MgVMo3FeO14 crystallizes in the monoclinic P2_1 space group. Mg(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(7), and one O(9) atom to form MgO6 octahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one Mo(3)O4 tetrahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 octahedra. V(1) is bonded to one O(11), one O(3), one O(5), and one O(7) atom to form VO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Mo(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-57°. There are three inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form MoO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, and  a cornercorner with one Mo(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 8-26°. In the second Mo site, Mo(2) is bonded to one O(1), one O(12), one O(8), and one O(9) atom to form MoO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, and  a cornercorner with one Mo(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 39-59°. In the third Mo site, Mo(3) is bonded to one O(10), one O(11), one O(13), and one O(14) atom to form MoO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 4-28°. Fe(1) is bonded to one O(12), one O(13), one O(14), one O(5), one O(6), and one O(7) atom to form FeO6 octahedra that share  a cornercorner with one Mo(1)O4 tetrahedra,  a cornercorner with one Mo(2)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra, and  an edgeedge with one Mg(1)O6 octahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mo(1) and one Mo(2) atom. In the second O site, O(2) is bonded in a linear geometry to one Mg(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one V(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Mg(1) and one Mo(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(1) and one Fe(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mo(1) and one Fe(1) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mg(1), one V(1), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Mo(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Mg(1) and one Mo(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Mg(1) and one Mo(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(1) and one Mo(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mo(2), and one Fe(1) atom. In the thirteenth O site, O(13) is bonded in a linear geometry to one Mo(3) and one Fe(1) atom. In the fourteenth O site, O(14) is bonded in a linear geometry to one Mo(3) and one Fe(1) atom.
MgVMo3FeO14 crystallizes in the monoclinic P2_1 space group. Mg(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(7), and one O(9) atom to form MgO6 octahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one Mo(3)O4 tetrahedra, corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 octahedra. The Mg(1)-O(10) bond length is 2.14 Å. The Mg(1)-O(12) bond length is 2.14 Å. The Mg(1)-O(2) bond length is 2.06 Å. The Mg(1)-O(4) bond length is 2.04 Å. The Mg(1)-O(7) bond length is 2.10 Å. The Mg(1)-O(9) bond length is 2.09 Å. V(1) is bonded to one O(11), one O(3), one O(5), and one O(7) atom to form VO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Mo(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-57°. The V(1)-O(11) bond length is 1.88 Å. The V(1)-O(3) bond length is 1.64 Å. The V(1)-O(5) bond length is 1.73 Å. The V(1)-O(7) bond length is 1.80 Å. There are three inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form MoO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, and  a cornercorner with one Mo(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 8-26°. The Mo(1)-O(1) bond length is 1.89 Å. The Mo(1)-O(2) bond length is 1.75 Å. The Mo(1)-O(4) bond length is 1.75 Å. The Mo(1)-O(6) bond length is 1.78 Å. In the second Mo site, Mo(2) is bonded to one O(1), one O(12), one O(8), and one O(9) atom to form MoO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, and  a cornercorner with one Mo(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 39-59°. The Mo(2)-O(1) bond length is 1.90 Å. The Mo(2)-O(12) bond length is 1.83 Å. The Mo(2)-O(8) bond length is 1.72 Å. The Mo(2)-O(9) bond length is 1.76 Å. In the third Mo site, Mo(3) is bonded to one O(10), one O(11), one O(13), and one O(14) atom to form MoO4 tetrahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 4-28°. The Mo(3)-O(10) bond length is 1.78 Å. The Mo(3)-O(11) bond length is 1.86 Å. The Mo(3)-O(13) bond length is 1.79 Å. The Mo(3)-O(14) bond length is 1.78 Å. Fe(1) is bonded to one O(12), one O(13), one O(14), one O(5), one O(6), and one O(7) atom to form FeO6 octahedra that share  a cornercorner with one Mo(1)O4 tetrahedra,  a cornercorner with one Mo(2)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent Mo(3)O4 tetrahedra, and  an edgeedge with one Mg(1)O6 octahedra. The Fe(1)-O(12) bond length is 2.07 Å. The Fe(1)-O(13) bond length is 2.09 Å. The Fe(1)-O(14) bond length is 2.05 Å. The Fe(1)-O(5) bond length is 1.96 Å. The Fe(1)-O(6) bond length is 2.00 Å. The Fe(1)-O(7) bond length is 2.02 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mo(1) and one Mo(2) atom. In the second O site, O(2) is bonded in a linear geometry to one Mg(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one V(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Mg(1) and one Mo(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(1) and one Fe(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mo(1) and one Fe(1) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mg(1), one V(1), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Mo(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Mg(1) and one Mo(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Mg(1) and one Mo(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(1) and one Mo(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mo(2), and one Fe(1) atom. In the thirteenth O site, O(13) is bonded in a linear geometry to one Mo(3) and one Fe(1) atom. In the fourteenth O site, O(14) is bonded in a linear geometry to one Mo(3) and one Fe(1) atom.