The crystal structure described by Bi7F11O5 crystallizes in the monoclinic C2 space group. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one F(1), one F(2), one F(5), and one F(6) atom. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one O(2), one O(3), one F(2), one F(5), one F(6), and two equivalent F(3) atoms. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent F(2), and two equivalent F(3) atoms. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one O(1), one O(2), one F(1), one F(2), one F(5), one F(6), and two equivalent F(4) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Bi(1) and two equivalent Bi(4) atoms to form OBi4 tetrahedra that share corners with four equivalent F(2)Bi4 tetrahedra, edges with two equivalent O(2)Bi4 tetrahedra, and edges with two equivalent F(1)Bi4 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 OBi4 tetrahedra that share  a cornercorner with one O(2)Bi4 tetrahedra,  a cornercorner with one F(2)Bi4 tetrahedra, corners with two equivalent F(1)Bi4 tetrahedra,  an edgeedge with one O(1)Bi4 tetrahedra, and edges with two equivalent F(2)Bi4 tetrahedra. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. There are six inequivalent F sites. In the first F site, F(6) is bonded in a trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. In the second F site, F(1) is bonded to two equivalent Bi(1) and two equivalent Bi(4) atoms to form FBi4 tetrahedra that share corners with four equivalent O(2)Bi4 tetrahedra, edges with two equivalent O(1)Bi4 tetrahedra, and edges with two equivalent F(2)Bi4 tetrahedra. In the third F site, F(2) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form distorted FBi4 tetrahedra that share  a cornercorner with one O(2)Bi4 tetrahedra,  a cornercorner with one F(2)Bi4 tetrahedra, corners with two equivalent O(1)Bi4 tetrahedra,  an edgeedge with one F(1)Bi4 tetrahedra, and edges with two equivalent O(2)Bi4 tetrahedra. In the fourth F site, F(3) is bonded in a distorted trigonal planar geometry to one Bi(3) and two equivalent Bi(2) atoms. In the fifth F site, F(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Bi(4) atoms. In the sixth F site, F(5) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. is represented by the CIF card [CIF]
data_Bi7O5F11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.267
_cell_length_b   7.267
_cell_length_c   9.149
_cell_angle_alpha   84.799
_cell_angle_beta   84.799
_cell_angle_gamma   44.590
_symmetry_Int_Tables_number   1
_cell_volume   337.535
_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  0.570  0.570  0.789  1.0
  Bi  Bi1  1  0.430  0.430  0.211  1.0
  Bi  Bi2  1  0.319  0.294  0.640  1.0
  Bi  Bi3  1  0.706  0.681  0.360  1.0
  Bi  Bi4  1  0.103  0.897  0.500  1.0
  Bi  Bi5  1  0.954  0.793  0.921  1.0
  Bi  Bi6  1  0.207  0.046  0.079  1.0
  O  O7  1  0.296  0.704  0.000  1.0
  O  O8  1  0.224  0.658  0.725  1.0
  O  O9  1  0.342  0.776  0.275  1.0
  O  O10  1  0.484  0.733  0.552  1.0
  O  O11  1  0.267  0.516  0.448  1.0
  F  F12  1  0.803  0.197  0.000  1.0
  F  F13  1  0.716  0.165  0.719  1.0
  F  F14  1  0.835  0.284  0.281  1.0
  F  F15  1  0.686  0.961  0.481  1.0
  F  F16  1  0.039  0.314  0.519  1.0
  F  F17  1  0.642  0.738  0.036  1.0
  F  F18  1  0.262  0.358  0.964  1.0
  F  F19  1  0.275  0.011  0.810  1.0
  F  F20  1  0.989  0.725  0.190  1.0
  F  F21  1  0.891  0.616  0.743  1.0
  F  F22  1  0.384  0.109  0.257  1.0
[/CIF]
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The crystal structure described by Bi7F11O5 crystallizes in the monoclinic C2 space group. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one F(1), one F(2), one F(5), and one F(6) atom. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one O(2), one O(3), one F(2), one F(5), one F(6), and two equivalent F(3) atoms. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent F(2), and two equivalent F(3) atoms. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one O(1), one O(2), one F(1), one F(2), one F(5), one F(6), and two equivalent F(4) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Bi(1) and two equivalent Bi(4) atoms to form OBi4 tetrahedra that share corners with four equivalent F(2)Bi4 tetrahedra, edges with two equivalent O(2)Bi4 tetrahedra, and edges with two equivalent F(1)Bi4 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 OBi4 tetrahedra that share  a cornercorner with one O(2)Bi4 tetrahedra,  a cornercorner with one F(2)Bi4 tetrahedra, corners with two equivalent F(1)Bi4 tetrahedra,  an edgeedge with one O(1)Bi4 tetrahedra, and edges with two equivalent F(2)Bi4 tetrahedra. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. There are six inequivalent F sites. In the first F site, F(6) is bonded in a trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. In the second F site, F(1) is bonded to two equivalent Bi(1) and two equivalent Bi(4) atoms to form FBi4 tetrahedra that share corners with four equivalent O(2)Bi4 tetrahedra, edges with two equivalent O(1)Bi4 tetrahedra, and edges with two equivalent F(2)Bi4 tetrahedra. In the third F site, F(2) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form distorted FBi4 tetrahedra that share  a cornercorner with one O(2)Bi4 tetrahedra,  a cornercorner with one F(2)Bi4 tetrahedra, corners with two equivalent O(1)Bi4 tetrahedra,  an edgeedge with one F(1)Bi4 tetrahedra, and edges with two equivalent O(2)Bi4 tetrahedra. In the fourth F site, F(3) is bonded in a distorted trigonal planar geometry to one Bi(3) and two equivalent Bi(2) atoms. In the fifth F site, F(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Bi(4) atoms. In the sixth F site, F(5) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(4) atom. is represented by the CIF card [CIF]
data_Bi7O5F11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.267
_cell_length_b   7.267
_cell_length_c   9.149
_cell_angle_alpha   84.799
_cell_angle_beta   84.799
_cell_angle_gamma   44.590
_symmetry_Int_Tables_number   1
_cell_volume   337.535
_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  0.570  0.570  0.789  1.0
  Bi  Bi1  1  0.430  0.430  0.211  1.0
  Bi  Bi2  1  0.319  0.294  0.640  1.0
  Bi  Bi3  1  0.706  0.681  0.360  1.0
  Bi  Bi4  1  0.103  0.897  0.500  1.0
  Bi  Bi5  1  0.954  0.793  0.921  1.0
  Bi  Bi6  1  0.207  0.046  0.079  1.0
  O  O7  1  0.296  0.704  0.000  1.0
  O  O8  1  0.224  0.658  0.725  1.0
  O  O9  1  0.342  0.776  0.275  1.0
  O  O10  1  0.484  0.733  0.552  1.0
  O  O11  1  0.267  0.516  0.448  1.0
  F  F12  1  0.803  0.197  0.000  1.0
  F  F13  1  0.716  0.165  0.719  1.0
  F  F14  1  0.835  0.284  0.281  1.0
  F  F15  1  0.686  0.961  0.481  1.0
  F  F16  1  0.039  0.314  0.519  1.0
  F  F17  1  0.642  0.738  0.036  1.0
  F  F18  1  0.262  0.358  0.964  1.0
  F  F19  1  0.275  0.011  0.810  1.0
  F  F20  1  0.989  0.725  0.190  1.0
  F  F21  1  0.891  0.616  0.743  1.0
  F  F22  1  0.384  0.109  0.257  1.0
[/CIF]
.