The material described by Bi4V2O11 crystallizes in the triclinic P1 space group. There are six inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(16), one O(4), and one O(6) atom to form distorted VO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid and  a cornercorner with one V(3)O5 trigonal bipyramid. In the second V site, V(2) is bonded to one O(14), one O(17), one O(3), and one O(5) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid,  a cornercorner with one V(3)O5 trigonal bipyramid, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the third V site, V(3) is bonded to one O(1), one O(13), one O(18), one O(2), and one O(5) atom to form distorted corner-sharing VO5 trigonal bipyramids. In the fourth V site, V(4) is bonded to one O(15), one O(17), one O(20), one O(21), and one O(32) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O5 square pyramid,  a cornercorner with one V(2)O4 tetrahedra, and  a cornercorner with one V(5)O5 trigonal bipyramid. In the fifth V site, V(5) is bonded to one O(15), one O(19), one O(29), one O(31), and one O(33) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(6)O4 tetrahedra and  a cornercorner with one V(4)O5 trigonal bipyramid. In the sixth V site, V(6) is bonded to one O(18), one O(22), one O(30), and one O(33) atom to form corner-sharing VO4 tetrahedra. There are twelve inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(20), one O(26), one O(28), one O(3), and one O(4) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(19), one O(2), one O(23), one O(24), one O(3), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 3-coordinate geometry to one O(2), one O(27), and one O(7) atom. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(13), one O(23), one O(29), and one O(8) atom. In the fifth Bi site, Bi(5) is bonded in a 5-coordinate geometry to one O(11), one O(12), one O(14), one O(16), and one O(6) atom. In the sixth Bi site, Bi(6) is bonded in a 5-coordinate geometry to one O(10), one O(13), one O(16), one O(25), and one O(30) atom. In the seventh Bi site, Bi(7) is bonded in a distorted rectangular see-saw-like geometry to one O(20), one O(21), one O(22), and one O(26) atom. In the eighth Bi site, Bi(8) is bonded in a 3-coordinate geometry to one O(15), one O(19), one O(20), and one O(28) atom. In the ninth Bi site, Bi(9) is bonded in a bent 150 degrees geometry to one O(27) and one O(7) atom. In the tenth Bi site, Bi(10) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(25), one O(26), one O(30), one O(32), and one O(6) atom. In the eleventh Bi site, Bi(11) is bonded in a 4-coordinate geometry to one O(23), one O(27), one O(31), one O(7), and one O(8) atom. In the twelfth Bi site, Bi(12) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(23), one O(24), one O(31), one O(32), and one O(9) atom. There are thirty-three inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one V(1) and one V(3) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one V(3), one Bi(2), and one Bi(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(2), one Bi(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one V(1) and one Bi(1) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(2) and one V(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one Bi(10), and one Bi(5) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Bi(11), one Bi(3), one Bi(9), and one O(8) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Bi(11), one Bi(4), and one O(7) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Bi(12), one Bi(2), and one O(11) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Bi(10), one Bi(6), and one O(12) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Bi(12), one Bi(5), and one O(9) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(5), and one O(10) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one V(3), one Bi(4), and one Bi(6) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one V(2), one Bi(12), and one Bi(5) atom. In the fifteenth O site, O(15) is bonded in a T-shaped geometry to one V(4), one V(5), and one Bi(8) atom. In the sixteenth O site, O(16) is bonded in a trigonal non-coplanar geometry to one