The structure described by Sr8Y4Cu11CO28 crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(12), one O(14), one O(5), one O(9), two equivalent O(10), two equivalent O(3), and two equivalent O(7) atoms. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to one O(13), one O(14), one O(6), one O(9), two equivalent O(10), two equivalent O(4), and two equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(11), one O(12), one O(5), two equivalent O(1), two equivalent O(16), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(11), one O(13), one O(6), two equivalent O(15), two equivalent O(2), and two equivalent O(8) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a body-centered cubic geometry to one O(11), one O(12), one O(13), one O(9), two equivalent O(2), and two equivalent O(3) atoms. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(11), one O(12), one O(13), one O(9), two equivalent O(1), and two equivalent O(4) atoms. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(3), one O(4), and two equivalent O(9) atoms to form corner-sharing CuO5 square pyramids. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(11) atoms. In the third Cu site, Cu(3) is bonded in a rectangular see-saw-like geometry to two equivalent O(10) and two equivalent O(14) atoms. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(3), one O(7), and two equivalent O(12) atoms to form corner-sharing CuO5 square pyramids. In the fifth Cu site, Cu(5) is bonded to one O(2), one O(4), one O(8), and two equivalent O(13) atoms to form corner-sharing CuO5 square pyramids. In the sixth Cu site, Cu(6) is bonded in a rectangular see-saw-like geometry to two equivalent O(5) and two equivalent O(7) atoms. In the seventh Cu site, Cu(7) is bonded in a rectangular see-saw-like geometry to two equivalent O(6) and two equivalent O(8) atoms. C(1) is bonded in a trigonal planar geometry to one O(16) and two equivalent O(15) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(3), two equivalent Y(2), one Cu(2), and one Cu(4) atom to form distorted OSr2Y2Cu2 octahedra that share  a cornercorner with one O(2)Sr2Y2Cu2 octahedra, corners with two equivalent O(5)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr4Cu2 octahedra, edges with two equivalent O(1)Sr2Y2Cu2 octahedra, and  a faceface with one O(7)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 9-51°. In the second O site, O(2) is bonded to two equivalent Sr(4), two equivalent Y(1), one Cu(2), and one Cu(5) atom to form distorted OSr2Y2Cu2 octahedra that share  a cornercorner with one O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, edges with two equivalent O(2)Sr2Y2Cu2 octahedra, and  a faceface with one O(8)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 9-50°. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), one Cu(1), and one Cu(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(2), two equivalent Y(2), one Cu(1), and one Cu(5) atom. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(3), and two equivalent Cu(6) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(5)Sr4Cu2 octahedra, corners with four equivalent O(1)Sr2Y2Cu2 octahedra, corners with four equivalent O(10)Sr4Cu2 octahedra,  an edgeedge with one O(14)Sr4Cu2 octahedra, and faces with four equivalent O(7)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 7-66°. In the sixth O site, O(6) is bonded to two equivalent Sr(2), two equivalent Sr(4), and two equivalent Cu(7) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr2Y2Cu2 octahedra, corners with four equivalent O(10)Sr4Cu2 octahedra,  an edgeedge with one O(14)Sr4Cu2 octahedra, and faces with four equivalent O(8)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 10-65°. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Cu(4), and one Cu(6) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(7)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(14)Sr4Cu2 octahedra,  an edgeedge with one O(10)Sr4Cu2 octahedra, edges with two equivalent O(7)Sr4Cu2 octahedra,  a faceface with one O(1)Sr2Y2Cu2 octahedra, and faces with two equivalent O(5)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 2-67°. In the eighth O site, O(8) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Cu(5), and one Cu(7) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(8)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Y2Cu2 octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(14)Sr4Cu2 octahedra,  an edgeedge with one O(10)Sr4Cu2 octahedra, edges with two equivalent O(8)Sr4Cu2 octahedra,  a faceface with one O(2)Sr2Y2Cu2 octahedra, and faces with two equivalent O(6)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 3-67°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Y(1), one Y(2), and two equivalent Cu(1) atoms. In the tenth O site, O(10) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Cu(3) atom to form a mixture of face, corner, and edge-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-66°. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Sr(3), one Sr(4), one Y(1), one Y(2), and two equivalent Cu(2) atoms. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), and two equivalent Cu(4) atoms. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), and two equivalent Cu(5) atoms. In the fourteenth O site, O(14) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(3) atoms to form a mixture of distorted face, corner, and edge-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to two equivalent Sr(4) and one C(1) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to four equivalent Sr(3) and one C(1) atom. is represented by the CIF file [CIF]
data_Sr8Y4Cu11CO28
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.707
_cell_length_b   13.707
_cell_length_c   3.876
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   112.263
_symmetry_Int_Tables_number   1
_cell_volume   673.872
_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  0.791  0.974  0.500  1.0
  Sr  Sr1  1  0.210  0.027  0.500  1.0
  Sr  Sr2  1  0.027  0.210  0.500  1.0
  Sr  Sr3  1  0.974  0.791  0.500  1.0
  Sr  Sr4  1  0.560  0.738  0.500  1.0
  Sr  Sr5  1  0.444  0.260  0.500  1.0
  Sr  Sr6  1  0.260  0.444  0.500  1.0
  Sr  Sr7  1  0.738  0.560  0.500  1.0
  Y  Y8  1  0.622  0.129  0.500  1.0
  Y  Y9  1  0.379  0.870  0.500  1.0
  Y  Y10  1  0.870  0.379  0.500  1.0
  Y  Y11  1  0.129  0.622  0.500  1.0
  Cu  Cu12  1  0.820  0.180  0.000  1.0
  Cu  Cu13  1  0.180  0.820  0.000  1.0
  Cu  Cu14  1  0.328  0.671  0.000  1.0
  Cu  Cu15  1  0.671  0.328  0.000  1.0
  Cu  Cu16  1  1.000  1.000  0.000  1.0
  Cu  Cu17  1  0.577  0.930  0.000  1.0
  Cu  Cu18  1  0.424  0.069  0.000  1.0
  Cu  Cu19  1  0.069  0.424  0.000  1.0
  Cu  Cu20  1  0.930  0.577  0.000  1.0
  Cu  Cu21  1  0.763  0.763  0.000  1.0
  Cu  Cu22  1  0.240  0.240  0.000  1.0
  C  C23  1  0.498  0.498  0.000  1.0
  O  O24  1  0.449  0.802  0.000  1.0
  O  O25  1  0.553  0.194  0.000  1.0
  O  O26  1  0.194  0.553  0.000  1.0
  O  O27  1  0.802  0.449  0.000  1.0
  O  O28  1  0.682  0.071  0.000  1.0
  O  O29  1  0.319  0.928  0.000  1.0
  O  O30  1  0.928  0.319  0.000  1.0
  O  O31  1  0.071  0.682  0.000  1.0
  O  O32  1  0.756  0.756  0.500  1.0
  O  O33  1  0.251  0.251  0.500  1.0
  O  O34  1  0.679  0.844  0.000  1.0
  O  O35  1  0.320  0.155  0.000  1.0
  O  O36  1  0.155  0.320  0.000  1.0
  O  O37  1  0.844  0.679  0.000  1.0
  O  O38  1  0.809  0.191  0.500  1.0
  O  O39  1  0.191  0.809  0.500  1.0
  O  O40  1  0.917  0.083  0.000  1.0
  O  O41  1  0.083  0.917  0.000  1.0
  O  O42  1  0.322  0.677  0.500  1.0
  O  O43  1  0.677  0.322  0.500  1.0
  O  O44  1  0.566  0.938  0.500  1.0
  O  O45  1  0.434  0.061  0.500  1.0
  O  O46  1  0.061  0.434  0.500  1.0
  O  O47  1  0.938  0.566  0.500  1.0
  O  O48  1  0.001  0.001  0.500  1.0
  O  O49  1  0.407  0.506  0.000  1.0
  O  O50  1  0.506  0.407  0.000  1.0
  O  O51  1  0.584  0.584  0.000  1.0
[/CIF]
.
