The material structure described by Sr4Y2(Fe2O5)3 crystallizes in the orthorhombic Fmmm space group. Sr(1) is bonded in a 10-coordinate geometry to one O(3), one O(5), two equivalent O(1), two equivalent O(6), and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(5), two equivalent O(4), and two equivalent O(6) atoms to form corner-sharing FeO5 square pyramids. In the second Fe site, Fe(2) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form distorted corner-sharing FeO5 trigonal bipyramids. There are six inequivalent O sites. In the first O site, O(4) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Fe(1), and one Fe(2) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Fe(2) atoms. In the third O site, O(2) is bonded to two equivalent Y(1) and two equivalent Fe(2) atoms to form distorted corner-sharing OY2Fe2 tetrahedra. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Fe(2) atoms. In the fifth O site, O(5) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form face-sharing OSr4Fe2 octahedra. In the sixth O site, O(6) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form a mixture of edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedral tilt angles are 1°. is represented by the CIF file [CIF]
data_Sr4Y2(Fe2O5)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.338
_cell_length_b   12.310
_cell_length_c   5.521
_cell_angle_alpha   77.338
_cell_angle_beta   76.774
_cell_angle_gamma   25.888
_symmetry_Int_Tables_number   1
_cell_volume   356.224
_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  0.684  0.155  0.845  1.0
  Sr  Sr1  1  0.155  0.684  0.316  1.0
  Sr  Sr2  1  0.316  0.845  0.155  1.0
  Sr  Sr3  1  0.845  0.316  0.684  1.0
  Y  Y4  1  0.500  0.000  0.000  1.0
  Y  Y5  1  0.000  0.500  0.500  1.0
  Fe  Fe6  1  0.253  0.747  0.747  1.0
  Fe  Fe7  1  0.747  0.253  0.253  1.0
  Fe  Fe8  1  0.575  0.086  0.425  1.0
  Fe  Fe9  1  0.086  0.575  0.914  1.0
  Fe  Fe10  1  0.425  0.914  0.575  1.0
  Fe  Fe11  1  0.914  0.425  0.086  1.0
  O  O12  1  0.812  0.812  0.688  1.0
  O  O13  1  0.312  0.312  0.188  1.0
  O  O14  1  0.303  0.303  0.697  1.0
  O  O15  1  0.817  0.817  0.183  1.0
  O  O16  1  0.688  0.688  0.812  1.0
  O  O17  1  0.188  0.188  0.312  1.0
  O  O18  1  0.183  0.183  0.817  1.0
  O  O19  1  0.697  0.697  0.303  1.0
  O  O20  1  0.635  0.190  0.365  1.0
  O  O21  1  0.190  0.635  0.810  1.0
  O  O22  1  0.365  0.810  0.635  1.0
  O  O23  1  0.810  0.365  0.190  1.0
  O  O24  1  0.000  0.000  0.000  1.0
  O  O25  1  0.000  0.000  0.500  1.0
  O  O26  1  0.500  0.500  0.000  1.0
[/CIF]
.
The material structure described by Sr4Y2(Fe2O5)3 crystallizes in the orthorhombic Fmmm space group. Sr(1) is bonded in a 10-coordinate geometry to one O(3), one O(5), two equivalent O(1), two equivalent O(6), and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(5), two equivalent O(4), and two equivalent O(6) atoms to form corner-sharing FeO5 square pyramids. In the second Fe site, Fe(2) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form distorted corner-sharing FeO5 trigonal bipyramids. There are six inequivalent O sites. In the first O site, O(4) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Fe(1), and one Fe(2) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Fe(2) atoms. In the third O site, O(2) is bonded to two equivalent Y(1) and two equivalent Fe(2) atoms to form distorted corner-sharing OY2Fe2 tetrahedra. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Fe(2) atoms. In the fifth O site, O(5) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form face-sharing OSr4Fe2 octahedra. In the sixth O site, O(6) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form a mixture of edge, face, and corner-sharing OSr4Fe2 octahedra. The corner-sharing octahedral tilt angles are 1°. is represented by the CIF file [CIF]
data_Sr4Y2(Fe2O5)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.338
_cell_length_b   12.310
_cell_length_c   5.521
_cell_angle_alpha   77.338
_cell_angle_beta   76.774
_cell_angle_gamma   25.888
_symmetry_Int_Tables_number   1
_cell_volume   356.224
_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  0.684  0.155  0.845  1.0
  Sr  Sr1  1  0.155  0.684  0.316  1.0
  Sr  Sr2  1  0.316  0.845  0.155  1.0
  Sr  Sr3  1  0.845  0.316  0.684  1.0
  Y  Y4  1  0.500  0.000  0.000  1.0
  Y  Y5  1  0.000  0.500  0.500  1.0
  Fe  Fe6  1  0.253  0.747  0.747  1.0
  Fe  Fe7  1  0.747  0.253  0.253  1.0
  Fe  Fe8  1  0.575  0.086  0.425  1.0
  Fe  Fe9  1  0.086  0.575  0.914  1.0
  Fe  Fe10  1  0.425  0.914  0.575  1.0
  Fe  Fe11  1  0.914  0.425  0.086  1.0
  O  O12  1  0.812  0.812  0.688  1.0
  O  O13  1  0.312  0.312  0.188  1.0
  O  O14  1  0.303  0.303  0.697  1.0
  O  O15  1  0.817  0.817  0.183  1.0
  O  O16  1  0.688  0.688  0.812  1.0
  O  O17  1  0.188  0.188  0.312  1.0
  O  O18  1  0.183  0.183  0.817  1.0
  O  O19  1  0.697  0.697  0.303  1.0
  O  O20  1  0.635  0.190  0.365  1.0
  O  O21  1  0.190  0.635  0.810  1.0
  O  O22  1  0.365  0.810  0.635  1.0
  O  O23  1  0.810  0.365  0.190  1.0
  O  O24  1  0.000  0.000  0.000  1.0
  O  O25  1  0.000  0.000  0.500  1.0
  O  O26  1  0.500  0.500  0.000  1.0
[/CIF]
.