The material described by Sr4CeY3Fe2(Cu2O9)2 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(18), two equivalent O(5), two equivalent O(7), and four equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to two equivalent O(17), two equivalent O(6), two equivalent O(8), and four equivalent O(2) atoms. In the third Sr site, Sr(3) is bonded in a distorted q6 geometry to two equivalent O(11), two equivalent O(17), two equivalent O(9), and four equivalent O(3) atoms. In the fourth Sr site, Sr(4) is bonded in a 10-coordinate geometry to two equivalent O(10), two equivalent O(12), two equivalent O(18), and four equivalent O(4) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(14), two equivalent O(16), two equivalent O(6), and two equivalent O(8) atoms. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(11), two equivalent O(13), two equivalent O(15), and two equivalent O(9) atoms. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(12), two equivalent O(14), and two equivalent O(16) atoms. In the third Y site, Y(3) is bonded in a body-centered cubic geometry to two equivalent O(13), two equivalent O(15), two equivalent O(5), and two equivalent O(7) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), two equivalent O(11), and two equivalent O(9) atoms to form corner-sharing FeO5 square pyramids. In the second Fe site, Fe(2) is bonded to one O(4), two equivalent O(10), and two equivalent O(12) atoms to form distorted corner-sharing FeO5 trigonal bipyramids. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(2), one O(3), and two equivalent O(17) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one O(1), one O(4), and two equivalent O(18) atoms. In the third Cu site, Cu(3) is bonded to one O(1), two equivalent O(5), and two equivalent O(7) atoms to form corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(2), two equivalent O(6), and two equivalent O(8) atoms to form corner-sharing CuO5 square pyramids. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one Cu(2), and one Cu(3) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(4)Sr4FeCu octahedra, corners with four equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(7)Sr2Y2Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(18)Sr4Cu2 octahedra, edges with four equivalent O(1)Sr4Cu2 octahedra, faces with two equivalent O(5)Sr2Y2Cu2 octahedra, faces with two equivalent O(7)Sr2Y2Cu2 octahedra, and faces with two equivalent O(18)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-71°. In the second O site, O(2) is bonded to four equivalent Sr(2), one Cu(1), and one Cu(4) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(3)Sr4FeCu octahedra, corners with four equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr4Cu2 octahedra, edges with four equivalent O(2)Sr4Cu2 octahedra, and faces with two equivalent O(17)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the third O site, O(3) is bonded to four equivalent Sr(3), one Fe(1), and one Cu(1) atom to form distorted OSr4FeCu octahedra that share  a cornercorner with one O(2)Sr4Cu2 octahedra, corners with four equivalent O(11)Sr2Y2Fe2 octahedra, corners with four equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4FeCu octahedra, edges with four equivalent O(3)Sr4FeCu octahedra, faces with two equivalent O(11)Sr2Y2Fe2 octahedra, and faces with two equivalent O(17)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-64°. In the fourth O site, O(4) is bonded to four equivalent Sr(4), one Fe(2), and one Cu(2) atom to form distorted OSr4FeCu octahedra that share  a cornercorner with one O(1)Sr4Cu2 octahedra, corners with four equivalent O(18)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4FeCu octahedra, edges with four equivalent O(4)Sr4FeCu octahedra, and faces with two equivalent O(18)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-59°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Y(3), and two equivalent Cu(3) atoms to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(18)Sr4Cu2 octahedra, corners with two equivalent O(13)Y4 tetrahedra, corners with four equivalent O(15)Y4 tetrahedra, edges with two equivalent O(5)Sr2Y2Cu2 octahedra,  an edgeedge with one O(13)Y4 tetrahedra, faces with two equivalent O(1)Sr4Cu2 octahedra, and faces with four equivalent O(7)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 13-57°. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Ce(1), and two equivalent Cu(4) atoms. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Y(3), and two equivalent Cu(3) atoms to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(7)Sr2Y2Cu2 octahedra, corners with two equivalent O(18)Sr4Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(15)Y4 tetrahedra, corners with four equivalent O(13)Y4 tetrahedra,  an edgeedge with one O(18)Sr4Cu2 octahedra, edges with two equivalent O(7)Sr2Y2Cu2 octahedra,  an edgeedge with one O(15)Y4 tetrahedra, faces with two equivalent O(1)Sr4Cu2 octahedra, and faces with four equivalent O(5)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 6-54°. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Ce(1), and two equivalent Cu(4) atoms. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to two equivalent Sr(3), two equivalent Y(1), and two equivalent Fe(1) atoms. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to two equivalent Sr(4), two equivalent Y(2), and two equivalent Fe(2) atoms. In the eleventh O site, O(11) is bonded to two equivalent Sr(3), two equivalent Y(1), and two equivalent Fe(1) atoms to form distorted OSr2Y2Fe2 octahedra that share corners with two equivalent O(11)Sr2Y2Fe2 octahedra, corners with two equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4FeCu octahedra, corners with two equivalent O(13)Y4 tetrahedra, corners with four equivalent O(15)Y4 tetrahedra,  an edgeedge with one O(17)Sr4Cu2 octahedra, edges with two equivalent O(11)Sr2Y2Fe2 octahedra,  an edgeedge with one O(13)Y4 tetrahedra, and faces with two equivalent O(3)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-60°. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to two equivalent Sr(4), two equivalent Y(2), and two equivalent Fe(2) atoms. In the thirteenth O site, O(13) is bonded to two equivalent Y(1) and two equivalent Y(3) atoms to form OY4 tetrahedra that share corners with two equivalent O(5)Sr2Y2Cu2 octahedra, corners with two equivalent O(11)Sr2Y2Fe2 octahedra, corners with four equivalent O(7)Sr2Y2Cu2 octahedra, corners with four equivalent O(13)Y4 tetrahedra,  an edgeedge with one O(5)Sr2Y2Cu2 octahedra,  an edgeedge with one O(11)Sr2Y2Fe2 octahedra, and edges with four equivalent O(15)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-70°. In the fourteenth O site, O(14) is bonded to two equivalent Ce(1) and two equivalent Y(2) atoms to form a mixture of corner and edge-sharing OCe2Y2 tetrahedra. In the fifteenth O site, O(15) is bonded to two equivalent Y(1) and two equivalent Y(3) atoms to form OY4 tetrahedra that share corners with two equivalent O(7)Sr2Y2Cu2 octahedra, corners with four equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(11)Sr2Y2Fe2 octahedra, corners with four equivalent O(15)Y4 tetrahedra,  an edgeedge with one O(7)Sr2Y2Cu2 octahedra, and edges with four equivalent O(13)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 9-71°. In the sixteenth O site, O(16) is bonded to two equivalent Ce(1) and two equivalent Y(2) atoms to form a mixture of corner and edge-sharing OCe2Y2 tetrahedra. In the seventeenth O site, O(17) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Cu(1) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(11)Sr2Y2Fe2 octahedra, corners with two equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4FeCu octahedra,  an edgeedge with one O(11)Sr2Y2Fe2 octahedra, edges with two equivalent O(17)Sr4Cu2 octahedra, faces with two equivalent O(2)Sr4Cu2 octahedra, and faces with two equivalent O(3)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-65°. In the eighteenth O site, O(18) is bonded to two equivalent Sr(1), two equivalent Sr(4), and two equivalent Cu(2) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(7)Sr2Y2Cu2 octahedra, corners with two equivalent O(18)Sr4Cu2 octahedra, corners with four equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4FeCu octahedra,  an edgeedge with one O(7)Sr2Y2Cu2 octahedra, edges with two equivalent O(18)Sr4Cu2 octahedra, faces with two equivalent O(1)Sr4Cu2 octahedra, and faces with two equivalent O(4)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 6-71°. is represented by the CIF file [CIF]
