The material described by Bi8V2O17 crystallizes in the monoclinic Cm space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(12), one O(7), and two equivalent O(9) atoms to form distorted corner-sharing VO5 square pyramids. In the second V site, V(2) is bonded to one O(11), one O(13), one O(16), and two equivalent O(14) atoms to form distorted corner-sharing VO5 trigonal bipyramids. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(15), one O(2), and three equivalent O(17) atoms to form corner-sharing BiO5 trigonal bipyramids. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to two equivalent O(2) and three equivalent O(1) atoms. In the third Bi site, Bi(3) is bonded to one O(1), one O(5), and three equivalent O(3) atoms to form corner-sharing BiO5 trigonal bipyramids. In the fourth Bi site, Bi(4) is bonded in a 5-coordinate geometry to two equivalent O(4) and three equivalent O(5) atoms. In the fifth Bi site, Bi(5) is bonded to one O(4), one O(8), and three equivalent O(6) atoms to form corner-sharing BiO5 trigonal bipyramids. In the sixth Bi site, Bi(6) is bonded in a 6-coordinate geometry to one O(10), two equivalent O(8), and three equivalent O(7) atoms. In the seventh Bi site, Bi(7) is bonded in a distorted body-centered cubic geometry to one O(14), one O(9), three equivalent O(11), and three equivalent O(12) atoms. In the eighth Bi site, Bi(8) is bonded in a 7-coordinate geometry to one O(13), three equivalent O(15), and three equivalent O(16) atoms. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded to one Bi(3) and three equivalent Bi(2) atoms to form corner-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to one Bi(1) and two equivalent Bi(2) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to three equivalent Bi(3) atoms. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Bi(5) and two equivalent Bi(4) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Bi(3) and three equivalent Bi(4) atoms. In the sixth O site, O(6) is bonded in a trigonal planar geometry to three equivalent Bi(5) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one V(1) and three equivalent Bi(6) atoms. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Bi(5) and two equivalent Bi(6) atoms. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to two equivalent V(1) and one Bi(7) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one V(1) and one Bi(6) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one V(2) and three equivalent Bi(7) atoms. In the twelfth O site, O(12) is bonded to one V(1) and three equivalent Bi(7) atoms to form distorted corner-sharing OVBi3 tetrahedra. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one V(2) and one Bi(8) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to two equivalent V(2) and one Bi(7) atom. In the fifteenth O site, O(15) is bonded to one Bi(1) and three equivalent Bi(8) atoms to form distorted corner-sharing OBi4 tetrahedra. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one V(2) and three equivalent Bi(8) atoms. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to three equivalent Bi(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_V2Bi8O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.098
_cell_length_b   4.098
_cell_length_c   31.594
_cell_angle_alpha   85.677
_cell_angle_beta   85.677
_cell_angle_gamma   54.510
_symmetry_Int_Tables_number   1
_cell_volume   430.401
_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  0.725  0.725  0.610  1.0
  V  V1  1  0.490  0.490  0.788  1.0
  Bi  Bi2  1  0.997  0.997  0.981  1.0
  Bi  Bi3  1  0.350  0.350  0.093  1.0
  Bi  Bi4  1  0.596  0.596  0.196  1.0
  Bi  Bi5  1  0.847  0.847  0.305  1.0
  Bi  Bi6  1  0.192  0.192  0.413  1.0
  Bi  Bi7  1  0.532  0.532  0.523  1.0
  Bi  Bi8  1  0.088  0.088  0.698  1.0
  Bi  Bi9  1  0.688  0.688  0.875  1.0
  O  O10  1  0.613  0.613  0.123  1.0
  O  O11  1  0.953  0.953  0.056  1.0
  O  O12  1  0.272  0.272  0.191  1.0
  O  O13  1  0.233  0.233  0.339  1.0
  O  O14  1  0.600  0.600  0.271  1.0
  O  O15  1  0.866  0.866  0.408  1.0
  O  O16  1  0.814  0.814  0.553  1.0
  O  O17  1  0.165  0.165  0.488  1.0
  O  O18  1  0.184  0.184  0.621  1.0
  O  O19  1  0.500  0.500  0.597  1.0
  O  O20  1  0.432  0.432  0.729  1.0
  O  O21  1  0.783  0.783  0.668  1.0
  O  O22  1  0.712  0.712  0.802  1.0
  O  O23  1  0.028  0.028  0.775  1.0
  O  O24  1  0.033  0.033  0.906  1.0
  O  O25  1  0.395  0.395  0.843  1.0
  O  O26  1  0.672  0.672  0.978  1.0
[/CIF]
.
