The material described by Sr2Y4Fe2Cu2O13 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(7) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted YO7 pentagonal bipyramids that share  a cornercorner with one Y(1)O7 pentagonal bipyramid,  an edgeedge with one Y(1)O7 pentagonal bipyramid, edges with two equivalent Fe(1)O5 trigonal bipyramids, and edges with two equivalent Cu(1)O5 trigonal bipyramids. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. Fe(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(7) atom to form FeO5 trigonal bipyramids that share corners with five equivalent Cu(1)O5 trigonal bipyramids and edges with two equivalent Y(1)O7 pentagonal bipyramids. Cu(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(7) atom to form CuO5 trigonal bipyramids that share corners with five equivalent Fe(1)O5 trigonal bipyramids and edges with two equivalent Y(1)O7 pentagonal bipyramids. There are seven inequivalent O sites. In the first O site, O(6) is bonded to one Y(1), one Y(2), one Fe(1), and one Cu(1) atom to form distorted OY2FeCu tetrahedra that share corners with two equivalent O(2)Sr2Y2FeCu octahedra, corners with two equivalent O(7)Sr4FeCu octahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with four equivalent O(4)Y4 tetrahedra,  an edgeedge with one O(2)Sr2Y2FeCu octahedra, and edges with two equivalent O(3)Sr2Y2FeCu octahedra. The corner-sharing octahedral tilt angles range from 29-67°. In the second O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), one Y(1), one Y(2), one Fe(1), and one Cu(1) atom. In the third O site, O(2) is bonded to two equivalent Sr(1), one Y(1), one Y(2), one Fe(1), and one Cu(1) atom to form distorted OSr2Y2FeCu octahedra that share corners with two equivalent O(2)Sr2Y2FeCu octahedra, corners with three equivalent O(3)Sr2Y2FeCu octahedra, corners with four equivalent O(7)Sr4FeCu octahedra, corners with two equivalent O(6)Y2FeCu tetrahedra, corners with two equivalent O(4)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra,  an edgeedge with one O(3)Sr2Y2FeCu octahedra,  an edgeedge with one O(6)Y2FeCu tetrahedra,  an edgeedge with one O(4)Y4 tetrahedra,  a faceface with one O(3)Sr2Y2FeCu octahedra, and faces with two equivalent O(7)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 7-70°. In the fourth O site, O(3) is bonded to two equivalent Sr(1), one Y(1), one Y(2), one Fe(1), and one Cu(1) atom to form distorted OSr2Y2FeCu octahedra that share corners with three equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(7)Sr4FeCu octahedra, corners with four equivalent O(4)Y4 tetrahedra,  an edgeedge with one O(2)Sr2Y2FeCu octahedra,  an edgeedge with one O(3)Sr2Y2FeCu octahedra,  an edgeedge with one O(5)Y4 tetrahedra, edges with two equivalent O(6)Y2FeCu tetrahedra,  a faceface with one O(2)Sr2Y2FeCu octahedra, and faces with two equivalent O(7)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 7-71°. In the fifth O site, O(4) is bonded to two equivalent Y(1) and two equivalent Y(2) atoms to form OY4 tetrahedra that share corners with two equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(3)Sr2Y2FeCu octahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with four equivalent O(6)Y2FeCu tetrahedra,  an edgeedge with