The crystal structure 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(2), one O(27), one O(7), and one O(9) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(3)O4 tetrahedra and  an edgeedge with one V(2)O5 trigonal bipyramid. In the second V site, V(2) is bonded to one O(1), one O(10), one O(2), one O(28), and one O(8) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(4)O4 tetrahedra and  an edgeedge with one V(1)O5 trigonal bipyramid. In the third V site, V(3) is bonded to one O(11), one O(13), one O(22), and one O(9) atom to form corner-sharing VO4 tetrahedra. In the fourth V site, V(4) is bonded to one O(10), one O(12), one O(14), and one O(23) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(10)O5 square pyramid and  a cornercorner with one V(2)O5 trigonal bipyramid. In the fifth V site, V(5) is bonded in a tetrahedral geometry to one O(15), one O(31), one O(32), and one O(5) atom. In the sixth V site, V(6) is bonded in a 5-coordinate geometry to one O(16), one O(31), one O(32), one O(33), and one O(6) atom. There are twelve inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one O(15), one O(18), one O(20), one O(22), one O(29), and one O(3) atom. In the second Bi site, Bi(2) is bonded in a distorted pentagonal planar geometry to one O(17), one O(21), one O(23), one O(30), and one O(4) atom. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(13), one O(18), one O(25), one O(26), one O(27), and one O(29) atom. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one O(14), one O(17), one O(2), one O(25), one O(26), one O(27), one O(28), and one O(30) atom. In the fifth Bi site, Bi(5) is bonded in a 5-coordinate geometry to one O(13), one O(18), one O(20), one O(29), and one O(3) atom. In the sixth Bi site, Bi(6) is bonded in a 6-coordinate geometry to one O(14), one O(16), one O(17), one O(21), one O(30), and one O(4) atom. In the seventh Bi site, Bi(7) is bonded in a 5-coordinate geometry to one O(11), one O(19), one O(20), one O(24), and one O(3) atom. In the eighth Bi site, Bi(8) is bonded in a 6-coordinate geometry to one O(19), one O(21), one O(24), one O(32), one O(33), and one O(4) atom. In the ninth Bi site, Bi(9) is bonded in a 7-coordinate geometry to one O(19), one O(20), one O(24), one O(3), one O(31), one O(5), and one O(6) atom. In the tenth Bi site, Bi(10) is bonded to one O(12), one O(21), one O(24), one O(4), and one O(6) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(4)O4 tetrahedra. In the eleventh Bi site, Bi(11) is bonded in a 7-coordinate geometry to one O(1), one O(18), one O(22), one O(25), one O(26), one O(29), and one O(7) atom. In the twelfth Bi site, Bi(12) is bonded in a 5-coordinate geometry to one O(17), one O(25), one O(26), one O(30), and one O(8) atom. There are thirty-three inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one V(1), one V(2), and one Bi(11) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one V(1), one V(2), and one Bi(4) atom. In the third O site, O(3) is bonded to one Bi(1), one Bi(5), one Bi(7), and one Bi(9) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the fourth O site, O(4) is bonded to one Bi(10), one Bi(2), one Bi(6), and one Bi(8) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(5) and one Bi(9) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one V(6), one Bi(10), and one Bi(9) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one V(1) and one Bi(11) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one V(2) and one Bi(12) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one V(3) and one Bi(7) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one V(4) and one Bi(10) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one V(3), one Bi(3), and one Bi(5) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one V(4), one Bi(4), and one Bi(6) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one V(5) and one Bi(1) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one V(6) and one Bi(6) atom. In the seventeenth O site, O(17) is bonded to one Bi(12), one Bi(2), one Bi(4), and one Bi(6) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the eighteenth O site, O(18) is bonded to one