The structure described by Sr8Y4Cu11CO28 crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(12), one O(14), one O(5), one O(9), two equivalent O(10), two equivalent O(3), and two equivalent O(7) atoms. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to one O(13), one O(14), one O(6), one O(9), two equivalent O(10), two equivalent O(4), and two equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(11), one O(12), one O(5), two equivalent O(1), two equivalent O(16), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(11), one O(13), one O(6), two equivalent O(15), two equivalent O(2), and two equivalent O(8) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a body-centered cubic geometry to one O(11), one O(12), one O(13), one O(9), two equivalent O(2), and two equivalent O(3) atoms. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(11), one O(12), one O(13), one O(9), two equivalent O(1), and two equivalent O(4) atoms. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(3), one O(4), and two equivalent O(9) atoms to form corner-sharing CuO5 square pyramids. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(11) atoms. In the third Cu site, Cu(3) is bonded in a rectangular see-saw-like geometry to two equivalent O(10) and two equivalent O(14) atoms. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(3), one O(7), and two equivalent O(12) atoms to form corner-sharing CuO5 square pyramids. In the fifth Cu site, Cu(5) is bonded to one O(2), one O(4), one O(8), and two equivalent O(13) atoms to form corner-sharing CuO5 square pyramids. In the sixth Cu site, Cu(6) is bonded in a rectangular see-saw-like geometry to two equivalent O(5) and two equivalent O(7) atoms. In the seventh Cu site, Cu(7) is bonded in a rectangular see-saw-like geometry to two equivalent O(6) and two equivalent O(8) atoms. C(1) is bonded in a trigonal planar geometry to one O(16) and two equivalent O(15) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(3), two equivalent Y(2), one Cu(2), and one Cu(4) atom to form distorted OSr2Y2Cu2 octahedra that share  a cornercorner with one O(2)Sr2Y2Cu2 octahedra, corners with two equivalent O(5)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr4Cu2 octahedra, edges with two equivalent O(1)Sr2Y2Cu2 octahedra, and  a faceface with one O(7)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 9-51°. In the second O site, O(2) is bonded to two equivalent Sr(4), two equivalent Y(1), one Cu(2), and one Cu(5) atom to form distorted OSr2Y2Cu2 octahedra that share  a cornercorner with one O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, edges with two equivalent O(2)Sr2Y2Cu2 octahedra, and  a faceface with one O(8)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 9-50°. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), one Cu(1), and one Cu(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(2), two equivalent Y(2), one Cu(1), and one Cu(5) atom. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(3), and two equivalent Cu(6) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(5)Sr4Cu2 octahedra, corners with four equivalent O(1)Sr2Y2Cu2 octahedra, corners with four equivalent O(10)Sr4Cu2 octahedra,  an edgeedge with one O(14)Sr4Cu2 octahedra, and faces with four equivalent O(7)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 7-66°. In the sixth O site, O(6) is bonded to two equivalent Sr(2), two equivalent Sr(4), and two equivalent Cu(7) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr2Y2Cu2 octahedra, corners with four equivalent O(10)Sr4Cu2 octahedra,  an edgeedge with one O(14)Sr4Cu2 octahedra, and faces with four equivalent O(8)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 10-65°. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Cu(4), and one Cu(6) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(7)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(14)Sr4Cu2 octahedra,  an edgeedge with one O(10)Sr4Cu2 octahedra, edges with two equivalent O(7)Sr4Cu2 octahedra,  a faceface with one O(1)Sr2Y2Cu2 octahedra, and faces with two equivalent O(5)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 2-67°. In the eighth O site, O(8) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Cu(5), and one Cu(7) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(8)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Y2Cu2 octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(14)Sr4Cu2 octahedra,  an edgeedge with one O(10)Sr4Cu2 octahedra, edges with two equivalent O(8)Sr4Cu2 octahedra,  a faceface with one O(2)Sr2Y2Cu2 octahedra, and faces with two equivalent O(6)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 3-67°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Y(1), one Y(2), and two equivalent Cu(1) atoms. In the tenth O site, O(10) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Cu(3) atom to form a mixture of face, corner, and edge-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-66°. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Sr(3), one Sr(4), one Y(1), one Y(2), and two equivalent Cu(2) atoms. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), and two equivalent Cu(4) atoms. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), and two equivalent Cu(5) atoms. In the fourteenth O site, O(14) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(3) atoms to form a mixture of distorted face, corner, and edge-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to two equivalent Sr(4) and one C(1) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to four equivalent Sr(3) and one C(1) atom. is represented by the CIF file [CIF]
data_Sr8Y4Cu11CO28
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.707
_cell_length_b   13.707
_cell_length_c   3.876
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   112.263
_symmetry_Int_Tables_number   1
_cell_volume   673.872
_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  0.791  0.974  0.500  1.0
  Sr  Sr1  1  0.210  0.027  0.500  1.0
  Sr  Sr2  1  0.027  0.210  0.500  1.0
  Sr  Sr3  1  0.974  0.791  0.500  1.0
  Sr  Sr4  1  0.560  0.738  0.500  1.0
  Sr  Sr5  1  0.444  0.260  0.500  1.0
  Sr  Sr6  1  0.260  0.444  0.500  1.0
  Sr  Sr7  1  0.738  0.560  0.500  1.0
  Y  Y8  1  0.622  0.129  0.500  1.0
  Y  Y9  1  0.379  0.870  0.500  1.0
  Y  Y10  1  0.870  0.379  0.500  1.0
  Y  Y11  1  0.129  0.622  0.500  1.0
  Cu  Cu12  1  0.820  0.180  0.000  1.0
  Cu  Cu13  1  0.180  0.820  0.000  1.0
  Cu  Cu14  1  0.328  0.671  0.000  1.0
  Cu  Cu15  1  0.671  0.328  0.000  1.0
  Cu  Cu16  1  1.000  1.000  0.000  1.0
  Cu  Cu17  1  0.577  0.930  0.000  1.0
  Cu  Cu18  1  0.424  0.069  0.000  1.0
  Cu  Cu19  1  0.069  0.424  0.000  1.0
  Cu  Cu20  1  0.930  0.577  0.000  1.0
  Cu  Cu21  1  0.763  0.763  0.000  1.0
  Cu  Cu22  1  0.240  0.240  0.000  1.0
  C  C23  1  0.498  0.498  0.000  1.0
  O  O24  1  0.449  0.802  0.000  1.0
  O  O25  1  0.553  0.194  0.000  1.0
  O  O26  1  0.194  0.553  0.000  1.0
  O  O27  1  0.802  0.449  0.000  1.0
  O  O28  1  0.682  0.071  0.000  1.0
  O  O29  1  0.319  0.928  0.000  1.0
  O  O30  1  0.928  0.319  0.000  1.0
  O  O31  1  0.071  0.682  0.000  1.0
  O  O32  1  0.756  0.756  0.500  1.0
  O  O33  1  0.251  0.251  0.500  1.0
  O  O34  1  0.679  0.844  0.000  1.0
  O  O35  1  0.320  0.155  0.000  1.0
  O  O36  1  0.155  0.320  0.000  1.0
  O  O37  1  0.844  0.679  0.000  1.0
  O  O38  1  0.809  0.191  0.500  1.0
  O  O39  1  0.191  0.809  0.500  1.0
  O  O40  1  0.917  0.083  0.000  1.0
  O  O41  1  0.083  0.917  0.000  1.0
  O  O42  1  0.322  0.677  0.500  1.0
  O  O43  1  0.677  0.322  0.500  1.0
  O  O44  1  0.566  0.938  0.500  1.0
  O  O45  1  0.434  0.061  0.500  1.0
  O  O46  1  0.061  0.434  0.500  1.0
  O  O47  1  0.938  0.566  0.500  1.0
  O  O48  1  0.001  0.001  0.500  1.0
  O  O49  1  0.407  0.506  0.000  1.0
  O  O50  1  0.506  0.407  0.000  1.0
  O  O51  1  0.584  0.584  0.000  1.0
[/CIF]
.