data_Sr4CeY3Fe2(Cu2O9)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.795
_cell_length_b   3.931
_cell_length_c   28.363
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   423.112
_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  0.000  0.579  1.0
  Sr  Sr1  1  0.500  0.500  0.071  1.0
  Sr  Sr2  1  0.500  0.500  0.928  1.0
  Sr  Sr3  1  0.000  0.000  0.433  1.0
  Ce  Ce4  1  0.500  0.500  0.204  1.0
  Y  Y5  1  0.500  0.500  0.790  1.0
  Y  Y6  1  0.000  0.000  0.294  1.0
  Y  Y7  1  0.000  0.000  0.708  1.0
  Fe  Fe8  1  0.000  0.000  0.864  1.0
  Fe  Fe9  1  0.500  0.500  0.364  1.0
  Cu  Cu10  1  0.000  0.000  1.000  1.0
  Cu  Cu11  1  0.500  0.500  0.501  1.0
  Cu  Cu12  1  0.500  0.500  0.640  1.0
  Cu  Cu13  1  0.000  0.000  0.141  1.0
  O  O14  1  0.500  0.500  0.565  1.0
  O  O15  1  0.000  0.000  0.065  1.0
  O  O16  1  0.000  0.000  0.932  1.0
  O  O17  1  0.500  0.500  0.431  1.0
  O  O18  1  0.000  0.500  0.648  1.0
  O  O19  1  0.500  0.000  0.151  1.0
  O  O20  1  0.500  0.000  0.647  1.0
  O  O21  1  0.000  0.500  0.151  1.0
  O  O22  1  0.500  0.000  0.852  1.0
  O  O23  1  0.000  0.500  0.348  1.0
  O  O24  1  0.000  0.500  0.852  1.0
  O  O25  1  0.500  0.000  0.350  1.0
  O  O26  1  0.000  0.500  0.748  1.0
  O  O27  1  0.500  0.000  0.249  1.0
  O  O28  1  0.500  0.000  0.751  1.0
  O  O29  1  0.000  0.500  0.250  1.0
  O  O30  1  0.000  0.500  0.998  1.0
  O  O31  1  0.500  0.000  0.496  1.0
[/CIF]
.
The material described by Sr4CeY3Fe2(Cu2O9)2 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(18), two equivalent O(5), two equivalent O(7), and four equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to two equivalent O(17), two equivalent O(6), two equivalent O(8), and four equivalent O(2) atoms. In the third Sr site, Sr(3) is bonded in a distorted q6 geometry to two equivalent O(11), two equivalent O(17), two equivalent O(9), and four equivalent O(3) atoms. In the fourth Sr site, Sr(4) is bonded in a 10-coordinate geometry to two equivalent O(10), two equivalent O(12), two equivalent O(18), and four equivalent O(4) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(14), two equivalent O(16), two equivalent O(6), and two equivalent O(8) atoms. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(11), two equivalent O(13), two equivalent O(15), and two equivalent O(9) atoms. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(12), two equivalent O(14), and two equivalent O(16) atoms. In the third Y site, Y(3) is bonded in a body-centered cubic geometry to two equivalent O(13), two equivalent O(15), two equivalent O(5), and two equivalent O(7) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), two equivalent O(11), and two equivalent O(9) atoms to form corner-sharing FeO5 square pyramids. In the second Fe site, Fe(2) is bonded to one O(4), two equivalent O(10), and two equivalent O(12) atoms to form distorted corner-sharing FeO5 trigonal bipyramids. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(2), one O(3), and two equivalent O(17) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one O(1), one O(4), and two equivalent O(18) atoms. In the third Cu site, Cu(3) is bonded to one O(1), two equivalent O(5), and two equivalent O(7) atoms to form corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(2), two equivalent O(6), and two equivalent O(8) atoms to form corner-sharing CuO5 square pyramids. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1), one Cu(2), and one Cu(3) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(4)Sr4FeCu octahedra, corners with four equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(7)Sr2Y2Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(18)Sr4Cu2 octahedra, edges with four equivalent O(1)Sr4Cu2 octahedra, faces with two equivalent O(5)Sr2Y2Cu2 octahedra, faces with two equivalent O(7)Sr2Y2Cu2 octahedra, and faces with two equivalent O(18)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-71°. In the second O site, O(2) is bonded to four equivalent Sr(2), one Cu(1), and one Cu(4) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(3)Sr4FeCu octahedra, corners with four equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr4Cu2 octahedra, edges with four equivalent O(2)Sr4Cu2 octahedra, and faces with two equivalent O(17)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the third O site, O(3) is bonded to four equivalent Sr(3), one Fe(1), and one Cu(1) atom to form distorted OSr4FeCu octahedra that share  a cornercorner with one O(2)Sr4Cu2 octahedra, corners with four equivalent O(11)Sr2Y2Fe2 octahedra, corners with four equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4FeCu octahedra, edges with four equivalent O(3)Sr4FeCu octahedra, faces with two equivalent O(11)Sr2Y2Fe2 octahedra, and faces with two equivalent O(17)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-64°. In the fourth O site, O(4) is bonded to four equivalent Sr(4), one Fe(2), and one Cu(2) atom to form distorted OSr4FeCu octahedra that share  a cornercorner with one O(1)Sr4Cu2 octahedra, corners with four equivalent O(18)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4FeCu octahedra, edges with four equivalent O(4)Sr4FeCu octahedra, and faces with two equivalent O(18)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-59°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Y(3), and two equivalent Cu(3) atoms to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(18)Sr4Cu2 octahedra, corners with two equivalent O(13)Y4 tetrahedra, corners with four equivalent O(15)Y4 tetrahedra, edges with two equivalent O(5)Sr2Y2Cu2 octahedra,  an edgeedge with one O(13)Y4 tetrahedra, faces with two equivalent O(1)Sr4Cu2 octahedra, and faces with four equivalent O(7)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 13-57°. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Ce(1), and two equivalent Cu(4) atoms. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Y(3), and two equivalent Cu(3) atoms to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(7)Sr2Y2Cu2 octahedra, corners with two equivalent O(18)Sr4Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(15)Y4 tetrahedra, corners with four equivalent O(13)Y4 tetrahedra,  an edgeedge with one O(18)Sr4Cu2 octahedra, edges with two equivalent O(7)Sr2Y2Cu2 octahedra,  an edgeedge with one O(15)Y4 tetrahedra, faces with two equivalent O(1)Sr4Cu2 octahedra, and faces with four equivalent O(5)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 6-54°. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Ce(1), and two equivalent Cu(4) atoms. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to two equivalent Sr(3), two equivalent Y(1), and two equivalent Fe(1) atoms. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to two equivalent Sr(4), two equivalent Y(2), and two equivalent Fe(2) atoms. In the eleventh O site, O(11) is bonded to two equivalent Sr(3), two equivalent Y(1), and two equivalent Fe(1) atoms to form distorted OSr2Y2Fe2 octahedra that share corners with two equivalent O(11)Sr2Y2Fe2 octahedra, corners with two equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4FeCu octahedra, corners with two equivalent O(13)Y4 tetrahedra, corners with four equivalent O(15)Y4 tetrahedra,  an edgeedge with one O(17)Sr4Cu2 octahedra, edges with two equivalent O(11)Sr2Y2Fe2 octahedra,  an edgeedge with one O(13)Y4 tetrahedra, and faces with two equivalent O(3)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-60°. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to two equivalent Sr(4), two equivalent Y(2), and two equivalent Fe(2) atoms. In the thirteenth O site, O(13) is bonded to two equivalent Y(1) and two equivalent Y(3) atoms to form OY4 tetrahedra that share corners with two equivalent O(5)Sr2Y2Cu2 octahedra, corners with two equivalent O(11)Sr2Y2Fe2 octahedra, corners with four equivalent O(7)Sr2Y2Cu2 octahedra, corners with four equivalent O(13)Y4 tetrahedra,  an edgeedge with one O(5)Sr2Y2Cu2 octahedra,  an edgeedge with one O(11)Sr2Y2Fe2 octahedra, and edges with four equivalent O(15)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-70°. In the fourteenth O site, O(14) is bonded to two equivalent Ce(1) and two equivalent Y(2) atoms to form a mixture of corner and edge-sharing OCe2Y2 tetrahedra. In the fifteenth O site, O(15) is bonded to two equivalent Y(1) and two equivalent Y(3) atoms to form OY4 tetrahedra that share corners with two equivalent O(7)Sr2Y2Cu2 octahedra, corners with four equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(11)Sr2Y2Fe2 octahedra, corners with four equivalent O(15)Y4 tetrahedra,  an edgeedge with one O(7)Sr2Y2Cu2 octahedra, and edges with four equivalent O(13)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 9-71°. In the sixteenth O site, O(16) is bonded to two equivalent Ce(1) and two equivalent Y(2) atoms to form a mixture of corner and edge-sharing OCe2Y2 tetrahedra. In the seventeenth O site, O(17) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Cu(1) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(11)Sr2Y2Fe2 octahedra, corners with two equivalent O(17)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4FeCu octahedra,  an edgeedge with one O(11)Sr2Y2Fe2 octahedra, edges with two equivalent O(17)Sr4Cu2 octahedra, faces with two equivalent O(2)Sr4Cu2 octahedra, and faces with two equivalent O(3)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-65°. In the eighteenth O site, O(18) is bonded to two equivalent Sr(1), two equivalent Sr(4), and two equivalent Cu(2) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(7)Sr2Y2Cu2 octahedra, corners with two equivalent O(18)Sr4Cu2 octahedra, corners with four equivalent O(5)Sr2Y2Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4FeCu octahedra,  an edgeedge with one O(7)Sr2Y2Cu2 octahedra, edges with two equivalent O(18)Sr4Cu2 octahedra, faces with two equivalent O(1)Sr4Cu2 octahedra, and faces with two equivalent O(4)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 6-71°. is represented by the CIF file [CIF]
data_Sr4CeY3Fe2(Cu2O9)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.795
_cell_length_b   3.931
_cell_length_c   28.363
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   423.112
_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  0.000  0.579  1.0
  Sr  Sr1  1  0.500  0.500  0.071  1.0
  Sr  Sr2  1  0.500  0.500  0.928  1.0
  Sr  Sr3  1  0.000  0.000  0.433  1.0
  Ce  Ce4  1  0.500  0.500  0.204  1.0
  Y  Y5  1  0.500  0.500  0.790  1.0
  Y  Y6  1  0.000  0.000  0.294  1.0
  Y  Y7  1  0.000  0.000  0.708  1.0
  Fe  Fe8  1  0.000  0.000  0.864  1.0
  Fe  Fe9  1  0.500  0.500  0.364  1.0
  Cu  Cu10  1  0.000  0.000  1.000  1.0
  Cu  Cu11  1  0.500  0.500  0.501  1.0
  Cu  Cu12  1  0.500  0.500  0.640  1.0
  Cu  Cu13  1  0.000  0.000  0.141  1.0
  O  O14  1  0.500  0.500  0.565  1.0
  O  O15  1  0.000  0.000  0.065  1.0
  O  O16  1  0.000  0.000  0.932  1.0
  O  O17  1  0.500  0.500  0.431  1.0
  O  O18  1  0.000  0.500  0.648  1.0
  O  O19  1  0.500  0.000  0.151  1.0
  O  O20  1  0.500  0.000  0.647  1.0
  O  O21  1  0.000  0.500  0.151  1.0
  O  O22  1  0.500  0.000  0.852  1.0
  O  O23  1  0.000  0.500  0.348  1.0
  O  O24  1  0.000  0.500  0.852  1.0
  O  O25  1  0.500  0.000  0.350  1.0
  O  O26  1  0.000  0.500  0.748  1.0
  O  O27  1  0.500  0.000  0.249  1.0
  O  O28  1  0.500  0.000  0.751  1.0
  O  O29  1  0.000  0.500  0.250  1.0
  O  O30  1  0.000  0.500  0.998  1.0
  O  O31  1  0.500  0.000  0.496  1.0
[/CIF]
.