V(1), one Bi(5), and one Bi(6) atom. In the seventeenth O site, O(17) is bonded in a linear geometry to one V(2) and one V(4) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one V(3) and one V(6) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one V(5), one Bi(2), and one Bi(8) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one V(4), one Bi(1), one Bi(7), and one Bi(8) atom. In the twenty-first O site, O(21) is bonded in a distorted water-like geometry to one V(4) and one Bi(7) atom. In the twenty-second O site, O(22) is bonded in a bent 120 degrees geometry to one V(6) and one Bi(7) atom. In the twenty-third O site, O(23) is bonded in a distorted tetrahedral geometry to one Bi(11), one Bi(12), one Bi(2), and one Bi(4) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Bi(12), one Bi(2), and one O(28) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(6), and one O(26) atom. In the twenty-sixth O site, O(26) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(10), one Bi(7), and one O(25) atom. In the twenty-seventh O site, O(27) is bonded in a trigonal planar geometry to one Bi(11), one Bi(3), and one Bi(9) atom. In the twenty-eighth O site, O(28) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(8), and one O(24) atom. In the twenty-ninth O site, O(29) is bonded in a distorted bent 150 degrees geometry to one V(5) and one Bi(4) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one V(6), one Bi(10), and one Bi(6) atom. In the thirty-first O site, O(31) is bonded in a distorted trigonal non-coplanar geometry to one V(5), one Bi(11), and one Bi(12) atom. In the thirty-second O site, O(32) is bonded in a distorted single-bond geometry to one V(4), one Bi(10), and one Bi(12) atom. In the thirty-third O site, O(33) is bonded in a distorted bent 120 degrees geometry to one V(5) and one V(6) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_V2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.422
_cell_length_b   9.080
_cell_length_c   12.293
_cell_angle_alpha   94.799
_cell_angle_beta   90.057
_cell_angle_gamma   76.521
_symmetry_Int_Tables_number   1
_cell_volume   802.662
_cell_formula_units_Z   3
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  0.199  0.977  0.429  1.0
  V  V1  1  0.239  0.995  0.056  1.0
  V  V2  1  0.285  0.002  0.742  1.0
  V  V3  1  0.659  0.989  0.214  1.0
  V  V4  1  0.780  0.982  0.898  1.0
  V  V5  1  0.735  0.004  0.629  1.0
  Bi  Bi6  1  0.982  0.304  0.253  1.0
  Bi  Bi7  1  0.996  0.329  0.920  1.0
  Bi  Bi8  1  0.130  0.298  0.603  1.0
  Bi  Bi9  1  0.493  0.654  0.865  1.0
  Bi  Bi10  1  0.364  0.684  0.259  1.0
  Bi  Bi11  1  0.477  0.693  0.560  1.0
  Bi  Bi12  1  0.584  0.252  0.416  1.0
  Bi  Bi13  1  0.578  0.259  0.066  1.0
  Bi  Bi14  1  0.620  0.401  0.682  1.0
  Bi  Bi15  1  0.921  0.691  0.406  1.0
  Bi  Bi16  1  0.981  0.677  0.755  1.0
  Bi  Bi17  1  0.979  0.688  0.057  1.0
  O  O18  1  0.199  0.986  0.573  1.0
  O  O19  1  0.111  0.205  0.755  1.0
  O  O20  1  0.068  0.162  0.093  1.0
  O  O21  1  0.118  0.163  0.380  1.0
  O  O22  1  0.276  0.015  0.919  1.0
  O  O23  1  0.087  0.842  0.342  1.0
  O  O24  1  0.281  0.463  0.691  1.0
  O  O25  1  0.232  0.509  0.810  1.0
  O  O26  1  0.238  0.489  0.027  1.0
  O  O27  1  0.223  0.587  0.479  1.0
  O  O28  1  0.216  0.495  0.149  1.0
  O  O29  1  0.263  0.521  0.365  1.0
  O  O30  1  0.323  0.783  0.740  1.0
  O  O31  1  0.200  0.824  0.102  1.0
  O  O32  1  0.742  0.020  0.060  1.0
  O  O33  1  0.421  0.821  0.404  1.0
  O  O34  1  0.427  0.012  0.137  1.0
  O  O35  1  0.497  0.055  0.680  1.0
  O  O36  1  0.747  0.216  0.917  1.0
  O  O37  1  0.743  0.184  0.253  1.0
  O  O38  1  0.515  0.054  0.339  1.0
  O  O39  1  0.780  0.114  0.518  1.0
  O  O40  1  0.859  0.566  0.879  1.0
  O  O41  1  0.781  0.499  0.054  1.0
  O  O42  1  0.653  0.564  0.399  1.0
  O  O43  1  0.797  0.424  0.410  1.0
  O  O44  1  0.895  0.469  0.653  1.0
  O  O45  1  0.718  0.432  0.147  1.0
  O  O46  1  0.635  0.863  0.856  1.0
  O  O47  1  0.782  0.801  0.563  1.0
  O  O48  1  0.994  0.828  0.916  1.0
  O  O49  1  0.775  0.803  0.232  1.0
  O  O50  1  0.878  0.986  0.748  1.0
[/CIF]
.
