The material structure described by Pb2Sb2O7 crystallizes in the orthorhombic Ima2 space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the second Pb site, Pb(2) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 40-42°. In the second Sb site, Sb(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Pb(1), one Pb(2), one Sb(1), and one Sb(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Pb(2), two equivalent Pb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Pb(2), one Sb(1), and one Sb(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to two equivalent Sb(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb2Pb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.551
_cell_length_b   7.551
_cell_length_c   7.551
_cell_angle_alpha   120.454
_cell_angle_beta   116.935
_cell_angle_gamma   92.303
_symmetry_Int_Tables_number   1
_cell_volume   309.883
_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
  Sb  Sb0  1  0.498  0.761  0.758  1.0
  Sb  Sb1  1  0.502  0.261  0.263  1.0
  Sb  Sb2  1  0.500  0.259  0.759  1.0
  Sb  Sb3  1  0.000  0.759  0.759  1.0
  Pb  Pb4  1  0.041  0.245  0.787  1.0
  Pb  Pb5  1  0.959  0.745  0.204  1.0
  Pb  Pb6  1  0.500  0.772  0.272  1.0
  Pb  Pb7  1  0.000  0.272  0.272  1.0
  O  O8  1  0.549  0.580  0.886  1.0
  O  O9  1  0.451  0.337  0.030  1.0
  O  O10  1  0.807  0.837  0.886  1.0
  O  O11  1  0.193  0.080  0.030  1.0
  O  O12  1  0.197  0.176  0.552  1.0
  O  O13  1  0.803  0.355  0.980  1.0
  O  O14  1  0.875  0.855  0.552  1.0
  O  O15  1  0.125  0.676  0.980  1.0
  O  O16  1  0.540  0.175  0.483  1.0
  O  O17  1  0.460  0.943  0.636  1.0
  O  O18  1  0.807  0.443  0.483  1.0
  O  O19  1  0.193  0.675  0.636  1.0
  O  O20  1  0.591  0.010  0.101  1.0
  O  O21  1  0.409  0.510  0.419  1.0
[/CIF]
.
The material structure described by Pb2Sb2O7 crystallizes in the orthorhombic Ima2 space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the second Pb site, Pb(2) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 40-42°. In the second Sb site, Sb(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Pb(1), one Pb(2), one Sb(1), and one Sb(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Pb(2), two equivalent Pb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Pb(2), one Sb(1), and one Sb(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to two equivalent Sb(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb2Pb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.551
_cell_length_b   7.551
_cell_length_c   7.551
_cell_angle_alpha   120.454
_cell_angle_beta   116.935
_cell_angle_gamma   92.303
_symmetry_Int_Tables_number   1
_cell_volume   309.883
_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
  Sb  Sb0  1  0.498  0.761  0.758  1.0
  Sb  Sb1  1  0.502  0.261  0.263  1.0
  Sb  Sb2  1  0.500  0.259  0.759  1.0
  Sb  Sb3  1  0.000  0.759  0.759  1.0
  Pb  Pb4  1  0.041  0.245  0.787  1.0
  Pb  Pb5  1  0.959  0.745  0.204  1.0
  Pb  Pb6  1  0.500  0.772  0.272  1.0
  Pb  Pb7  1  0.000  0.272  0.272  1.0
  O  O8  1  0.549  0.580  0.886  1.0
  O  O9  1  0.451  0.337  0.030  1.0
  O  O10  1  0.807  0.837  0.886  1.0
  O  O11  1  0.193  0.080  0.030  1.0
  O  O12  1  0.197  0.176  0.552  1.0
  O  O13  1  0.803  0.355  0.980  1.0
  O  O14  1  0.875  0.855  0.552  1.0
  O  O15  1  0.125  0.676  0.980  1.0
  O  O16  1  0.540  0.175  0.483  1.0
  O  O17  1  0.460  0.943  0.636  1.0
  O  O18  1  0.807  0.443  0.483  1.0
  O  O19  1  0.193  0.675  0.636  1.0
  O  O20  1  0.591  0.010  0.101  1.0
  O  O21  1  0.409  0.510  0.419  1.0
[/CIF]
.