid, and edges with two equivalent Bi(1)O5 square pyramids. The Mn(2)-O(10) bond length is 2.23 Å. The Mn(2)-O(3) bond length is 2.23 Å. The Mn(2)-O(4) bond length is 2.17 Å. The Mn(2)-O(5) bond length is 2.44 Å. The Mn(2)-O(6) bond length is 2.16 Å. The Mn(2)-O(8) bond length is 2.27 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(10), one O(4), one O(5), and one O(8) atom to form distorted BiO5 square pyramids that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Bi(2)O5 square pyramid. The corner-sharing octahedral tilt angles are 21°. The Bi(1)-O(1) bond length is 2.47 Å. The Bi(1)-O(10) bond length is 2.14 Å. The Bi(1)-O(4) bond length is 2.26 Å. The Bi(1)-O(5) bond length is 2.47 Å. The Bi(1)-O(8) bond length is 2.24 Å. In the second Bi site, Bi(2) is bonded to one O(10), one O(2), one O(5), one O(6), and one O(7) atom to form distorted BiO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one V(2)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one Bi(1)O5 square pyramid. The corner-sharing octahedral tilt angles are 33°. The Bi(2)-O(10) bond length is 2.41 Å. The Bi(2)-O(2) bond length is 2.33 Å. The Bi(2)-O(5) bond length is 2.19 Å. The Bi(2)-O(6) bond length is 2.29 Å. The Bi(2)-O(7) bond length is 2.40 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one V(2), one Mn(1), and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(2), one Mn(1), and one Bi(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Mn(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one Mn(2), and one Bi(1) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(2), one Bi(1), and one Bi(2) atom to form distorted edge-sharing OMgMn2Bi2 square pyramids. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(2), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one V(1), one Mn(1), and one Bi(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one V(2), one Mn(2), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(1), one V(1), and one Mn(1) atom. In the tenth O site, O(10) is bonded to one Mn(1), one Mn(2), one Bi(1), and one Bi(2) atom to form distorted edge-sharing OMn2Bi2 tetrahedra.