Bi(1), one Bi(11), one Bi(3), and one Bi(5) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the nineteenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one Bi(7), one Bi(8), and one Bi(9) atom. In the twentieth O site, O(20) is bonded to one Bi(1), one Bi(5), one Bi(7), and one Bi(9) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-first O site, O(21) is bonded to one Bi(10), one Bi(2), one Bi(6), and one Bi(8) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one V(3), one Bi(1), and one Bi(11) atom. In the twenty-third O site, O(23) is bonded in a distorted single-bond geometry to one V(4) and one Bi(2) atom. In the twenty-fourth O site, O(24) is bonded to one Bi(10), one Bi(7), one Bi(8), and one Bi(9) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-fifth O site, O(25) is bonded to one Bi(11), one Bi(12), one Bi(3), and one Bi(4) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-sixth O site, O(26) is bonded to one Bi(11), one Bi(12), one Bi(3), and one Bi(4) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-seventh O site, O(27) is bonded in a distorted single-bond geometry to one V(1), one Bi(3), and one Bi(4) atom. In the twenty-eighth O site, O(28) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Bi(4) atom. In the twenty-ninth O site, O(29) is bonded to one Bi(1), one Bi(11), one Bi(3), and one Bi(5) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the thirtieth O site, O(30) is bonded to one Bi(12), one Bi(2), one Bi(4), and one Bi(6) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the thirty-first O site, O(31) is bonded in a 3-coordinate geometry to one V(5), one V(6), and one Bi(9) atom. In the thirty-second O site, O(32) is bonded in a 3-coordinate geometry to one V(5), one V(6), and one Bi(8) atom. In the thirty-third O site, O(33) is bonded in a distorted single-bond geometry to one V(6) and one Bi(8) atom. is represented by the CIF file [CIF]
data_V2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.816
_cell_length_b   8.088
_cell_length_c   17.043
_cell_angle_alpha   88.909
_cell_angle_beta   89.607
_cell_angle_gamma   109.519
_symmetry_Int_Tables_number   1
_cell_volume   755.438
_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  0.668  0.998  0.064  1.0
  V  V1  1  0.329  0.000  0.933  1.0
  V  V2  1  0.308  0.992  0.234  1.0
  V  V3  1  0.699  0.015  0.764  1.0
  V  V4  1  0.877  0.026  0.431  1.0
  V  V5  1  0.197  0.031  0.564  1.0
  Bi  Bi6  1  0.639  0.686  0.247  1.0
  Bi  Bi7  1  0.019  0.647  0.756  1.0
  Bi  Bi8  1  0.396  0.353  0.088  1.0
  Bi  Bi9  1  0.960  0.331  0.925  1.0
  Bi  Bi10  1  0.981  0.362  0.253  1.0
  Bi  Bi11  1  0.350  0.320  0.755  1.0
  Bi  Bi12  1  0.122  0.683  0.409  1.0
  Bi  Bi13  1  0.535  0.663  0.588  1.0
  Bi  Bi14  1  0.492  0.376  0.424  1.0
  Bi  Bi15  1  0.854  0.338  0.589  1.0
  Bi  Bi16  1  0.033  0.665  0.080  1.0
  Bi  Bi17  1  0.598  0.647  0.917  1.0
  O  O18  1  0.339  0.991  0.044  1.0
  O  O19  1  0.657  0.007  0.952  1.0
  O  O20  1  0.280  0.518  0.330  1.0
  O  O21  1  0.210  0.485  0.672  1.0
  O  O22  1  0.801  0.209  0.410  1.0
  O  O23  1  0.455  0.234  0.549  1.0
  O  O24  1  0.716  0.801  0.071  1.0
  O  O25  1  0.085  0.810  0.924  1.0
  O  O26  1  0.566  0.000  0.174  1.0
  O  O27  1  0.439  0.007  0.822  1.0
  O  O28  1  0.364  0.917  0.323  1.0
  O  O29  1  0.652  0.091  0.673  1.0
  O  O30  1  0.275  0.198  0.237  1.0
  O  O31  1  0.954  0.177  0.801  1.0
  O  O32  1  0.784  0.852  0.370  1.0
  O  O33  1  0.141  0.055  0.659  1.0
  O  O34  1  0.747  0.479  0.837  1.0
  O  O35  1  0.734  0.494  0.165  1.0
  O  O36  1  0.298  0.528  0.493  1.0
  O  O37  1  0.818  0.538  0.325  1.0
  O  O38  1  0.726  0.494  0.671  1.0
  O  O39  1  0.043  0.834  0.201  1.0
  O  O40  1  0.724  0.805  0.764  1.0
  O  O41  1  0.786  0.549  0.505  1.0
  O  O42  1  0.730  0.482  0.002  1.0
  O  O43  1  0.266  0.515  0.000  1.0
  O  O44  1  0.919  0.185  0.070  1.0
  O  O45  1  0.274  0.195  0.926  1.0
  O  O46  1  0.242  0.522  0.164  1.0
  O  O47  1  0.258  0.508  0.837  1.0
  O  O48  1  0.192  0.088  0.436  1.0
  O  O49  1  0.847  0.959  0.534  1.0
  O  O50  1  0.278  0.847  0.555  1.0
[/CIF]
.