one O(2)Sr2Y2FeCu octahedra,  an edgeedge with one O(5)Y4 tetrahedra, and edges with two equivalent O(4)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-69°. In the sixth O site, O(5) is bonded to two equivalent Y(1) and two equivalent Y(2) atoms to form OY4 tetrahedra that share corners with four equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(6)Y2FeCu tetrahedra, corners with four equivalent O(4)Y4 tetrahedra, edges with two equivalent O(3)Sr2Y2FeCu octahedra, and edges with two equivalent O(4)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 12-63°. In the seventh O site, O(7) is bonded to four equivalent Sr(1), one Fe(1), and one Cu(1) atom to form distorted OSr4FeCu octahedra that share corners with four equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(3)Sr2Y2FeCu octahedra, corners with four equivalent O(7)Sr4FeCu octahedra, corners with two equivalent O(6)Y2FeCu tetrahedra, edges with four equivalent O(7)Sr4FeCu octahedra, faces with two equivalent O(2)Sr2Y2FeCu octahedra, and faces with two equivalent O(3)Sr2Y2FeCu octahedra. The corner-sharing octahedral tilt angles range from 11-71°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2Y4Fe2Cu2O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.873
_cell_length_b   11.873
_cell_length_c   10.799
_cell_angle_alpha   63.497
_cell_angle_beta   63.497
_cell_angle_gamma   26.569
_symmetry_Int_Tables_number   1
_cell_volume   605.168
_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
  Sr  Sr0  1  0.707  0.793  0.134  1.0
  Sr  Sr1  1  0.293  0.207  0.866  1.0
  Sr  Sr2  1  0.793  0.707  0.634  1.0
  Sr  Sr3  1  0.207  0.293  0.366  1.0
  Y  Y4  1  0.890  0.978  0.954  1.0
  Y  Y5  1  0.475  0.394  0.676  1.0
  Y  Y6  1  0.606  0.525  0.824  1.0
  Y  Y7  1  0.022  0.110  0.546  1.0
  Y  Y8  1  0.110  0.022  0.046  1.0
  Y  Y9  1  0.525  0.606  0.324  1.0
  Y  Y10  1  0.394  0.475  0.176  1.0
  Y  Y11  1  0.978  0.890  0.454  1.0
  Fe  Fe12  1  0.879  0.810  0.790  1.0
  Fe  Fe13  1  0.190  0.121  0.710  1.0
  Fe  Fe14  1  0.121  0.190  0.210  1.0
  Fe  Fe15  1  0.810  0.879  0.290  1.0
  Cu  Cu16  1  0.319  0.386  0.014  1.0
  Cu  Cu17  1  0.614  0.681  0.486  1.0
  Cu  Cu18  1  0.681  0.614  0.986  1.0
  Cu  Cu19  1  0.386  0.319  0.514  1.0
  O  O20  1  0.063  0.656  0.140  1.0
  O  O21  1  0.149  0.566  0.647  1.0
  O  O22  1  0.434  0.851  0.853  1.0
  O  O23  1  0.344  0.937  0.360  1.0
  O  O24  1  0.937  0.344  0.860  1.0
  O  O25  1  0.851  0.434  0.353  1.0
  O  O26  1  0.566  0.149  0.147  1.0
  O  O27  1  0.656  0.063  0.640  1.0
  O  O28  1  0.607  0.104  0.894  1.0
  O  O29  1  0.896  0.393  0.606  1.0
  O  O30  1  0.393  0.896  0.106  1.0
  O  O31  1  0.104  0.607  0.394  1.0
  O  O32  1  0.250  0.750  0.972  1.0
  O  O33  1  0.250  0.750  0.528  1.0
  O  O34  1  0.750  0.250  0.028  1.0
  O  O35  1  0.750  0.250  0.472  1.0
  O  O36  1  0.750  0.250  0.750  1.0
  O  O37  1  0.250  0.750  0.250  1.0
  O  O38  1  0.861  0.348  0.149  1.0
  O  O39  1  0.652  0.139  0.351  1.0
  O  O40  1  0.139  0.652  0.851  1.0
  O  O41  1  0.348  0.861  0.649  1.0
  O  O42  1  0.698  0.810  0.387  1.0
  O  O43  1  0.302  0.190  0.613  1.0
  O  O44  1  0.810  0.698  0.887  1.0
  O  O45  1  0.190  0.302  0.113  1.0
[/CIF]
.
