The crystal structure described by Sr8Nd3Ce5(CuO12)2 crystallizes in the monoclinic Pm space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(2), one O(4), one O(5), one O(7), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to one O(1), one O(11), one O(3), one O(6), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to one O(12), one O(17), one O(18), and one O(4) atom. In the fourth Sr site, Sr(4) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(13), one O(4), and one O(9) atom. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(14), one O(18), one O(19), and one O(3) atom. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one O(13), one O(15), one O(16), one O(2), one O(5), and two equivalent O(18) atoms. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 6-coordinate geometry to one O(14), one O(17), one O(19), one O(6), and two equivalent O(18) atoms. In the second Ce site, Ce(2) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(2), one O(5), and two equivalent O(1) atoms. In the third Ce site, Ce(3) is bonded in a distorted octahedral geometry to one O(11), one O(17), one O(3), one O(8), and two equivalent O(4) atoms. In the fourth Ce site, Ce(4) is bonded in a 4-coordinate geometry to one O(13), one O(15), one O(16), one O(7), and two equivalent O(12) atoms. In the fifth Ce site, Ce(5) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(17), one O(19), one O(8), and two equivalent O(12) atoms. Cu(1) is bonded in a trigonal planar geometry to one O(1), one O(12), and one O(15) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(2), one Nd(1), one Ce(2), and one Cu(1) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), one Nd(2), and one Ce(2) atom to form distorted corner-sharing OSr2CeNd trigonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Sr(2), two equivalent Nd(1), and one Ce(3) atom. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(3), one Sr(4), and one Ce(3) atom to form distorted OSr3Ce trigonal pyramids that share  a cornercorner with one O(11)Sr2Ce2 tetrahedra,  a cornercorner with one O(2)Sr2CeNd trigonal pyramid,  a cornercorner with one O(4)Sr3Ce trigonal pyramid, and  an edgeedge with one O(17)Sr2Ce3 trigonal bipyramid. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Nd(2), and one Ce(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Sr(2) and one Ce(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one Ce(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Ce(3) and one Ce(5) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), and one Sr(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to two equivalent Sr(4) and one Ce(2) atom. In the eleventh O site, O(11) is bonded to two equivalent Sr(2), one Ce(3), and one Ce(5) atom to form distorted OSr2Ce2 tetrahedra that share corners with two equivalent O(17)Sr2Ce3 trigonal bipyramids and corners with two equivalent O(4)Sr3Ce trigonal pyramids. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Sr(3), one Sr(4), one Nd(1), one Ce(4), one Ce(5), and one Cu(1) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to two equivalent Sr(4), one Nd(2), and one Ce(4) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to two equivalent Nd(1), one Ce(1), and one Ce(5) atom. In the fifteenth O site, O(15) is bonded in a 5-coordinate geometry to one Nd(2), one Ce(2), one Ce(4), and two equivalent Cu(1) atoms. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Nd(2) and one Ce(4) atom. In the seventeenth O site, O(17) is bonded to two equivalent Sr(3), one Ce(1), one Ce(3), and one Ce(5) atom to form OSr2Ce3 trigonal bipyramids that share corners with two equivalent O(11)Sr2Ce2 tetrahedra and edges with two equivalent O(4)Sr3Ce trigonal pyramids. In the eighteenth O site, O(18) is bonded in a distorted T-shaped geometry to one Sr(3), one Nd(1), one Nd(2), and one Ce(1) atom. In the nineteenth O site, O(19) is bonded in a rectangular see-saw-like geometry to two equivalent Nd(1), one Ce(1), and one Ce(5) atom. is represented by the CIF file [CIF]