The crystal structure 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(2), one O(27), one O(7), and one O(9) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(3)O4 tetrahedra and  an edgeedge with one V(2)O5 trigonal bipyramid. In the second V site, V(2) is bonded to one O(1), one O(10), one O(2), one O(28), and one O(8) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(4)O4 tetrahedra and  an edgeedge with one V(1)O5 trigonal bipyramid. In the third V site, V(3) is bonded to one O(11), one O(13), one O(22), and one O(9) atom to form corner-sharing VO4 tetrahedra. In the fourth V site, V(4) is bonded to one O(10), one O(12), one O(14), and one O(23) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(10)O5 square pyramid and  a cornercorner with one V(2)O5 trigonal bipyramid. In the fifth V site, V(5) is bonded in a tetrahedral geometry to one O(15), one O(31), one O(32), and one O(5) atom. In the sixth V site, V(6) is bonded in a 5-coordinate geometry to one O(16), one O(31), one O(32), one O(33), and one O(6) atom. There are twelve inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one O(15), one O(18), one O(20), one O(22), one O(29), and one O(3) atom. In the second Bi site, Bi(2) is bonded in a distorted pentagonal planar geometry to one O(17), one O(21), one O(23), one O(30), and one O(4) atom. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(13), one O(18), one O(25), one O(26), one O(27), and one O(29) atom. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one O(14), one O(17), one O(2), one O(25), one O(26), one O(27), one O(28), and one O(30) atom. In the fifth Bi site, Bi(5) is bonded in a 5-coordinate geometry to one O(13), one O(18), one O(20), one O(29), and one O(3) atom. In the sixth Bi site, Bi(6) is bonded in a 6-coordinate geometry to one O(14), one O(16), one O(17), one O(21), one O(30), and one O(4) atom. In the seventh Bi site, Bi(7) is bonded in a 5-coordinate geometry to one O(11), one O(19), one O(20), one O(24), and one O(3) atom. In the eighth Bi site, Bi(8) is bonded in a 6-coordinate geometry to one O(19), one O(21), one O(24), one O(32), one O(33), and one O(4) atom. In the ninth Bi site, Bi(9) is bonded in a 7-coordinate geometry to one O(19), one O(20), one O(24), one O(3), one O(31), one O(5), and one O(6) atom. In the tenth Bi site, Bi(10) is bonded to one O(12), one O(21), one O(24), one O(4), and one O(6) atom to form distorted BiO5 square pyramids that share  a cornercorner with one V(4)O4 tetrahedra. In the eleventh Bi site, Bi(11) is bonded in a 7-coordinate geometry to one O(1), one O(18), one O(22), one O(25), one O(26), one O(29), and one O(7) atom. In the twelfth Bi site, Bi(12) is bonded in a 5-coordinate geometry to one O(17), one O(25), one O(26), one O(30), and one O(8) atom. There are thirty-three inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one V(1), one V(2), and one Bi(11) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one V(1), one V(2), and one Bi(4) atom. In the third O site, O(3) is bonded to one Bi(1), one Bi(5), one Bi(7), and one Bi(9) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the fourth O site, O(4) is bonded to one Bi(10), one Bi(2), one Bi(6), and one Bi(8) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(5) and one Bi(9) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one V(6), one Bi(10), and one Bi(9) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one V(1) and one Bi(11) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one V(2) and one Bi(12) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one V(3) and one Bi(7) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one V(4) and one Bi(10) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one V(3), one Bi(3), and one Bi(5) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one V(4), one Bi(4), and one Bi(6) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one V(5) and one Bi(1) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one V(6) and one Bi(6) atom. In the seventeenth O site, O(17) is bonded to one Bi(12), one Bi(2), one Bi(4), and one Bi(6) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the eighteenth O site, O(18) is bonded to