The material described by Sr2Y4Fe2Cu2O13 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(7) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted YO7 pentagonal bipyramids that share  a cornercorner with one Y(1)O7 pentagonal bipyramid,  an edgeedge with one Y(1)O7 pentagonal bipyramid, edges with two equivalent Fe(1)O5 trigonal bipyramids, and edges with two equivalent Cu(1)O5 trigonal bipyramids. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. Fe(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(7) atom to form FeO5 trigonal bipyramids that share corners with five equivalent Cu(1)O5 trigonal bipyramids and edges with two equivalent Y(1)O7 pentagonal bipyramids. Cu(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(7) atom to form CuO5 trigonal bipyramids that share corners with five equivalent Fe(1)O5 trigonal bipyramids and edges with two equivalent Y(1)O7 pentagonal bipyramids. There are seven inequivalent O sites. In the first O site, O(6) is bonded to one Y(1), one Y(2), one Fe(1), and one Cu(1) atom to form distorted OY2FeCu tetrahedra that share corners with two equivalent O(2)Sr2Y2FeCu octahedra, corners with two equivalent O(7)Sr4FeCu octahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with four equivalent O(4)Y4 tetrahedra,  an edgeedge with one O(2)Sr2Y2FeCu octahedra, and edges with two equivalent O(3)Sr2Y2FeCu octahedra. The corner-sharing octahedral tilt angles range from 29-67°. In the second O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), one Y(1), one Y(2), one Fe(1), and one Cu(1) atom. In the third O site, O(2) is bonded to two equivalent Sr(1), one Y(1), one Y(2), one Fe(1), and one Cu(1) atom to form distorted OSr2Y2FeCu octahedra that share corners with two equivalent O(2)Sr2Y2FeCu octahedra, corners with three equivalent O(3)Sr2Y2FeCu octahedra, corners with four equivalent O(7)Sr4FeCu octahedra, corners with two equivalent O(6)Y2FeCu tetrahedra, corners with two equivalent O(4)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra,  an edgeedge with one O(3)Sr2Y2FeCu octahedra,  an edgeedge with one O(6)Y2FeCu tetrahedra,  an edgeedge with one O(4)Y4 tetrahedra,  a faceface with one O(3)Sr2Y2FeCu octahedra, and faces with two equivalent O(7)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 7-70°. In the fourth O site, O(3) is bonded to two equivalent Sr(1), one Y(1), one Y(2), one Fe(1), and one Cu(1) atom to form distorted OSr2Y2FeCu octahedra that share corners with three equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(7)Sr4FeCu octahedra, corners with four equivalent O(4)Y4 tetrahedra,  an edgeedge with one O(2)Sr2Y2FeCu octahedra,  an edgeedge with one O(3)Sr2Y2FeCu octahedra,  an edgeedge with one O(5)Y4 tetrahedra, edges with two equivalent O(6)Y2FeCu tetrahedra,  a faceface with one O(2)Sr2Y2FeCu octahedra, and faces with two equivalent O(7)Sr4FeCu octahedra. The corner-sharing octahedral tilt angles range from 7-71°. In the fifth O site, O(4) is bonded to two equivalent Y(1) and two equivalent Y(2) atoms to form OY4 tetrahedra that share corners with two equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(3)Sr2Y2FeCu octahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with four equivalent O(6)Y2FeCu tetrahedra,  an edgeedge with one