data_Sr8Ce5Nd3(CuO12)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.451
_cell_length_b   7.087
_cell_length_c   11.212
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   118.147
_symmetry_Int_Tables_number   1
_cell_volume   732.174
_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  0.359  0.740  0.155  1.0
  Sr  Sr1  1  0.359  0.740  0.845  1.0
  Sr  Sr2  1  0.321  0.294  0.353  1.0
  Sr  Sr3  1  0.321  0.294  0.647  1.0
  Sr  Sr4  1  0.733  0.025  0.729  1.0
  Sr  Sr5  1  0.618  0.371  0.171  1.0
  Sr  Sr6  1  0.618  0.371  0.829  1.0
  Sr  Sr7  1  0.733  0.025  0.271  1.0
  Ce  Ce8  1  0.967  0.261  0.500  1.0
  Ce  Ce9  1  0.239  0.113  0.000  1.0
  Ce  Ce10  1  0.469  0.970  0.500  1.0
  Ce  Ce11  1  0.717  0.809  0.000  1.0
  Ce  Ce12  1  0.684  0.648  0.500  1.0
  Nd  Nd13  1  0.019  0.735  0.351  1.0
  Nd  Nd14  1  0.019  0.735  0.649  1.0
  Nd  Nd15  1  0.005  0.410  0.000  1.0
  Cu  Cu16  1  0.979  0.930  0.152  1.0
  Cu  Cu17  1  0.979  0.930  0.848  1.0
  O  O18  1  0.170  0.004  0.789  1.0
  O  O19  1  0.173  0.764  0.000  1.0
  O  O20  1  0.216  0.877  0.500  1.0
  O  O21  1  0.508  0.038  0.696  1.0
  O  O22  1  0.225  0.415  0.000  1.0
  O  O23  1  0.183  0.381  0.500  1.0
  O  O24  1  0.521  0.793  0.000  1.0
  O  O25  1  0.486  0.671  0.500  1.0
  O  O26  1  0.170  0.004  0.211  1.0
  O  O27  1  0.493  0.560  0.229  1.0
  O  O28  1  0.493  0.560  0.771  1.0
  O  O29  1  0.456  0.188  0.000  1.0
  O  O30  1  0.514  0.318  0.500  1.0
  O  O31  1  0.820  0.760  0.256  1.0
  O  O32  1  0.820  0.760  0.744  1.0
  O  O33  1  0.508  0.038  0.304  1.0
  O  O34  1  0.779  0.566  0.000  1.0
  O  O35  1  0.842  0.521  0.500  1.0
  O  O36  1  0.979  0.040  0.000  1.0
  O  O37  1  0.770  0.144  0.000  1.0
  O  O38  1  0.726  0.026  0.500  1.0
  O  O39  1  0.960  0.381  0.298  1.0
  O  O40  1  0.960  0.381  0.702  1.0
  O  O41  1  0.953  0.939  0.500  1.0
[/CIF]
.
The crystal structure described by Sr8Nd3Ce5(CuO12)2 crystallizes in the monoclinic Pm space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(2), one O(4), one O(5), one O(7), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to one O(1), one O(11), one O(3), one O(6), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to one O(12), one O(17), one O(18), and one O(4) atom. In the fourth Sr site, Sr(4) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(13), one O(4), and one O(9) atom. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(14), one O(18), one O(19), and one O(3) atom. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one O(13), one O(15), one O(16), one O(2), one O(5), and two equivalent O(18) atoms. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 6-coordinate geometry to one O(14), one O(17), one O(19), one O(6), and two equivalent O(18) atoms. In the second Ce site, Ce(2) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(2), one O(5), and two equivalent O(1) atoms. In the third Ce site, Ce(3) is bonded in a distorted octahedral geometry to one O(11), one O(17), one O(3), one O(8), and two equivalent O(4) atoms. In the fourth Ce site, Ce(4) is bonded in a 4-coordinate geometry to one O(13), one O(15), one O(16), one O(7), and two equivalent O(12) atoms. In the fifth Ce site, Ce(5) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(17), one O(19), one O(8), and two equivalent O(12) atoms. Cu(1) is bonded in a trigonal planar geometry to one O(1), one O(12), and one O(15) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(2), one Nd(1), one Ce(2), and one Cu(1) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), one Nd(2), and one Ce(2) atom to form distorted corner-sharing OSr2CeNd trigonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Sr(2), two equivalent Nd(1), and one Ce(3) atom. