The structure described by V8O15 crystallizes in the triclinic P-1 space group. There are eight inequivalent V sites. In the first V site, V(1) is bonded to one O(14), one O(15), one O(6), one O(7), one O(8), and one O(9) atom to form a mixture of distorted corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(15), one O(4), one O(6), one O(9), and two equivalent O(5) atoms. In the third V site, V(3) is bonded to one O(1), one O(10), one O(3), one O(8), and two equivalent O(12) atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 47-52°. In the fourth V site, V(4) is bonded to one O(1), one O(10), one O(13), one O(2), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 49-53°. In the fifth V site, V(5) is bonded to one O(11), one O(15), one O(5), one O(6), and two equivalent O(9) atoms to form a mixture of distorted corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the sixth V site, V(6) is bonded to one O(10), one O(11), one O(13), one O(14), one O(2), and one O(8) atom to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the seventh V site, V(7) is bonded to one O(1), one O(12), one O(14), one O(2), one O(4), and one O(7) atom to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 47-54°. In the eighth V site, V(8) is bonded to one O(11), one O(13), one O(4), one O(5), one O(6), and one O(7) atom to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(3), one V(4), and one V(7) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one V(4), one V(6), and one V(7) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(3) and two equivalent V(4) atoms. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one V(2), one V(7), and one V(8) atom. In the fifth O site, O(5) is bonded to one V(5), one V(8), and two equivalent V(2) atoms to form a mixture of distorted corner and edge-sharing OV4 trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one V(1), one V(2), one V(5), and one V(8) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(1), one V(7), and one V(8) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one V(6) atom. In the ninth O site, O(9) is bonded to one V(1), one V(2), and two equivalent V(5) atoms to form a mixture of distorted corner and edge-sharing OV4 trigonal pyramids. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one V(3), one V(4), and one V(6) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one V(5), one V(6), and one V(8) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one V(7) and two equivalent V(3) atoms. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one V(4), one V(6), and one V(8) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one V(1), one V(6), and one V(7) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one V(5) atom. is represented by the CIF card [CIF]
data_V8O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.542
_cell_length_b   7.090
_cell_length_c   13.497
_cell_angle_alpha   101.553
_cell_angle_beta   96.661
_cell_angle_gamma   107.580
_symmetry_Int_Tables_number   1
_cell_volume   486.427
_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  0.316  0.159  0.187  1.0
  V  V1  1  0.184  0.681  0.952  1.0
  V  V2  1  0.740  0.671  0.560  1.0
  V  V3  1  0.739  0.172  0.567  1.0
  V  V4  1  0.260  0.329  0.440  1.0
  V  V5  1  0.827  0.824  0.051  1.0
  V  V6  1  0.780  0.988  0.309  1.0
  V  V7  1  0.261  0.828  0.433  1.0
  V  V8  1  0.210  0.509  0.692  1.0
  V  V9  1  0.692  0.357  0.823  1.0
  V  V10  1  0.684  0.841  0.813  1.0
  V  V11  1  0.220  0.012  0.691  1.0
  V  V12  1  0.816  0.319  0.048  1.0
  V  V13  1  0.790  0.491  0.308  1.0
  V  V14  1  0.308  0.643  0.177  1.0
  V  V15  1  0.173  0.176  0.949  1.0
  O  O16  1  0.124  0.521  0.391  1.0
  O  O17  1  0.067  0.214  0.655  1.0
  O  O18  1  0.599  0.867  0.526  1.0
  O  O19  1  0.946  0.492  0.183  1.0
  O  O20  1  0.876  0.479  0.609  1.0
  O  O21  1  0.203  0.460  0.022  1.0
  O  O22  1  0.809  0.153  0.894  1.0
  O  O23  1  0.401  0.133  0.474  1.0
  O  O24  1  0.460  0.451  0.219  1.0
  O  O25  1  0.144  0.146  0.289  1.0
  O  O26  1  0.998  0.130  0.080  1.0
  O  O27  1  0.912  0.172  0.451  1.0
  O  O28  1  0.674  0.809  0.156  1.0
  O  O29  1  0.856  0.854  0.711  1.0
  O  O30  1  0.382  0.508  0.577  1.0
  O  O31  1  0.797  0.540  0.978  1.0
  O  O32  1  0.575  0.173  0.682  1.0
  O  O33  1  0.054  0.508  0.817  1.0
  O  O34  1  0.326  0.191  0.844  1.0
  O  O35  1  0.350  0.811  0.743  1.0
  O  O36  1  0.485  0.201  0.049  1.0
  O  O37  1  0.088  0.828  0.549  1.0
  O  O38  1  0.933  0.786  0.345  1.0
  O  O39  1  0.191  0.847  0.106  1.0
  O  O40  1  0.002  0.870  0.920  1.0
  O  O41  1  0.425  0.827  0.318  1.0
  O  O42  1  0.540  0.549  0.781  1.0
  O  O43  1  0.650  0.189  0.257  1.0
  O  O44  1  0.515  0.799  0.951  1.0
  O  O45  1  0.618  0.492  0.423  1.0
[/CIF]
.
