The compound described by Bi4V2O11 crystallizes in the monoclinic Pc space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(11), one O(3), one O(6), one O(7), and one O(8) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent Bi(1)O6 pentagonal pyramids and corners with two equivalent V(2)O4 tetrahedra. In the second V site, V(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(1)O6 pentagonal pyramid and corners with two equivalent V(1)O5 trigonal bipyramids. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(11), one O(2), one O(3), one O(4), and one O(9) atom to form distorted BiO6 pentagonal pyramids that share  a cornercorner with one V(2)O4 tetrahedra and corners with two equivalent V(1)O5 trigonal bipyramids. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), and one O(6) atom. In the third Bi site, Bi(3) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(2), and one O(5) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form edge-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form edge-sharing OBi4 tetrahedra. 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(2), and one Bi(3) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Bi(2), one Bi(3), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one V(1) and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one V(1) and one V(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one V(1) and one V(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one V(2) and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one V(2), one Bi(2), and one Bi(4) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one V(1) and one Bi(1) atom. is represented by the CIF file [CIF]
data_V2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.648
_cell_length_b   5.945
_cell_length_c   15.531
_cell_angle_alpha   87.507
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   521.060
_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  0.237  0.567  0.491  1.0
  V  V1  1  0.201  0.980  0.003  1.0
  V  V2  1  0.799  0.980  0.503  1.0
  V  V3  1  0.763  0.567  0.991  1.0
  Bi  Bi4  1  0.731  0.483  0.642  1.0
  Bi  Bi5  1  0.301  0.534  0.815  1.0
  Bi  Bi6  1  0.712  0.038  0.167  1.0
  Bi  Bi7  1  0.154  0.089  0.329  1.0
  Bi  Bi8  1  0.288  0.038  0.667  1.0
  Bi  Bi9  1  0.846  0.089  0.829  1.0
  Bi  Bi10  1  0.269  0.483  0.142  1.0
  Bi  Bi11  1  0.699  0.534  0.315  1.0
  O  O12  1  0.527  0.263  0.744  1.0
  O  O13  1  0.037  0.318  0.740  1.0
  O  O14  1  0.597  0.407  0.069  1.0
  O  O15  1  0.510  0.732  0.215  1.0
  O  O16  1  0.949  0.847  0.260  1.0
  O  O17  1  0.699  0.511  0.885  1.0
  O  O18  1  0.580  0.783  0.497  1.0
  O  O19  1  0.095  0.858  0.508  1.0
  O  O20  1  0.490  0.732  0.715  1.0
  O  O21  1  0.051  0.847  0.760  1.0
  O  O22  1  0.240  0.103  0.102  1.0
  O  O23  1  0.420  0.783  0.997  1.0
  O  O24  1  0.797  0.135  0.404  1.0
  O  O25  1  0.760  0.103  0.602  1.0
  O  O26  1  0.023  0.437  0.008  1.0
  O  O27  1  0.473  0.263  0.244  1.0
  O  O28  1  0.963  0.318  0.240  1.0
  O  O29  1  0.203  0.135  0.904  1.0
  O  O30  1  0.403  0.407  0.569  1.0
  O  O31  1  0.977  0.437  0.508  1.0
  O  O32  1  0.301  0.511  0.385  1.0
  O  O33  1  0.905  0.858  0.008  1.0
[/CIF]
.
The compound described by Bi4V2O11 crystallizes in the monoclinic Pc space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(11), one O(3), one O(6), one O(7), and one O(8) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent Bi(1)O6 pentagonal pyramids and corners with two equivalent V(2)O4 tetrahedra. In the second V site, V(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(1)O6 pentagonal pyramid and corners with two equivalent V(1)O5 trigonal bipyramids. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(11), one O(2), one O(3), one O(4), and one O(9) atom to form distorted BiO6 pentagonal pyramids that share  a cornercorner with one V(2)O4 tetrahedra and corners with two equivalent V(1)O5 trigonal bipyramids. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), and one O(6) atom. In the third Bi site, Bi(3) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(2), and one O(5) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form edge-sharing OBi4 tetrahedra. In the second O site, O(2) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form edge-sharing OBi4 tetrahedra. 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(2), and one Bi(3) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Bi(2), one Bi(3), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one V(1) and one Bi(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one V(1) and one V(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one V(1) and one V(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one V(2) and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one V(2), one Bi(2), and one Bi(4) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one V(1) and one Bi(1) atom. is represented by the CIF file [CIF]
data_V2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.648
_cell_length_b   5.945
_cell_length_c   15.531
_cell_angle_alpha   87.507
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   521.060
_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  0.237  0.567  0.491  1.0
  V  V1  1  0.201  0.980  0.003  1.0
  V  V2  1  0.799  0.980  0.503  1.0
  V  V3  1  0.763  0.567  0.991  1.0
  Bi  Bi4  1  0.731  0.483  0.642  1.0
  Bi  Bi5  1  0.301  0.534  0.815  1.0
  Bi  Bi6  1  0.712  0.038  0.167  1.0
  Bi  Bi7  1  0.154  0.089  0.329  1.0
  Bi  Bi8  1  0.288  0.038  0.667  1.0
  Bi  Bi9  1  0.846  0.089  0.829  1.0
  Bi  Bi10  1  0.269  0.483  0.142  1.0
  Bi  Bi11  1  0.699  0.534  0.315  1.0
  O  O12  1  0.527  0.263  0.744  1.0
  O  O13  1  0.037  0.318  0.740  1.0
  O  O14  1  0.597  0.407  0.069  1.0
  O  O15  1  0.510  0.732  0.215  1.0
  O  O16  1  0.949  0.847  0.260  1.0
  O  O17  1  0.699  0.511  0.885  1.0
  O  O18  1  0.580  0.783  0.497  1.0
  O  O19  1  0.095  0.858  0.508  1.0
  O  O20  1  0.490  0.732  0.715  1.0
  O  O21  1  0.051  0.847  0.760  1.0
  O  O22  1  0.240  0.103  0.102  1.0
  O  O23  1  0.420  0.783  0.997  1.0
  O  O24  1  0.797  0.135  0.404  1.0
  O  O25  1  0.760  0.103  0.602  1.0
  O  O26  1  0.023  0.437  0.008  1.0
  O  O27  1  0.473  0.263  0.244  1.0
  O  O28  1  0.963  0.318  0.240  1.0
  O  O29  1  0.203  0.135  0.904  1.0
  O  O30  1  0.403  0.407  0.569  1.0
  O  O31  1  0.977  0.437  0.508  1.0
  O  O32  1  0.301  0.511  0.385  1.0
  O  O33  1  0.905  0.858  0.008  1.0
[/CIF]
.