The compound described by Bi11PO20 crystallizes in the triclinic P1 space group. There are eleven inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(5), and one O(7) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(18), one O(3), one O(7), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 3-coordinate geometry to one O(10), one O(11), one O(15), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(11), one O(3), one O(4), and one O(8) atom. In the fifth Bi site, Bi(5) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(14), one O(4), and one O(5) atom. In the sixth Bi site, Bi(6) is bonded in a 5-coordinate geometry to one O(13), one O(18), one O(19), one O(6), and one O(8) atom. In the seventh Bi site, Bi(7) is bonded in a distorted rectangular see-saw-like geometry to one O(12), one O(13), one O(14), and one O(7) atom. In the eighth Bi site, Bi(8) is bonded in a 4-coordinate geometry to one O(12), one O(13), one O(2), and one O(20) atom. In the ninth Bi site, Bi(9) is bonded in a 4-coordinate geometry to one O(1), one O(14), one O(15), and one O(19) atom. In the tenth Bi site, Bi(10) is bonded in a 5-coordinate geometry to one O(15), one O(17), one O(20), one O(4), and one O(8) atom. In the eleventh Bi site, Bi(11) is bonded in a 5-coordinate geometry to one O(11), one O(17), one O(18), one O(19), and one O(2) atom. P(1) is bonded in a tetrahedral geometry to one O(1), one O(16), one O(17), and one O(6) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Bi(4), one Bi(9), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(11), and one Bi(8) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Bi(10), one Bi(4), and one Bi(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Bi(1) and one Bi(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Bi(6) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(7) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Bi(10), one Bi(4), and one Bi(6) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Bi(2) and one Bi(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Bi(3), one Bi(4), and one Bi(5) atom. In the eleventh O site, O(11) is bonded in a trigonal non-coplanar geometry to one Bi(11), one Bi(3), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Bi(2), one Bi(7), and one Bi(8) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Bi(6), one Bi(7), and one Bi(8) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Bi(5), one Bi(7), and one Bi(9) atom. In the fifteenth O site, O(15) is bonded in a trigonal non-coplanar geometry to one Bi(10), one Bi(3), and one Bi(9) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one Bi(2) and one P(1) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to one Bi(10), one Bi(11), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal non-coplanar geometry to one Bi(11), one Bi(2), and one Bi(6) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Bi(11), one Bi(6), and one Bi(9) atom. In the twentieth O site, O(20) is bonded in a distorted bent 120 degrees geometry to one Bi(10) and one Bi(8) atom. is represented by the CIF file [CIF]
data_Bi11PO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.810
_cell_length_b   8.954
_cell_length_c   8.971
_cell_angle_alpha   109.782
_cell_angle_beta   110.491
_cell_angle_gamma   107.714
_symmetry_Int_Tables_number   1
_cell_volume   547.349
_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
  Bi  Bi0  1  0.298  0.144  0.495  1.0
  Bi  Bi1  1  0.720  0.214  0.861  1.0
  Bi  Bi2  1  0.159  0.498  0.288  1.0
  Bi  Bi3  1  0.212  0.858  0.708  1.0
  Bi  Bi4  1  0.474  0.625  0.786  1.0
  Bi  Bi5  1  0.491  0.303  0.149  1.0
  Bi  Bi6  1  0.809  0.490  0.667  1.0
  Bi  Bi7  1  0.852  0.151  0.374  1.0
  Bi  Bi8  1  0.666  0.803  0.522  1.0
  Bi  Bi9  1  0.340  0.824  0.126  1.0
  Bi  Bi10  1  0.851  0.699  0.204  1.0
  P  P11  1  0.003  0.994  0.003  1.0
  O  O12  1  0.988  0.959  0.813  1.0
  O  O13  1  0.003  0.996  0.412  1.0
  O  O14  1  0.371  0.117  0.742  1.0
  O  O15  1  0.240  0.651  0.846  1.0
  O  O16  1  0.244  0.365  0.571  1.0
  O  O17  1  0.184  0.167  0.164  1.0
  O  O18  1  0.626  0.379  0.753  1.0
  O  O19  1  0.408  0.014  0.010  1.0
  O  O20  1  0.994  0.444  0.011  1.0
  O  O21  1  0.391  0.758  0.640  1.0
  O  O22  1  0.117  0.738  0.370  1.0
  O  O23  1  0.837  0.228  0.625  1.0
  O  O24  1  0.622  0.274  0.379  1.0
  O  O25  1  0.603  0.598  0.602  1.0
  O  O26  1  0.388  0.631  0.264  1.0
  O  O27  1  0.834  0.017  0.003  1.0
  O  O28  1  0.999  0.826  0.024  1.0
  O  O29  1  0.736  0.365  0.116  1.0
  O  O30  1  0.768  0.646  0.393  1.0
  O  O31  1  0.630  0.880  0.237  1.0
[/CIF]
.
