The material structure described by Bi8V2O17 crystallizes in the triclinic P1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(10), one O(16), one O(3), one O(8), and one O(9) atom. In the second V site, V(2) is bonded to one O(11), one O(12), one O(17), and one O(2) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(2)O5 square pyramid and corners with two equivalent Bi(6)O5 trigonal bipyramids. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(14), one O(3), one O(4), one O(6), and one O(9) atom to form a mixture of distorted edge and corner-sharing BiO5 square pyramids. In the second Bi site, Bi(2) is bonded to one O(1), one O(12), one O(15), one O(5), and one O(7) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(2)O4 tetrahedra. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(10), one O(13), one O(16), one O(3), one O(5), and one O(7) atom. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(14), one O(2), one O(4), and one O(6) atom. In the fifth Bi site, Bi(5) is bonded in a rectangular see-saw-like geometry to one O(13), one O(16), one O(8), and one O(9) atom. In the sixth Bi site, Bi(6) is bonded to one O(11), one O(14), one O(17), one O(4), and one O(6) atom to form distorted BiO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O5 square pyramid, corners with two equivalent V(2)O4 tetrahedra, and  an edgeedge with one Bi(1)O5 square pyramid. In the seventh Bi site, Bi(7) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(5), and one O(7) atom. In the eighth Bi site, Bi(8) is bonded in a 5-coordinate geometry to one O(10), one O(13), one O(15), one O(7), and one O(8) atom. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Bi(2) and one Bi(7) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one V(2) and one Bi(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(1), one Bi(1), and one Bi(3) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Bi(2), one Bi(3), and one Bi(7) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Bi(2), one Bi(3), one Bi(7), and one Bi(8) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one V(1), one Bi(5), and one Bi(8) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one V(1), one Bi(1), and one Bi(5) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one V(1), one Bi(3), and one Bi(8) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one V(2) and one Bi(6) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one V(2), one Bi(2), and one Bi(7) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Bi(3), one Bi(5), and one Bi(8) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Bi(2) and one Bi(8) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one V(1), one Bi(3), and one Bi(5) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Bi(6) atom. is represented by the CIF card [CIF]
data_V2Bi8O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.339
_cell_length_b   6.176
_cell_length_c   14.278
_cell_angle_alpha   106.104
_cell_angle_beta   95.072
_cell_angle_gamma   96.774
_symmetry_Int_Tables_number   1
_cell_volume   529.057
_cell_formula_units_Z   1
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  0.693  0.349  0.503  1.0
  V  V1  1  0.677  0.311  0.011  1.0
  Bi  Bi2  1  0.335  0.984  0.328  1.0
  Bi  Bi3  1  0.286  0.972  0.823  1.0
  Bi  Bi4  1  0.195  0.382  0.605  1.0
  Bi  Bi5  1  0.260  0.346  0.173  1.0
  Bi  Bi6  1  0.889  0.789  0.436  1.0
  Bi  Bi7  1  0.730  0.927  0.159  1.0
  Bi  Bi8  1  0.606  0.561  0.815  1.0
  Bi  Bi9  1  0.762  0.956  0.674  1.0
  O  O10  1  0.380  0.732  0.897  1.0
  O  O11  1  0.411  0.265  0.038  1.0
  O  O12  1  0.400  0.321  0.484  1.0
  O  O13  1  0.490  0.194  0.247  1.0
  O  O14  1  0.376  0.285  0.723  1.0
  O  O15  1  0.450  0.687  0.230  1.0
  O  O16  1  0.477  0.763  0.715  1.0
  O  O17  1  0.669  0.700  0.530  1.0
  O  O18  1  0.675  0.054  0.420  1.0
  O  O19  1  0.773  0.337  0.617  1.0
  O  O20  1  0.836  0.159  0.068  1.0
  O  O21  1  0.663  0.220  0.884  1.0
  O  O22  1  0.064  0.013  0.565  1.0
  O  O23  1  0.047  0.030  0.232  1.0
  O  O24  1  0.975  0.786  0.743  1.0
  O  O25  1  0.939  0.445  0.461  1.0
  O  O26  1  0.782  0.597  0.050  1.0
[/CIF]
.
