V6O13 crystallizes in the monoclinic Pc space group. There are six inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(13), one O(3), one O(5), one O(7), and two equivalent O(2) atoms. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(13), one O(7), and two equivalent O(9) atoms. In the third V site, V(3) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(6), one O(7), and two equivalent O(3) atoms. In the fourth V site, V(4) is bonded in a 6-coordinate geometry to one O(12), one O(13), one O(3), one O(9), and two equivalent O(10) atoms. In the fifth V site, V(5) is bonded to one O(1), one O(12), one O(4), one O(5), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 3-18°. In the sixth V site, V(6) is bonded to one O(11), one O(4), one O(6), one O(8), and two equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 3-31°. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one V(5) and two equivalent V(6) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one V(3) and two equivalent V(1) atoms. In the third O site, O(3) is bonded to one V(1), one V(4), and two equivalent V(3) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the fourth O site, O(4) is bonded in a linear geometry to one V(5) and one V(6) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one V(5) atom. In the sixth O site, O(6) is bonded in a linear geometry to one V(3) and one V(6) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(3) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one V(6) and two equivalent V(5) atoms. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one V(4) and two equivalent V(2) atoms. In the tenth O site, O(10) is bonded to one V(2), one V(3), and two equivalent V(4) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the eleventh O site, O(11) is bonded in a linear geometry to one V(2) and one V(6) atom. In the twelfth O site, O(12) is bonded in a linear geometry to one V(4) and one V(5) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(4) atom.
V6O13 crystallizes in the monoclinic Pc space group. There are six inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(13), one O(3), one O(5), one O(7), and two equivalent O(2) atoms. The V(1)-O(13) bond length is 2.29 Å. The V(1)-O(3) bond length is 2.09 Å. The V(1)-O(5) bond length is 1.68 Å. The V(1)-O(7) bond length is 1.76 Å. Both V(1)-O(2) bond lengths are 1.94 Å. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(13), one O(7), and two equivalent O(9) atoms. The V(2)-O(10) bond length is 2.09 Å. The V(2)-O(11) bond length is 1.67 Å. The V(2)-O(13) bond length is 1.76 Å. The V(2)-O(7) bond length is 2.29 Å. Both V(2)-O(9) bond lengths are 1.94 Å. In the third V site, V(3) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(6), one O(7), and two equivalent O(3) atoms. The V(3)-O(10) bond length is 2.22 Å. The V(3)-O(2) bond length is 2.00 Å. The V(3)-O(6) bond length is 1.70 Å. The V(3)-O(7) bond length is 2.02 Å. Both V(3)-O(3) bond lengths are 1.97 Å. In the fourth V site, V(4) is bonded in a 6-coordinate geometry to one O(12), one O(13), one O(3), one O(9), and two equivalent O(10) atoms. The V(4)-O(12) bond length is 1.70 Å. The V(4)-O(13) bond length is 2.02 Å. The V(4)-O(3) bond length is 2.22 Å. The V(4)-O(9) bond length is 2.00 Å. Both V(4)-O(10) bond lengths are 1.97 Å. In the fifth V site, V(5) is bonded to one O(1), one O(12), one O(4), one O(5), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 3-18°. The V(5)-O(1) bond length is 1.99 Å. The V(5)-O(12) bond length is 1.97 Å. The V(5)-O(4) bond length is 1.90 Å. The V(5)-O(5) bond length is 2.03 Å. There is one shorter (1.78 Å) and one longer (2.02 Å) V(5)-O(8) bond length. In the sixth V site, V(6) is bonded to one O(11), one O(4), one O(6), one O(8), and two equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 3-31°. The V(6)-O(11) bond length is 2.04 Å. The V(6)-O(4) bond length is 1.72 Å. The V(6)-O(6) bond length is 1.97 Å. The V(6)-O(8) bond length is 2.21 Å. There is one shorter (1.91 Å) and one longer (1.98 Å) V(6)-O(1) bond length. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one V(5) and two equivalent V(6) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one V(3) and two equivalent V(1) atoms. In the third O site, O(3) is bonded to one V(1), one V(4), and two equivalent V(3) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the fourth O site, O(4) is bonded in a linear geometry to one V(5) and one V(6) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one V(5) atom. In the sixth O site, O(6) is bonded in a linear geometry to one V(3) and one V(6) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(3) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one V(6) and two equivalent V(5) atoms. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one V(4) and two equivalent V(2) atoms. In the tenth O site, O(10) is bonded to one V(2), one V(3), and two equivalent V(4) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the eleventh O site, O(11) is bonded in a linear geometry to one V(2) and one V(6) atom. In the twelfth O site, O(12) is bonded in a linear geometry to one V(4) and one V(5) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(4) atom.