The material described by Bi4V2O11 crystallizes in the triclinic P1 space group. There are six inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(16), one O(4), and one O(6) atom to form distorted VO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid and  a cornercorner with one V(3)O5 trigonal bipyramid. In the second V site, V(2) is bonded to one O(14), one O(17), one O(3), and one O(5) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid,  a cornercorner with one V(3)O5 trigonal bipyramid, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the third V site, V(3) is bonded to one O(1), one O(13), one O(18), one O(2), and one O(5) atom to form distorted corner-sharing VO5 trigonal bipyramids. In the fourth V site, V(4) is bonded to one O(15), one O(17), one O(20), one O(21), and one O(32) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O5 square pyramid,  a cornercorner with one V(2)O4 tetrahedra, and  a cornercorner with one V(5)O5 trigonal bipyramid. In the fifth V site, V(5) is bonded to one O(15), one O(19), one O(29), one O(31), and one O(33) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(6)O4 tetrahedra and  a cornercorner with one V(4)O5 trigonal bipyramid. In the sixth V site, V(6) is bonded to one O(18), one O(22), one O(30), and one O(33) atom to form corner-sharing VO4 tetrahedra. There are twelve inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(20), one O(26), one O(28), one O(3), and one O(4) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(19), one O(2), one O(23), one O(24), one O(3), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 3-coordinate geometry to one O(2), one O(27), and one O(7) atom. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(13), one O(23), one O(29), and one O(8) atom. In the fifth Bi site, Bi(5) is bonded in a 5-coordinate geometry to one O(11), one O(12), one O(14), one O(16), and one O(6) atom. In the sixth Bi site, Bi(6) is bonded in a 5-coordinate geometry to one O(10), one O(13), one O(16), one O(25), and one O(30) atom. In the seventh Bi site, Bi(7) is bonded in a distorted rectangular see-saw-like geometry to one O(20), one O(21), one O(22), and one O(26) atom. In the eighth Bi site, Bi(8) is bonded in a 3-coordinate geometry to one O(15), one O(19), one O(20), and one O(28) atom. In the ninth Bi site, Bi(9) is bonded in a bent 150 degrees geometry to one O(27) and one O(7) atom. In the tenth Bi site, Bi(10) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(25), one O(26), one O(30), one O(32), and one O(6) atom. In the eleventh Bi site, Bi(11) is bonded in a 4-coordinate geometry to one O(23), one O(27), one O(31), one O(7), and one O(8) atom. In the twelfth Bi site, Bi(12) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(23), one O(24), one O(31), one O(32), and one O(9) atom. There are thirty-three inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one V(1) and one V(3) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one V(3), one Bi(2), and one Bi(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(2), one Bi(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one V(1) and one Bi(1) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(2) and one V(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one Bi(10), and one Bi(5) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Bi(11), one Bi(3), one Bi(9), and one O(8) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Bi(11), one Bi(4), and one O(7) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Bi(12), one Bi(2), and one O(11) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Bi(10), one Bi(6), and one O(12) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Bi(12), one Bi(5), and one O(9) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(5), and one O(10) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one V(3), one Bi(4), and one Bi(6) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one V(2), one Bi(12), and one Bi(5) atom. In the fifteenth O site, O(15) is bonded in a T-shaped geometry to one V(4), one V(5), and one Bi(8) atom. In the sixteenth O site, O(16) is bonded in a trigonal non-coplanar geometry to