V6O13 crystallizes in the orthorhombic Cmcm space group. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(2), one O(6), one O(7), and three equivalent O(5) atoms. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(1), one O(5), one O(7), and three equivalent O(6) atoms. In the third V site, V(3) is bonded to one O(8), two equivalent O(1), and three equivalent O(4) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 0-19°. In the fourth V site, V(4) is bonded to one O(8), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 0-25°. There are eight inequivalent O sites. In the first O site, O(3) is bonded in a distorted T-shaped geometry to three equivalent V(4) atoms. In the second O site, O(4) is bonded in a T-shaped geometry to three equivalent V(3) atoms. In the third O site, O(5) is bonded to one V(2) and three equivalent V(1) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the fourth O site, O(6) is bonded to one V(1) and three equivalent V(2) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the fifth O site, O(7) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the sixth O site, O(8) is bonded in a linear geometry to one V(3) and one V(4) atom. In the seventh O site, O(1) is bonded in a linear geometry to one V(2) and one V(3) atom. In the eighth O site, O(2) is bonded in a linear geometry to one V(1) and one V(4) atom.
V6O13 crystallizes in the orthorhombic Cmcm space group. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(2), one O(6), one O(7), and three equivalent O(5) atoms. The V(1)-O(2) bond length is 1.69 Å. The V(1)-O(6) bond length is 2.35 Å. The V(1)-O(7) bond length is 1.93 Å. There are two shorter (1.95 Å) and one longer (2.09 Å) V(1)-O(5) bond length. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(1), one O(5), one O(7), and three equivalent O(6) atoms. The V(2)-O(1) bond length is 1.68 Å. The V(2)-O(5) bond length is 2.31 Å. The V(2)-O(7) bond length is 1.71 Å. There are two shorter (1.95 Å) and one longer (2.20 Å) V(2)-O(6) bond length. In the third V site, V(3) is bonded to one O(8), two equivalent O(1), and three equivalent O(4) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 0-19°. The V(3)-O(8) bond length is 1.88 Å. Both V(3)-O(1) bond lengths are 2.02 Å. There are two shorter (1.91 Å) and one longer (2.08 Å) V(3)-O(4) bond length. In the fourth V site, V(4) is bonded to one O(8), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 0-25°. The V(4)-O(8) bond length is 1.73 Å. Both V(4)-O(2) bond lengths are 1.98 Å. There are two shorter (1.92 Å) and one longer (2.06 Å) V(4)-O(3) bond length. There are eight inequivalent O sites. In the first O site, O(3) is bonded in a distorted T-shaped geometry to three equivalent V(4) atoms. In the second O site, O(4) is bonded in a T-shaped geometry to three equivalent V(3) atoms. In the third O site, O(5) is bonded to one V(2) and three equivalent V(1) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the fourth O site, O(6) is bonded to one V(1) and three equivalent V(2) atoms to form a mixture of distorted edge and corner-sharing OV4 tetrahedra. In the fifth O site, O(7) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the sixth O site, O(8) is bonded in a linear geometry to one V(3) and one V(4) atom. In the seventh O site, O(1) is bonded in a linear geometry to one V(2) and one V(3) atom. In the eighth O site, O(2) is bonded in a linear geometry to one V(1) and one V(4) atom.