one Bi(1), one Bi(11), one Bi(3), and one Bi(5) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the nineteenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one Bi(7), one Bi(8), and one Bi(9) atom. In the twentieth O site, O(20) is bonded to one Bi(1), one Bi(5), one Bi(7), and one Bi(9) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-first O site, O(21) is bonded to one Bi(10), one Bi(2), one Bi(6), and one Bi(8) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one V(3), one Bi(1), and one Bi(11) atom. In the twenty-third O site, O(23) is bonded in a distorted single-bond geometry to one V(4) and one Bi(2) atom. In the twenty-fourth O site, O(24) is bonded to one Bi(10), one Bi(7), one Bi(8), and one Bi(9) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-fifth O site, O(25) is bonded to one Bi(11), one Bi(12), one Bi(3), and one Bi(4) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-sixth O site, O(26) is bonded to one Bi(11), one Bi(12), one Bi(3), and one Bi(4) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the twenty-seventh O site, O(27) is bonded in a distorted single-bond geometry to one V(1), one Bi(3), and one Bi(4) atom. In the twenty-eighth O site, O(28) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Bi(4) atom. In the twenty-ninth O site, O(29) is bonded to one Bi(1), one Bi(11), one Bi(3), and one Bi(5) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the thirtieth O site, O(30) is bonded to one Bi(12), one Bi(2), one Bi(4), and one Bi(6) atom to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the thirty-first O site, O(31) is bonded in a 3-coordinate geometry to one V(5), one V(6), and one Bi(9) atom. In the thirty-second O site, O(32) is bonded in a 3-coordinate geometry to one V(5), one V(6), and one Bi(8) atom. In the thirty-third O site, O(33) is bonded in a distorted single-bond geometry to one V(6) and one Bi(8) atom. is represented by the CIF file [CIF]
data_V2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.816
_cell_length_b   8.088
_cell_length_c   17.043
_cell_angle_alpha   88.909
_cell_angle_beta   89.607
_cell_angle_gamma   109.519
_symmetry_Int_Tables_number   1
_cell_volume   755.438
_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  0.668  0.998  0.064  1.0
  V  V1  1  0.329  0.000  0.933  1.0
  V  V2  1  0.308  0.992  0.234  1.0
  V  V3  1  0.699  0.015  0.764  1.0
  V  V4  1  0.877  0.026  0.431  1.0
  V  V5  1  0.197  0.031  0.564  1.0
  Bi  Bi6  1  0.639  0.686  0.247  1.0
  Bi  Bi7  1  0.019  0.647  0.756  1.0
  Bi  Bi8  1  0.396  0.353  0.088  1.0
  Bi  Bi9  1  0.960  0.331  0.925  1.0
  Bi  Bi10  1  0.981  0.362  0.253  1.0
  Bi  Bi11  1  0.350  0.320  0.755  1.0
  Bi  Bi12  1  0.122  0.683  0.409  1.0
  Bi  Bi13  1  0.535  0.663  0.588  1.0
  Bi  Bi14  1  0.492  0.376  0.424  1.0
  Bi  Bi15  1  0.854  0.338  0.589  1.0
  Bi  Bi16  1  0.033  0.665  0.080  1.0
  Bi  Bi17  1  0.598  0.647  0.917  1.0
  O  O18  1  0.339  0.991  0.044  1.0
  O  O19  1  0.657  0.007  0.952  1.0
  O  O20  1  0.280  0.518  0.330  1.0
  O  O21  1  0.210  0.485  0.672  1.0
  O  O22  1  0.801  0.209  0.410  1.0
  O  O23  1  0.455  0.234  0.549  1.0
  O  O24  1  0.716  0.801  0.071  1.0
  O  O25  1  0.085  0.810  0.924  1.0
  O  O26  1  0.566  0.000  0.174  1.0
  O  O27  1  0.439  0.007  0.822  1.0
  O  O28  1  0.364  0.917  0.323  1.0
  O  O29  1  0.652  0.091  0.673  1.0
  O  O30  1  0.275  0.198  0.237  1.0
  O  O31  1  0.954  0.177  0.801  1.0
  O  O32  1  0.784  0.852  0.370  1.0
  O  O33  1  0.141  0.055  0.659  1.0
  O  O34  1  0.747  0.479  0.837  1.0
  O  O35  1  0.734  0.494  0.165  1.0
  O  O36  1  0.298  0.528  0.493  1.0
  O  O37  1  0.818  0.538  0.325  1.0
  O  O38  1  0.726  0.494  0.671  1.0
  O  O39  1  0.043  0.834  0.201  1.0
  O  O40  1  0.724  0.805  0.764  1.0
  O  O41  1  0.786  0.549  0.505  1.0
  O  O42  1  0.730  0.482  0.002  1.0
  O  O43  1  0.266  0.515  0.000  1.0
  O  O44  1  0.919  0.185  0.070  1.0
  O  O45  1  0.274  0.195  0.926  1.0
  O  O46  1  0.242  0.522  0.164  1.0
  O  O47  1  0.258  0.508  0.837  1.0
  O  O48  1  0.192  0.088  0.436  1.0
  O  O49  1  0.847  0.959  0.534  1.0
  O  O50  1  0.278  0.847  0.555  1.0
[/CIF]
.