The structure described by Fe2PbSb3O8 crystallizes in the orthorhombic Ama2 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form edge-sharing FeO6 octahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(3), two equivalent O(5), and two equivalent O(7) atoms to form edge-sharing FeO6 octahedra. Pb(1) is bonded in a 3-coordinate geometry to one O(7) and two equivalent O(2) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a distorted T-shaped geometry to one O(6) and two equivalent O(1) atoms. In the second Sb site, Sb(2) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(2) atoms. In the third Sb site, Sb(3) is bonded in a distorted T-shaped geometry to one O(4) and two equivalent O(3) atoms. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(3) atom. In the second O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Fe(2) and one Sb(2) atom. In the third O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(1) atom. In the fourth O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(2) and one Pb(1) atom. In the fifth O site, O(1) is bonded in a trigonal planar geometry to one Fe(2) and two equivalent Sb(1) atoms. In the sixth O site, O(2) is bonded in a trigonal planar geometry to one Fe(1), one Pb(1), and one Sb(2) atom. In the seventh O site, O(3) is bonded in a trigonal planar geometry to one Fe(2) and two equivalent Sb(3) atoms. is represented by the CIF card [CIF]
data_Fe2Sb3PbO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.170
_cell_length_b   8.663
_cell_length_c   8.663
_cell_angle_alpha   90.016
_cell_angle_beta   89.997
_cell_angle_gamma   89.997
_symmetry_Int_Tables_number   1
_cell_volume   463.061
_cell_formula_units_Z   2
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  0.750  0.999  0.499  1.0
  Fe  Fe1  1  0.250  0.497  0.997  1.0
  Fe  Fe2  1  0.750  0.497  0.997  1.0
  Fe  Fe3  1  0.250  0.999  0.499  1.0
  Sb  Sb4  1  0.000  0.327  0.670  1.0
  Sb  Sb5  1  0.500  0.170  0.827  1.0
  Sb  Sb6  1  0.500  0.674  0.667  1.0
  Sb  Sb7  1  1.000  0.671  0.328  1.0
  Sb  Sb8  1  0.500  0.828  0.171  1.0
  Sb  Sb9  1  1.000  0.167  0.174  1.0
  Pb  Pb10  1  0.500  0.351  0.349  1.0
  Pb  Pb11  1  1.000  0.849  0.851  1.0
  O  O12  1  0.750  0.326  0.826  1.0
  O  O13  1  0.262  0.825  0.672  1.0
  O  O14  1  0.762  0.172  0.325  1.0
  O  O15  1  0.250  0.326  0.826  1.0
  O  O16  1  0.738  0.825  0.672  1.0
  O  O17  1  0.238  0.172  0.325  1.0
  O  O18  1  0.250  0.669  0.170  1.0
  O  O19  1  0.750  0.670  0.169  1.0
  O  O20  1  0.500  0.853  0.394  1.0
  O  O21  1  1.000  0.399  0.128  1.0
  O  O22  1  0.500  0.628  0.899  1.0
  O  O23  1  1.000  0.894  0.353  1.0
  O  O24  1  0.500  0.147  0.603  1.0
  O  O25  1  0.000  0.582  0.879  1.0
  O  O26  1  0.500  0.379  0.082  1.0
  O  O27  1  0.000  0.103  0.647  1.0
[/CIF]
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The structure described by Fe2PbSb3O8 crystallizes in the orthorhombic Ama2 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form edge-sharing FeO6 octahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(3), two equivalent O(5), and two equivalent O(7) atoms to form edge-sharing FeO6 octahedra. Pb(1) is bonded in a 3-coordinate geometry to one O(7) and two equivalent O(2) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a distorted T-shaped geometry to one O(6) and two equivalent O(1) atoms. In the second Sb site, Sb(2) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(2) atoms. In the third Sb site, Sb(3) is bonded in a distorted T-shaped geometry to one O(4) and two equivalent O(3) atoms. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(3) atom. In the second O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Fe(2) and one Sb(2) atom. In the third O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(1) atom. In the fourth O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(2) and one Pb(1) atom. In the fifth O site, O(1) is bonded in a trigonal planar geometry to one Fe(2) and two equivalent Sb(1) atoms. In the sixth O site, O(2) is bonded in a trigonal planar geometry to one Fe(1), one Pb(1), and one Sb(2) atom. In the seventh O site, O(3) is bonded in a trigonal planar geometry to one Fe(2) and two equivalent Sb(3) atoms. is represented by the CIF card [CIF]
data_Fe2Sb3PbO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.170
_cell_length_b   8.663
_cell_length_c   8.663
_cell_angle_alpha   90.016
_cell_angle_beta   89.997
_cell_angle_gamma   89.997
_symmetry_Int_Tables_number   1
_cell_volume   463.061
_cell_formula_units_Z   2
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  0.750  0.999  0.499  1.0
  Fe  Fe1  1  0.250  0.497  0.997  1.0
  Fe  Fe2  1  0.750  0.497  0.997  1.0
  Fe  Fe3  1  0.250  0.999  0.499  1.0
  Sb  Sb4  1  0.000  0.327  0.670  1.0
  Sb  Sb5  1  0.500  0.170  0.827  1.0
  Sb  Sb6  1  0.500  0.674  0.667  1.0
  Sb  Sb7  1  1.000  0.671  0.328  1.0
  Sb  Sb8  1  0.500  0.828  0.171  1.0
  Sb  Sb9  1  1.000  0.167  0.174  1.0
  Pb  Pb10  1  0.500  0.351  0.349  1.0
  Pb  Pb11  1  1.000  0.849  0.851  1.0
  O  O12  1  0.750  0.326  0.826  1.0
  O  O13  1  0.262  0.825  0.672  1.0
  O  O14  1  0.762  0.172  0.325  1.0
  O  O15  1  0.250  0.326  0.826  1.0
  O  O16  1  0.738  0.825  0.672  1.0
  O  O17  1  0.238  0.172  0.325  1.0
  O  O18  1  0.250  0.669  0.170  1.0
  O  O19  1  0.750  0.670  0.169  1.0
  O  O20  1  0.500  0.853  0.394  1.0
  O  O21  1  1.000  0.399  0.128  1.0
  O  O22  1  0.500  0.628  0.899  1.0
  O  O23  1  1.000  0.894  0.353  1.0
  O  O24  1  0.500  0.147  0.603  1.0
  O  O25  1  0.000  0.582  0.879  1.0
  O  O26  1  0.500  0.379  0.082  1.0
  O  O27  1  0.000  0.103  0.647  1.0
[/CIF]
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