The material described by Bi8V2O17 crystallizes in the monoclinic Cm space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(12), one O(7), and two equivalent O(9) atoms to form distorted corner-sharing VO5 square pyramids. In the second V site, V(2) is bonded to one O(11), one O(13), one O(16), and two equivalent O(14) atoms to form distorted corner-sharing VO5 trigonal bipyramids. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(15), one O(2), and three equivalent O(17) atoms to form corner-sharing BiO5 trigonal bipyramids. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to two equivalent O(2) and three equivalent O(1) atoms. In the third Bi site, Bi(3) is bonded to one O(1), one O(5), and three equivalent O(3) atoms to form corner-sharing BiO5 trigonal bipyramids. In the fourth Bi site, Bi(4) is bonded in a 5-coordinate geometry to two equivalent O(4) and three equivalent O(5) atoms. In the fifth Bi site, Bi(5) is bonded to one O(4), one O(8), and three equivalent O(6) atoms to form corner-sharing BiO5 trigonal bipyramids. In the sixth Bi site, Bi(6) is bonded in a 6-coordinate geometry to one O(10), two equivalent O(8), and three equivalent O(7) atoms. In the seventh Bi site, Bi(7) is bonded in a distorted body-centered cubic geometry to one O(14), one O(9), three equivalent O(11), and three equivalent O(12) atoms. In the eighth Bi site, Bi(8) is bonded in a 7-coordinate geometry to one O(13), three equivalent O(15), and three equivalent O(16) atoms. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded to one Bi(3) and three equivalent Bi(2) atoms to form corner-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to one Bi(1) and two equivalent Bi(2) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to three equivalent Bi(3) atoms. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Bi(5) and two equivalent Bi(4) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Bi(3) and three equivalent Bi(4) atoms. In the sixth O site, O(6) is bonded in a trigonal planar geometry to three equivalent Bi(5) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one V(1) and three equivalent Bi(6) atoms. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Bi(5) and two equivalent Bi(6) atoms. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to two equivalent V(1) and one Bi(7) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one V(1) and one Bi(6) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one V(2) and three equivalent Bi(7) atoms. In the twelfth O site, O(12) is bonded to one V(1) and three equivalent Bi(7) atoms to form distorted corner-sharing OVBi3 tetrahedra. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one V(2) and one Bi(8) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to two equivalent V(2) and one Bi(7) atom. In the fifteenth O site, O(15) is bonded to one Bi(1) and three equivalent Bi(8) atoms to form distorted corner-sharing OBi4 tetrahedra. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one V(2) and three equivalent Bi(8) atoms. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to three equivalent Bi(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_V2Bi8O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.098
_cell_length_b   4.098
_cell_length_c   31.594
_cell_angle_alpha   85.677
_cell_angle_beta   85.677
_cell_angle_gamma   54.510
_symmetry_Int_Tables_number   1
_cell_volume   430.401
_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  0.725  0.725  0.610  1.0
  V  V1  1  0.490  0.490  0.788  1.0
  Bi  Bi2  1  0.997  0.997  0.981  1.0
  Bi  Bi3  1  0.350  0.350  0.093  1.0
  Bi  Bi4  1  0.596  0.596  0.196  1.0
  Bi  Bi5  1  0.847  0.847  0.305  1.0
  Bi  Bi6  1  0.192  0.192  0.413  1.0
  Bi  Bi7  1  0.532  0.532  0.523  1.0
  Bi  Bi8  1  0.088  0.088  0.698  1.0
  Bi  Bi9  1  0.688  0.688  0.875  1.0
  O  O10  1  0.613  0.613  0.123  1.0
  O  O11  1  0.953  0.953  0.056  1.0
  O  O12  1  0.272  0.272  0.191  1.0
  O  O13  1  0.233  0.233  0.339  1.0
  O  O14  1  0.600  0.600  0.271  1.0
  O  O15  1  0.866  0.866  0.408  1.0
  O  O16  1  0.814  0.814  0.553  1.0
  O  O17  1  0.165  0.165  0.488  1.0
  O  O18  1  0.184  0.184  0.621  1.0
  O  O19  1  0.500  0.500  0.597  1.0
  O  O20  1  0.432  0.432  0.729  1.0
  O  O21  1  0.783  0.783  0.668  1.0
  O  O22  1  0.712  0.712  0.802  1.0
  O  O23  1  0.028  0.028  0.775  1.0
  O  O24  1  0.033  0.033  0.906  1.0
  O  O25  1  0.395  0.395  0.843  1.0
  O  O26  1  0.672  0.672  0.978  1.0
[/CIF]
.