V7O3 crystallizes in the triclinic P-1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded in a linear geometry to two equivalent O(1) atoms. In the second V site, V(2) is bonded in a distorted T-shaped geometry to one O(2) and two equivalent O(1) atoms. In the third V site, V(3) is bonded in an L-shaped geometry to one O(1) and one O(2) atom. In the fourth V site, V(4) is bonded in a T-shaped geometry to one O(2) and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one V(1), one V(3), two equivalent V(2), and two equivalent V(4) atoms to form a mixture of edge and corner-sharing OV6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second O site, O(2) is bonded to two equivalent V(2), two equivalent V(3), and two equivalent V(4) atoms to form a mixture of edge and corner-sharing OV6 octahedra. The corner-sharing octahedral tilt angles are 3°.
V7O3 crystallizes in the triclinic P-1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded in a linear geometry to two equivalent O(1) atoms. Both V(1)-O(1) bond lengths are 2.22 Å. In the second V site, V(2) is bonded in a distorted T-shaped geometry to one O(2) and two equivalent O(1) atoms. The V(2)-O(2) bond length is 2.22 Å. There is one shorter (2.20 Å) and one longer (2.21 Å) V(2)-O(1) bond length. In the third V site, V(3) is bonded in an L-shaped geometry to one O(1) and one O(2) atom. The V(3)-O(1) bond length is 2.22 Å. The V(3)-O(2) bond length is 2.20 Å. In the fourth V site, V(4) is bonded in a T-shaped geometry to one O(2) and two equivalent O(1) atoms. The V(4)-O(2) bond length is 2.20 Å. Both V(4)-O(1) bond lengths are 2.21 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to one V(1), one V(3), two equivalent V(2), and two equivalent V(4) atoms to form a mixture of edge and corner-sharing OV6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second O site, O(2) is bonded to two equivalent V(2), two equivalent V(3), and two equivalent V(4) atoms to form a mixture of edge and corner-sharing OV6 octahedra. The corner-sharing octahedral tilt angles are 3°.