The compound described by Bi11PO20 crystallizes in the triclinic P1 space group. There are eleven inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(5), and one O(7) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(18), one O(3), one O(7), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 3-coordinate geometry to one O(10), one O(11), one O(15), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(11), one O(3), one O(4), and one O(8) atom. In the fifth Bi site, Bi(5) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(14), one O(4), and one O(5) atom. In the sixth Bi site, Bi(6) is bonded in a 5-coordinate geometry to one O(13), one O(18), one O(19), one O(6), and one O(8) atom. In the seventh Bi site, Bi(7) is bonded in a distorted rectangular see-saw-like geometry to one O(12), one O(13), one O(14), and one O(7) atom. In the eighth Bi site, Bi(8) is bonded in a 4-coordinate geometry to one O(12), one O(13), one O(2), and one O(20) atom. In the ninth Bi site, Bi(9) is bonded in a 4-coordinate geometry to one O(1), one O(14), one O(15), and one O(19) atom. In the tenth Bi site, Bi(10) is bonded in a 5-coordinate geometry to one O(15), one O(17), one O(20), one O(4), and one O(8) atom. In the eleventh Bi site, Bi(11) is bonded in a 5-coordinate geometry to one O(11), one O(17), one O(18), one O(19), and one O(2) atom. P(1) is bonded in a tetrahedral geometry to one O(1), one O(16), one O(17), and one O(6) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Bi(4), one Bi(9), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(11), and one Bi(8) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Bi(10), one Bi(4), and one Bi(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Bi(1) and one Bi(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Bi(6) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(7) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Bi(10), one Bi(4), and one Bi(6) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Bi(2) and one Bi(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Bi(3), one Bi(4), and one Bi(5) atom. In the eleventh O site, O(11) is bonded in a trigonal non-coplanar geometry to one Bi(11), one Bi(3), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Bi(2), one Bi(7), and one Bi(8) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Bi(6), one Bi(7), and one Bi(8) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Bi(5), one Bi(7), and one Bi(9) atom. In the fifteenth O site, O(15) is bonded in a trigonal non-coplanar geometry to one Bi(10), one Bi(3), and one Bi(9) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one Bi(2) and one P(1) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to one Bi(10), one Bi(11), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal non-coplanar geometry to one Bi(11), one Bi(2), and one Bi(6) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Bi(11), one Bi(6), and one Bi(9) atom. In the twentieth O site, O(20) is bonded in a distorted bent 120 degrees geometry to one Bi(10) and one Bi(8) atom. is represented by the CIF file [CIF]
data_Bi11PO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.810
_cell_length_b   8.954
_cell_length_c   8.971
_cell_angle_alpha   109.782
_cell_angle_beta   110.491
_cell_angle_gamma   107.714
_symmetry_Int_Tables_number   1
_cell_volume   547.349
_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
  Bi  Bi0  1  0.298  0.144  0.495  1.0
  Bi  Bi1  1  0.720  0.214  0.861  1.0
  Bi  Bi2  1  0.159  0.498  0.288  1.0
  Bi  Bi3  1  0.212  0.858  0.708  1.0
  Bi  Bi4  1  0.474  0.625  0.786  1.0
  Bi  Bi5  1  0.491  0.303  0.149  1.0
  Bi  Bi6  1  0.809  0.490  0.667  1.0
  Bi  Bi7  1  0.852  0.151  0.374  1.0
  Bi  Bi8  1  0.666  0.803  0.522  1.0
  Bi  Bi9  1  0.340  0.824  0.126  1.0
  Bi  Bi10  1  0.851  0.699  0.204  1.0
  P  P11  1  0.003  0.994  0.003  1.0
  O  O12  1  0.988  0.959  0.813  1.0
  O  O13  1  0.003  0.996  0.412  1.0
  O  O14  1  0.371  0.117  0.742  1.0
  O  O15  1  0.240  0.651  0.846  1.0
  O  O16  1  0.244  0.365  0.571  1.0
  O  O17  1  0.184  0.167  0.164  1.0
  O  O18  1  0.626  0.379  0.753  1.0
  O  O19  1  0.408  0.014  0.010  1.0
  O  O20  1  0.994  0.444  0.011  1.0
  O  O21  1  0.391  0.758  0.640  1.0
  O  O22  1  0.117  0.738  0.370  1.0
  O  O23  1  0.837  0.228  0.625  1.0
  O  O24  1  0.622  0.274  0.379  1.0
  O  O25  1  0.603  0.598  0.602  1.0
  O  O26  1  0.388  0.631  0.264  1.0
  O  O27  1  0.834  0.017  0.003  1.0
  O  O28  1  0.999  0.826  0.024  1.0
  O  O29  1  0.736  0.365  0.116  1.0
  O  O30  1  0.768  0.646  0.393  1.0
  O  O31  1  0.630  0.880  0.237  1.0
[/CIF]
.