The material described by Sr2FeCu(PbO3)2 crystallizes in the monoclinic P2/m space group. Sr(1) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. Cu(1) is bonded in a linear geometry to two equivalent O(4) atoms. Pb(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one Fe(1), and one Pb(1) atom to form distorted OSr4FePb octahedra that share corners with four equivalent O(2)Sr4Fe2 octahedra, corners with four equivalent O(3)Sr4Fe2 octahedra, corners with five equivalent O(1)Sr4FePb octahedra, edges with four equivalent O(1)Sr4FePb octahedra, faces with two equivalent O(2)Sr4Fe2 octahedra, and faces with two equivalent O(3)Sr4Fe2 octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the second O site, O(2) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(2)Sr4Fe2 octahedra, corners with eight equivalent O(1)Sr4FePb octahedra, edges with two equivalent O(2)Sr4Fe2 octahedra, faces with four equivalent O(3)Sr4Fe2 octahedra, and faces with four equivalent O(1)Sr4FePb octahedra. The corner-sharing octahedral tilt angles range from 0-51°. In the third O site, O(3) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form OSr4Fe2 octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with eight equivalent O(1)Sr4FePb octahedra, edges with two equivalent O(3)Sr4Fe2 octahedra, faces with four equivalent O(2)Sr4Fe2 octahedra, and faces with four equivalent O(1)Sr4FePb octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Sr(1), one Cu(1), and two equivalent Pb(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2FeCu(PbO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.923
_cell_length_b   3.978
_cell_length_c   12.273
_cell_angle_alpha   88.430
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   191.476
_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
  Sr  Sr0  1  0.000  0.017  0.357  1.0
  Sr  Sr1  1  0.000  0.983  0.643  1.0
  Fe  Fe2  1  0.500  0.500  0.500  1.0
  Cu  Cu3  1  0.000  0.000  0.000  1.0
  Pb  Pb4  1  0.500  0.502  0.143  1.0
  Pb  Pb5  1  0.500  0.498  0.857  1.0
  O  O6  1  0.500  0.518  0.321  1.0
  O  O7  1  0.500  0.482  0.679  1.0
  O  O8  1  0.000  0.500  0.500  1.0
  O  O9  1  0.500  0.000  0.500  1.0
  O  O10  1  0.000  0.123  0.144  1.0
  O  O11  1  0.000  0.877  0.856  1.0
[/CIF]
.
The material described by Sr2FeCu(PbO3)2 crystallizes in the monoclinic P2/m space group. Sr(1) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. Cu(1) is bonded in a linear geometry to two equivalent O(4) atoms. Pb(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one Fe(1), and one Pb(1) atom to form distorted OSr4FePb octahedra that share corners with four equivalent O(2)Sr4Fe2 octahedra, corners with four equivalent O(3)Sr4Fe2 octahedra, corners with five equivalent O(1)Sr4FePb octahedra, edges with four equivalent O(1)Sr4FePb octahedra, faces with two equivalent O(2)Sr4Fe2 octahedra, and faces with two equivalent O(3)Sr4Fe2 octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the second O site, O(2) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(2)Sr4Fe2 octahedra, corners with eight equivalent O(1)Sr4FePb octahedra, edges with two equivalent O(2)Sr4Fe2 octahedra, faces with four equivalent O(3)Sr4Fe2 octahedra, and faces with four equivalent O(1)Sr4FePb octahedra. The corner-sharing octahedral tilt angles range from 0-51°. In the third O site, O(3) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form OSr4Fe2 octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with eight equivalent O(1)Sr4FePb octahedra, edges with two equivalent O(3)Sr4Fe2 octahedra, faces with four equivalent O(2)Sr4Fe2 octahedra, and faces with four equivalent O(1)Sr4FePb octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Sr(1), one Cu(1), and two equivalent Pb(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2FeCu(PbO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.923
_cell_length_b   3.978
_cell_length_c   12.273
_cell_angle_alpha   88.430
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   191.476
_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
  Sr  Sr0  1  0.000  0.017  0.357  1.0
  Sr  Sr1  1  0.000  0.983  0.643  1.0
  Fe  Fe2  1  0.500  0.500  0.500  1.0
  Cu  Cu3  1  0.000  0.000  0.000  1.0
  Pb  Pb4  1  0.500  0.502  0.143  1.0
  Pb  Pb5  1  0.500  0.498  0.857  1.0
  O  O6  1  0.500  0.518  0.321  1.0
  O  O7  1  0.500  0.482  0.679  1.0
  O  O8  1  0.000  0.500  0.500  1.0
  O  O9  1  0.500  0.000  0.500  1.0
  O  O10  1  0.000  0.123  0.144  1.0
  O  O11  1  0.000  0.877  0.856  1.0
[/CIF]
.