one V(1), one Bi(5), and one Bi(6) atom. In the seventeenth O site, O(17) is bonded in a linear geometry to one V(2) and one V(4) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one V(3) and one V(6) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one V(5), one Bi(2), and one Bi(8) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one V(4), one Bi(1), one Bi(7), and one Bi(8) atom. In the twenty-first O site, O(21) is bonded in a distorted water-like geometry to one V(4) and one Bi(7) atom. In the twenty-second O site, O(22) is bonded in a bent 120 degrees geometry to one V(6) and one Bi(7) atom. In the twenty-third O site, O(23) is bonded in a distorted tetrahedral geometry to one Bi(11), one Bi(12), one Bi(2), and one Bi(4) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Bi(12), one Bi(2), and one O(28) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(6), and one O(26) atom. In the twenty-sixth O site, O(26) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(10), one Bi(7), and one O(25) atom. In the twenty-seventh O site, O(27) is bonded in a trigonal planar geometry to one Bi(11), one Bi(3), and one Bi(9) atom. In the twenty-eighth O site, O(28) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(8), and one O(24) atom. In the twenty-ninth O site, O(29) is bonded in a distorted bent 150 degrees geometry to one V(5) and one Bi(4) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one V(6), one Bi(10), and one Bi(6) atom. In the thirty-first O site, O(31) is bonded in a distorted trigonal non-coplanar geometry to one V(5), one Bi(11), and one Bi(12) atom. In the thirty-second O site, O(32) is bonded in a distorted single-bond geometry to one V(4), one Bi(10), and one Bi(12) atom. In the thirty-third O site, O(33) is bonded in a distorted bent 120 degrees geometry to one V(5) and one V(6) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_V2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.422
_cell_length_b   9.080
_cell_length_c   12.293
_cell_angle_alpha   94.799
_cell_angle_beta   90.057
_cell_angle_gamma   76.521
_symmetry_Int_Tables_number   1
_cell_volume   802.662
_cell_formula_units_Z   3
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  0.199  0.977  0.429  1.0
  V  V1  1  0.239  0.995  0.056  1.0
  V  V2  1  0.285  0.002  0.742  1.0
  V  V3  1  0.659  0.989  0.214  1.0
  V  V4  1  0.780  0.982  0.898  1.0
  V  V5  1  0.735  0.004  0.629  1.0
  Bi  Bi6  1  0.982  0.304  0.253  1.0
  Bi  Bi7  1  0.996  0.329  0.920  1.0
  Bi  Bi8  1  0.130  0.298  0.603  1.0
  Bi  Bi9  1  0.493  0.654  0.865  1.0
  Bi  Bi10  1  0.364  0.684  0.259  1.0
  Bi  Bi11  1  0.477  0.693  0.560  1.0
  Bi  Bi12  1  0.584  0.252  0.416  1.0
  Bi  Bi13  1  0.578  0.259  0.066  1.0
  Bi  Bi14  1  0.620  0.401  0.682  1.0
  Bi  Bi15  1  0.921  0.691  0.406  1.0
  Bi  Bi16  1  0.981  0.677  0.755  1.0
  Bi  Bi17  1  0.979  0.688  0.057  1.0
  O  O18  1  0.199  0.986  0.573  1.0
  O  O19  1  0.111  0.205  0.755  1.0
  O  O20  1  0.068  0.162  0.093  1.0
  O  O21  1  0.118  0.163  0.380  1.0
  O  O22  1  0.276  0.015  0.919  1.0
  O  O23  1  0.087  0.842  0.342  1.0
  O  O24  1  0.281  0.463  0.691  1.0
  O  O25  1  0.232  0.509  0.810  1.0
  O  O26  1  0.238  0.489  0.027  1.0
  O  O27  1  0.223  0.587  0.479  1.0
  O  O28  1  0.216  0.495  0.149  1.0
  O  O29  1  0.263  0.521  0.365  1.0
  O  O30  1  0.323  0.783  0.740  1.0
  O  O31  1  0.200  0.824  0.102  1.0
  O  O32  1  0.742  0.020  0.060  1.0
  O  O33  1  0.421  0.821  0.404  1.0
  O  O34  1  0.427  0.012  0.137  1.0
  O  O35  1  0.497  0.055  0.680  1.0
  O  O36  1  0.747  0.216  0.917  1.0
  O  O37  1  0.743  0.184  0.253  1.0
  O  O38  1  0.515  0.054  0.339  1.0
  O  O39  1  0.780  0.114  0.518  1.0
  O  O40  1  0.859  0.566  0.879  1.0
  O  O41  1  0.781  0.499  0.054  1.0
  O  O42  1  0.653  0.564  0.399  1.0
  O  O43  1  0.797  0.424  0.410  1.0
  O  O44  1  0.895  0.469  0.653  1.0
  O  O45  1  0.718  0.432  0.147  1.0
  O  O46  1  0.635  0.863  0.856  1.0
  O  O47  1  0.782  0.801  0.563  1.0
  O  O48  1  0.994  0.828  0.916  1.0
  O  O49  1  0.775  0.803  0.232  1.0
  O  O50  1  0.878  0.986  0.748  1.0
[/CIF]
.