The material structure described by Bi8V2O17 crystallizes in the triclinic P1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(10), one O(16), one O(3), one O(8), and one O(9) atom. In the second V site, V(2) is bonded to one O(11), one O(12), one O(17), and one O(2) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(2)O5 square pyramid and corners with two equivalent Bi(6)O5 trigonal bipyramids. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(14), one O(3), one O(4), one O(6), and one O(9) atom to form a mixture of distorted edge and corner-sharing BiO5 square pyramids. In the second Bi site, Bi(2) is bonded to one O(1), one O(12), one O(15), one O(5), and one O(7) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(2)O4 tetrahedra. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(10), one O(13), one O(16), one O(3), one O(5), and one O(7) atom. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(14), one O(2), one O(4), and one O(6) atom. In the fifth Bi site, Bi(5) is bonded in a rectangular see-saw-like geometry to one O(13), one O(16), one O(8), and one O(9) atom. In the sixth Bi site, Bi(6) is bonded to one O(11), one O(14), one O(17), one O(4), and one O(6) atom to form distorted BiO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O5 square pyramid, corners with two equivalent V(2)O4 tetrahedra, and  an edgeedge with one Bi(1)O5 square pyramid. In the seventh Bi site, Bi(7) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(5), and one O(7) atom. In the eighth Bi site, Bi(8) is bonded in a 5-coordinate geometry to one O(10), one O(13), one O(15), one O(7), and one O(8) atom. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Bi(2) and one Bi(7) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one V(2) and one Bi(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(1), one Bi(1), and one Bi(3) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Bi(2), one Bi(3), and one Bi(7) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Bi(2), one Bi(3), one Bi(7), and one Bi(8) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one V(1), one Bi(5), and one Bi(8) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one V(1), one Bi(1), and one Bi(5) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one V(1), one Bi(3), and one Bi(8) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one V(2) and one Bi(6) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one V(2), one Bi(2), and one Bi(7) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Bi(3), one Bi(5), and one Bi(8) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Bi(2) and one Bi(8) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one V(1), one Bi(3), and one Bi(5) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Bi(6) atom. is represented by the CIF card [CIF]
data_V2Bi8O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.339
_cell_length_b   6.176
_cell_length_c   14.278
_cell_angle_alpha   106.104
_cell_angle_beta   95.072
_cell_angle_gamma   96.774
_symmetry_Int_Tables_number   1
_cell_volume   529.057
_cell_formula_units_Z   1
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  0.693  0.349  0.503  1.0
  V  V1  1  0.677  0.311  0.011  1.0
  Bi  Bi2  1  0.335  0.984  0.328  1.0
  Bi  Bi3  1  0.286  0.972  0.823  1.0
  Bi  Bi4  1  0.195  0.382  0.605  1.0
  Bi  Bi5  1  0.260  0.346  0.173  1.0
  Bi  Bi6  1  0.889  0.789  0.436  1.0
  Bi  Bi7  1  0.730  0.927  0.159  1.0
  Bi  Bi8  1  0.606  0.561  0.815  1.0
  Bi  Bi9  1  0.762  0.956  0.674  1.0
  O  O10  1  0.380  0.732  0.897  1.0
  O  O11  1  0.411  0.265  0.038  1.0
  O  O12  1  0.400  0.321  0.484  1.0
  O  O13  1  0.490  0.194  0.247  1.0
  O  O14  1  0.376  0.285  0.723  1.0
  O  O15  1  0.450  0.687  0.230  1.0
  O  O16  1  0.477  0.763  0.715  1.0
  O  O17  1  0.669  0.700  0.530  1.0
  O  O18  1  0.675  0.054  0.420  1.0
  O  O19  1  0.773  0.337  0.617  1.0
  O  O20  1  0.836  0.159  0.068  1.0
  O  O21  1  0.663  0.220  0.884  1.0
  O  O22  1  0.064  0.013  0.565  1.0
  O  O23  1  0.047  0.030  0.232  1.0
  O  O24  1  0.975  0.786  0.743  1.0
  O  O25  1  0.939  0.445  0.461  1.0
  O  O26  1  0.782  0.597  0.050  1.0
[/CIF]
.