O(2)Sr2Y2FeCu octahedra,  an edgeedge with one O(5)Y4 tetrahedra, and edges with two equivalent O(4)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-69°. In the sixth O site, O(5) is bonded to two equivalent Y(1) and two equivalent Y(2) atoms to form OY4 tetrahedra that share corners with four equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(6)Y2FeCu tetrahedra, corners with four equivalent O(4)Y4 tetrahedra, edges with two equivalent O(3)Sr2Y2FeCu octahedra, and edges with two equivalent O(4)Y4 tetrahedra. The corner-sharing octahedral tilt angles range from 12-63°. In the seventh O site, O(7) is bonded to four equivalent Sr(1), one Fe(1), and one Cu(1) atom to form distorted OSr4FeCu octahedra that share corners with four equivalent O(2)Sr2Y2FeCu octahedra, corners with four equivalent O(3)Sr2Y2FeCu octahedra, corners with four equivalent O(7)Sr4FeCu octahedra, corners with two equivalent O(6)Y2FeCu tetrahedra, edges with four equivalent O(7)Sr4FeCu octahedra, faces with two equivalent O(2)Sr2Y2FeCu octahedra, and faces with two equivalent O(3)Sr2Y2FeCu octahedra. The corner-sharing octahedral tilt angles range from 11-71°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2Y4Fe2Cu2O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.873
_cell_length_b   11.873
_cell_length_c   10.799
_cell_angle_alpha   63.497
_cell_angle_beta   63.497
_cell_angle_gamma   26.569
_symmetry_Int_Tables_number   1
_cell_volume   605.168
_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
  Sr  Sr0  1  0.707  0.793  0.134  1.0
  Sr  Sr1  1  0.293  0.207  0.866  1.0
  Sr  Sr2  1  0.793  0.707  0.634  1.0
  Sr  Sr3  1  0.207  0.293  0.366  1.0
  Y  Y4  1  0.890  0.978  0.954  1.0
  Y  Y5  1  0.475  0.394  0.676  1.0
  Y  Y6  1  0.606  0.525  0.824  1.0
  Y  Y7  1  0.022  0.110  0.546  1.0
  Y  Y8  1  0.110  0.022  0.046  1.0
  Y  Y9  1  0.525  0.606  0.324  1.0
  Y  Y10  1  0.394  0.475  0.176  1.0
  Y  Y11  1  0.978  0.890  0.454  1.0
  Fe  Fe12  1  0.879  0.810  0.790  1.0
  Fe  Fe13  1  0.190  0.121  0.710  1.0
  Fe  Fe14  1  0.121  0.190  0.210  1.0
  Fe  Fe15  1  0.810  0.879  0.290  1.0
  Cu  Cu16  1  0.319  0.386  0.014  1.0
  Cu  Cu17  1  0.614  0.681  0.486  1.0
  Cu  Cu18  1  0.681  0.614  0.986  1.0
  Cu  Cu19  1  0.386  0.319  0.514  1.0
  O  O20  1  0.063  0.656  0.140  1.0
  O  O21  1  0.149  0.566  0.647  1.0
  O  O22  1  0.434  0.851  0.853  1.0
  O  O23  1  0.344  0.937  0.360  1.0
  O  O24  1  0.937  0.344  0.860  1.0
  O  O25  1  0.851  0.434  0.353  1.0
  O  O26  1  0.566  0.149  0.147  1.0
  O  O27  1  0.656  0.063  0.640  1.0
  O  O28  1  0.607  0.104  0.894  1.0
  O  O29  1  0.896  0.393  0.606  1.0
  O  O30  1  0.393  0.896  0.106  1.0
  O  O31  1  0.104  0.607  0.394  1.0
  O  O32  1  0.250  0.750  0.972  1.0
  O  O33  1  0.250  0.750  0.528  1.0
  O  O34  1  0.750  0.250  0.028  1.0
  O  O35  1  0.750  0.250  0.472  1.0
  O  O36  1  0.750  0.250  0.750  1.0
  O  O37  1  0.250  0.750  0.250  1.0
  O  O38  1  0.861  0.348  0.149  1.0
  O  O39  1  0.652  0.139  0.351  1.0
  O  O40  1  0.139  0.652  0.851  1.0
  O  O41  1  0.348  0.861  0.649  1.0
  O  O42  1  0.698  0.810  0.387  1.0
  O  O43  1  0.302  0.190  0.613  1.0
  O  O44  1  0.810  0.698  0.887  1.0
  O  O45  1  0.190  0.302  0.113  1.0
[/CIF]
.