The structure described by V8O15 crystallizes in the triclinic P-1 space group. There are eight inequivalent V sites. In the first V site, V(1) is bonded to one O(14), one O(15), one O(6), one O(7), one O(8), and one O(9) atom to form a mixture of distorted corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(15), one O(4), one O(6), one O(9), and two equivalent O(5) atoms. In the third V site, V(3) is bonded to one O(1), one O(10), one O(3), one O(8), and two equivalent O(12) atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 47-52°. In the fourth V site, V(4) is bonded to one O(1), one O(10), one O(13), one O(2), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 49-53°. In the fifth V site, V(5) is bonded to one O(11), one O(15), one O(5), one O(6), and two equivalent O(9) atoms to form a mixture of distorted corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the sixth V site, V(6) is bonded to one O(10), one O(11), one O(13), one O(14), one O(2), and one O(8) atom to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the seventh V site, V(7) is bonded to one O(1), one O(12), one O(14), one O(2), one O(4), and one O(7) atom to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 47-54°. In the eighth V site, V(8) is bonded to one O(11), one O(13), one O(4), one O(5), one O(6), and one O(7) atom to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(3), one V(4), and one V(7) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one V(4), one V(6), and one V(7) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(3) and two equivalent V(4) atoms. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one V(2), one V(7), and one V(8) atom. In the fifth O site, O(5) is bonded to one V(5), one V(8), and two equivalent V(2) atoms to form a mixture of distorted corner and edge-sharing OV4 trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one V(1), one V(2), one V(5), and one V(8) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(1), one V(7), and one V(8) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one V(6) atom. In the ninth O site, O(9) is bonded to one V(1), one V(2), and two equivalent V(5) atoms to form a mixture of distorted corner and edge-sharing OV4 trigonal pyramids. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one V(3), one V(4), and one V(6) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one V(5), one V(6), and one V(8) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one V(7) and two equivalent V(3) atoms. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one V(4), one V(6), and one V(8) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one V(1), one V(6), and one V(7) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one V(5) atom. is represented by the CIF card [CIF]
data_V8O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.542
_cell_length_b   7.090
_cell_length_c   13.497
_cell_angle_alpha   101.553
_cell_angle_beta   96.661
_cell_angle_gamma   107.580
_symmetry_Int_Tables_number   1
_cell_volume   486.427
_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  0.316  0.159  0.187  1.0
  V  V1  1  0.184  0.681  0.952  1.0
  V  V2  1  0.740  0.671  0.560  1.0
  V  V3  1  0.739  0.172  0.567  1.0
  V  V4  1  0.260  0.329  0.440  1.0
  V  V5  1  0.827  0.824  0.051  1.0
  V  V6  1  0.780  0.988  0.309  1.0
  V  V7  1  0.261  0.828  0.433  1.0
  V  V8  1  0.210  0.509  0.692  1.0
  V  V9  1  0.692  0.357  0.823  1.0
  V  V10  1  0.684  0.841  0.813  1.0
  V  V11  1  0.220  0.012  0.691  1.0
  V  V12  1  0.816  0.319  0.048  1.0
  V  V13  1  0.790  0.491  0.308  1.0
  V  V14  1  0.308  0.643  0.177  1.0
  V  V15  1  0.173  0.176  0.949  1.0
  O  O16  1  0.124  0.521  0.391  1.0
  O  O17  1  0.067  0.214  0.655  1.0
  O  O18  1  0.599  0.867  0.526  1.0
  O  O19  1  0.946  0.492  0.183  1.0
  O  O20  1  0.876  0.479  0.609  1.0
  O  O21  1  0.203  0.460  0.022  1.0
  O  O22  1  0.809  0.153  0.894  1.0
  O  O23  1  0.401  0.133  0.474  1.0
  O  O24  1  0.460  0.451  0.219  1.0
  O  O25  1  0.144  0.146  0.289  1.0
  O  O26  1  0.998  0.130  0.080  1.0
  O  O27  1  0.912  0.172  0.451  1.0
  O  O28  1  0.674  0.809  0.156  1.0
  O  O29  1  0.856  0.854  0.711  1.0
  O  O30  1  0.382  0.508  0.577  1.0
  O  O31  1  0.797  0.540  0.978  1.0
  O  O32  1  0.575  0.173  0.682  1.0
  O  O33  1  0.054  0.508  0.817  1.0
  O  O34  1  0.326  0.191  0.844  1.0
  O  O35  1  0.350  0.811  0.743  1.0
  O  O36  1  0.485  0.201  0.049  1.0
  O  O37  1  0.088  0.828  0.549  1.0
  O  O38  1  0.933  0.786  0.345  1.0
  O  O39  1  0.191  0.847  0.106  1.0
  O  O40  1  0.002  0.870  0.920  1.0
  O  O41  1  0.425  0.827  0.318  1.0
  O  O42  1  0.540  0.549  0.781  1.0
  O  O43  1  0.650  0.189  0.257  1.0
  O  O44  1  0.515  0.799  0.951  1.0
  O  O45  1  0.618  0.492  0.423  1.0
[/CIF]
.