The crystal structure described by V4O7 crystallizes in the triclinic P-1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(6), one O(7), and two equivalent O(4) atoms to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one V(4)O6 octahedra, and  an edgeedge with one V(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 55°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. In the third V site, V(3) is bonded to one O(2), two equivalent O(1), and two equivalent O(6) atoms to form distorted VO5 trigonal bipyramids that share corners with three equivalent V(4)O6 octahedra, corners with two equivalent V(1)O5 trigonal bipyramids, and edges with two equivalent V(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 35-54°. In the fourth V site, V(4) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form distorted VO6 octahedra that share  a cornercorner with one V(1)O5 trigonal bipyramid, corners with three equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one V(4)O6 octahedra, and  an edgeedge with one V(1)O5 trigonal bipyramid. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(4) and two equivalent V(3) atoms. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one V(2), one V(3), and one V(4) atom. In the third O site, O(3) is bonded in a water-like geometry to one V(1) and one V(4) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one V(2), one V(4), and two equivalent V(1) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(2) and two equivalent V(4) atoms. In the sixth O site, O(6) is bonded to one V(1), one V(2), and two equivalent V(3) atoms to form distorted edge-sharing OV4 tetrahedra. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one V(1) and two equivalent V(2) atoms. is represented by the CIF file [CIF]
data_V4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.659
_cell_length_b   6.798
_cell_length_c   7.705
_cell_angle_alpha   64.675
_cell_angle_beta   84.692
_cell_angle_gamma   85.913
_symmetry_Int_Tables_number   1
_cell_volume   266.622
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  V  V0  1  0.602  0.303  0.083  1.0
  V  V1  1  0.398  0.697  0.917  1.0
  V  V2  1  0.407  0.212  0.780  1.0
  V  V3  1  0.593  0.788  0.220  1.0
  V  V4  1  0.760  0.036  0.545  1.0
  V  V5  1  0.240  0.964  0.455  1.0
  V  V6  1  0.143  0.518  0.312  1.0
  V  V7  1  0.857  0.482  0.688  1.0
  O  O8  1  0.954  0.792  0.629  1.0
  O  O9  1  0.046  0.208  0.371  1.0
  O  O10  1  0.708  0.252  0.643  1.0
  O  O11  1  0.292  0.748  0.357  1.0
  O  O12  1  0.109  0.684  0.043  1.0
  O  O13  1  0.891  0.316  0.957  1.0
  O  O14  1  0.496  0.492  0.200  1.0
  O  O15  1  0.504  0.508  0.800  1.0
  O  O16  1  0.183  0.357  0.624  1.0
  O  O17  1  0.817  0.643  0.376  1.0
  O  O18  1  0.599  0.032  0.335  1.0
  O  O19  1  0.401  0.968  0.665  1.0
  O  O20  1  0.615  0.874  0.954  1.0
  O  O21  1  0.385  0.126  0.046  1.0
[/CIF]
.
The crystal structure described by V4O7 crystallizes in the triclinic P-1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(6), one O(7), and two equivalent O(4) atoms to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one V(4)O6 octahedra, and  an edgeedge with one V(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 55°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. In the third V site, V(3) is bonded to one O(2), two equivalent O(1), and two equivalent O(6) atoms to form distorted VO5 trigonal bipyramids that share corners with three equivalent V(4)O6 octahedra, corners with two equivalent V(1)O5 trigonal bipyramids, and edges with two equivalent V(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 35-54°. In the fourth V site, V(4) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form distorted VO6 octahedra that share  a cornercorner with one V(1)O5 trigonal bipyramid, corners with three equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one V(4)O6 octahedra, and  an edgeedge with one V(1)O5 trigonal bipyramid. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(4) and two equivalent V(3) atoms. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one V(2), one V(3), and one V(4) atom. In the third O site, O(3) is bonded in a water-like geometry to one V(1) and one V(4) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one V(2), one V(4), and two equivalent V(1) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(2) and two equivalent V(4) atoms. In the sixth O site, O(6) is bonded to one V(1), one V(2), and two equivalent V(3) atoms to form distorted edge-sharing OV4 tetrahedra. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one V(1) and two equivalent V(2) atoms. is represented by the CIF file [CIF]
data_V4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.659
_cell_length_b   6.798
_cell_length_c   7.705
_cell_angle_alpha   64.675
_cell_angle_beta   84.692
_cell_angle_gamma   85.913
_symmetry_Int_Tables_number   1
_cell_volume   266.622
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  V  V0  1  0.602  0.303  0.083  1.0
  V  V1  1  0.398  0.697  0.917  1.0
  V  V2  1  0.407  0.212  0.780  1.0
  V  V3  1  0.593  0.788  0.220  1.0
  V  V4  1  0.760  0.036  0.545  1.0
  V  V5  1  0.240  0.964  0.455  1.0
  V  V6  1  0.143  0.518  0.312  1.0
  V  V7  1  0.857  0.482  0.688  1.0
  O  O8  1  0.954  0.792  0.629  1.0
  O  O9  1  0.046  0.208  0.371  1.0
  O  O10  1  0.708  0.252  0.643  1.0
  O  O11  1  0.292  0.748  0.357  1.0
  O  O12  1  0.109  0.684  0.043  1.0
  O  O13  1  0.891  0.316  0.957  1.0
  O  O14  1  0.496  0.492  0.200  1.0
  O  O15  1  0.504  0.508  0.800  1.0
  O  O16  1  0.183  0.357  0.624  1.0
  O  O17  1  0.817  0.643  0.376  1.0
  O  O18  1  0.599  0.032  0.335  1.0
  O  O19  1  0.401  0.968  0.665  1.0
  O  O20  1  0.615  0.874  0.954  1.0
  O  O21  1  0.385  0.126  0.046  1.0
[/CIF]
.