The structure described by Fe3Pb4O8Br crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted FeO5 trigonal bipyramids that share  a cornercorner with one Fe(2)O6 octahedra and corners with four equivalent Fe(1)O5 trigonal bipyramids. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form FeO6 octahedra that share corners with four equivalent Fe(2)O6 octahedra and corners with two equivalent Fe(1)O5 trigonal bipyramids. The corner-sharing octahedra are not tilted. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to four equivalent O(1) and four equivalent Br(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Fe(1) and two equivalent Pb(2) atoms to form a mixture of distorted corner and edge-sharing OFe2Pb2 tetrahedra. In the second O site, O(2) is bonded in a linear geometry to one Fe(1), one Fe(2), and four equivalent Pb(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Fe(2) and four equivalent Pb(1) atoms. Br(1) is bonded in a body-centered cubic geometry to eight equivalent Pb(2) atoms. is represented by the CIF card [CIF]
data_Fe3Pb4BrO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.985
_cell_length_b   3.985
_cell_length_c   15.683
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   249.065
_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
  Fe  Fe0  1  0.000  0.000  0.256  1.0
  Fe  Fe1  1  0.000  0.000  0.744  1.0
  Fe  Fe2  1  0.000  0.000  0.000  1.0
  Pb  Pb3  1  0.500  0.500  0.116  1.0
  Pb  Pb4  1  0.500  0.500  0.884  1.0
  Pb  Pb5  1  0.500  0.500  0.378  1.0
  Pb  Pb6  1  0.500  0.500  0.622  1.0
  Br  Br7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.000  0.500  0.289  1.0
  O  O9  1  0.000  0.500  0.711  1.0
  O  O10  1  0.500  0.000  0.289  1.0
  O  O11  1  0.500  0.000  0.711  1.0
  O  O12  1  0.000  0.000  0.135  1.0
  O  O13  1  0.000  0.000  0.865  1.0
  O  O14  1  0.000  0.500  0.000  1.0
  O  O15  1  0.500  0.000  0.000  1.0
[/CIF]
.
The structure described by Fe3Pb4O8Br crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted FeO5 trigonal bipyramids that share  a cornercorner with one Fe(2)O6 octahedra and corners with four equivalent Fe(1)O5 trigonal bipyramids. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form FeO6 octahedra that share corners with four equivalent Fe(2)O6 octahedra and corners with two equivalent Fe(1)O5 trigonal bipyramids. The corner-sharing octahedra are not tilted. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to four equivalent O(1) and four equivalent Br(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Fe(1) and two equivalent Pb(2) atoms to form a mixture of distorted corner and edge-sharing OFe2Pb2 tetrahedra. In the second O site, O(2) is bonded in a linear geometry to one Fe(1), one Fe(2), and four equivalent Pb(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Fe(2) and four equivalent Pb(1) atoms. Br(1) is bonded in a body-centered cubic geometry to eight equivalent Pb(2) atoms. is represented by the CIF card [CIF]
data_Fe3Pb4BrO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.985
_cell_length_b   3.985
_cell_length_c   15.683
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   249.065
_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
  Fe  Fe0  1  0.000  0.000  0.256  1.0
  Fe  Fe1  1  0.000  0.000  0.744  1.0
  Fe  Fe2  1  0.000  0.000  0.000  1.0
  Pb  Pb3  1  0.500  0.500  0.116  1.0
  Pb  Pb4  1  0.500  0.500  0.884  1.0
  Pb  Pb5  1  0.500  0.500  0.378  1.0
  Pb  Pb6  1  0.500  0.500  0.622  1.0
  Br  Br7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.000  0.500  0.289  1.0
  O  O9  1  0.000  0.500  0.711  1.0
  O  O10  1  0.500  0.000  0.289  1.0
  O  O11  1  0.500  0.000  0.711  1.0
  O  O12  1  0.000  0.000  0.135  1.0
  O  O13  1  0.000  0.000  0.865  1.0
  O  O14  1  0.000  0.500  0.000  1.0
  O  O15  1  0.500  0.000  0.000  1.0
[/CIF]
.