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(3), one Sr(4), and one Ce(3) atom to form distorted OSr3Ce trigonal pyramids that share  a cornercorner with one O(11)Sr2Ce2 tetrahedra,  a cornercorner with one O(2)Sr2CeNd trigonal pyramid,  a cornercorner with one O(4)Sr3Ce trigonal pyramid, and  an edgeedge with one O(17)Sr2Ce3 trigonal bipyramid. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Nd(2), and one Ce(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Sr(2) and one Ce(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one Ce(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Ce(3) and one Ce(5) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), and one Sr(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to two equivalent Sr(4) and one Ce(2) atom. In the eleventh O site, O(11) is bonded to two equivalent Sr(2), one Ce(3), and one Ce(5) atom to form distorted OSr2Ce2 tetrahedra that share corners with two equivalent O(17)Sr2Ce3 trigonal bipyramids and corners with two equivalent O(4)Sr3Ce trigonal pyramids. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Sr(3), one Sr(4), one Nd(1), one Ce(4), one Ce(5), and one Cu(1) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to two equivalent Sr(4), one Nd(2), and one Ce(4) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to two equivalent Nd(1), one Ce(1), and one Ce(5) atom. In the fifteenth O site, O(15) is bonded in a 5-coordinate geometry to one Nd(2), one Ce(2), one Ce(4), and two equivalent Cu(1) atoms. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Nd(2) and one Ce(4) atom. In the seventeenth O site, O(17) is bonded to two equivalent Sr(3), one Ce(1), one Ce(3), and one Ce(5) atom to form OSr2Ce3 trigonal bipyramids that share corners with two equivalent O(11)Sr2Ce2 tetrahedra and edges with two equivalent O(4)Sr3Ce trigonal pyramids. In the eighteenth O site, O(18) is bonded in a distorted T-shaped geometry to one Sr(3), one Nd(1), one Nd(2), and one Ce(1) atom. In the nineteenth O site, O(19) is bonded in a rectangular see-saw-like geometry to two equivalent Nd(1), one Ce(1), and one Ce(5) atom. is represented by the CIF file [CIF]
data_Sr8Ce5Nd3(CuO12)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.451
_cell_length_b   7.087
_cell_length_c   11.212
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   118.147
_symmetry_Int_Tables_number   1
_cell_volume   732.174
_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  0.359  0.740  0.155  1.0
  Sr  Sr1  1  0.359  0.740  0.845  1.0
  Sr  Sr2  1  0.321  0.294  0.353  1.0
  Sr  Sr3  1  0.321  0.294  0.647  1.0
  Sr  Sr4  1  0.733  0.025  0.729  1.0
  Sr  Sr5  1  0.618  0.371  0.171  1.0
  Sr  Sr6  1  0.618  0.371  0.829  1.0
  Sr  Sr7  1  0.733  0.025  0.271  1.0
  Ce  Ce8  1  0.967  0.261  0.500  1.0
  Ce  Ce9  1  0.239  0.113  0.000  1.0
  Ce  Ce10  1  0.469  0.970  0.500  1.0
  Ce  Ce11  1  0.717  0.809  0.000  1.0
  Ce  Ce12  1  0.684  0.648  0.500  1.0
  Nd  Nd13  1  0.019  0.735  0.351  1.0
  Nd  Nd14  1  0.019  0.735  0.649  1.0
  Nd  Nd15  1  0.005  0.410  0.000  1.0
  Cu  Cu16  1  0.979  0.930  0.152  1.0
  Cu  Cu17  1  0.979  0.930  0.848  1.0
  O  O18  1  0.170  0.004  0.789  1.0
  O  O19  1  0.173  0.764  0.000  1.0
  O  O20  1  0.216  0.877  0.500  1.0
  O  O21  1  0.508  0.038  0.696  1.0
  O  O22  1  0.225  0.415  0.000  1.0
  O  O23  1  0.183  0.381  0.500  1.0
  O  O24  1  0.521  0.793  0.000  1.0
  O  O25  1  0.486  0.671  0.500  1.0
  O  O26  1  0.170  0.004  0.211  1.0
  O  O27  1  0.493  0.560  0.229  1.0
  O  O28  1  0.493  0.560  0.771  1.0
  O  O29  1  0.456  0.188  0.000  1.0
  O  O30  1  0.514  0.318  0.500  1.0
  O  O31  1  0.820  0.760  0.256  1.0
  O  O32  1  0.820  0.760  0.744  1.0
  O  O33  1  0.508  0.038  0.304  1.0
  O  O34  1  0.779  0.566  0.000  1.0
  O  O35  1  0.842  0.521  0.500  1.0
  O  O36  1  0.979  0.040  0.000  1.0
  O  O37  1  0.770  0.144  0.000  1.0
  O  O38  1  0.726  0.026  0.500  1.0
  O  O39  1  0.960  0.381  0.298  1.0
  O  O40  1  0.960  0.381  0.702  1.0
  O  O41  1  0.953  0.939  0.500  1.0
[/CIF]
.