The crystal structure described by Sr4Pr3CeNb2(CuO5)4 crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(4), two equivalent O(5), four equivalent O(2), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra; corners with four equivalent Sr(3)O12 cuboctahedra;  a faceface with one Sr(4)O12 cuboctahedra; faces with four equivalent Sr(2)O12 cuboctahedra; faces with two equivalent Nb(1)O6 octahedra; faces with two equivalent Nb(2)O6 octahedra; and faces with four equivalent Cu(1,2)O5 square pyramids. In the second Sr site, Sr(2) is bonded to two equivalent O(4), two equivalent O(5), four equivalent O(2), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra; corners with four equivalent Sr(4)O12 cuboctahedra;  a faceface with one Sr(3)O12 cuboctahedra; faces with four equivalent Sr(1)O12 cuboctahedra; faces with two equivalent Nb(1)O6 octahedra; faces with two equivalent Nb(2)O6 octahedra; and faces with four equivalent Cu(1,2)O5 square pyramids. In the third Sr site, Sr(3) is bonded to two equivalent O(6), two equivalent O(7), four equivalent O(3), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Cu(3)O5 square pyramids, and faces with two equivalent Cu(4)O5 square pyramids. In the fourth Sr site, Sr(4) is bonded to two equivalent O(6), two equivalent O(7), four equivalent O(3), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with four equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Cu(3)O5 square pyramids, and faces with two equivalent Cu(4)O5 square pyramids. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. In the third Pr site, Pr(3) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Ce(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(5), one O(6), and four equivalent O(8) atoms to form NbO6 octahedra that share corners with four equivalent Nb(2)O6 octahedra;  a cornercorner with one Cu(1,2)O5 square pyramid;  a cornercorner with one Cu(3)O5 square pyramid; faces with two equivalent Sr(1)O12 cuboctahedra; faces with two equivalent Sr(2)O12 cuboctahedra; faces with two equivalent Sr(3)O12 cuboctahedra; and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Nb site, Nb(2) is bonded to one O(4), one O(7), and four equivalent O(8) atoms to form NbO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra;  a cornercorner with one Cu(1,2)O5 square pyramid;  a cornercorner with one Cu(4)O5 square pyramid; faces with two equivalent Sr(1)O12 cuboctahedra; faces with two equivalent Sr(2)O12 cuboctahedra; faces with two equivalent Sr(3)O12 cuboctahedra; and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are three inequivalent Cu sites. In the first Cu site, Cu(1,2) is bonded to one O(4) and four equivalent O(2) atoms to form CuO5 square pyramids that share  a cornercorner with one Nb(2)O6 octahedra; corners with four equivalent Cu(1,2)O5 square pyramids; faces with two equivalent Sr(1)O12 cuboctahedra; and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Cu site, Cu(3) is bonded to one O(6) and four equivalent O(3) atoms to form CuO5 square pyramids that share  a cornercorner with one Nb(1)O6 octahedra, corners with four equivalent Cu(4)O5 square pyramids, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the third Cu site, Cu(4) is bonded to one O(7) and four equivalent O(3) atoms to form CuO5 square pyramids that share  a cornercorner with one Nb(2)O6 octahedra, corners with four equivalent Cu(3)O5 square pyramids, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Pr(1), one Pr(2), one Pr(3), and one Ce(1) atom to form OCePr3 tetrahedra that share corners with six equivalent O(2)Sr2CePrCu2 octahedra, corners with six equivalent O(3)Sr2Pr2Cu2 octahedra, corners with four equivalent O(1)CePr3 tetrahedra,  an edgeedge with one O(2)Sr2CePrCu2 octahedra,  an edgeedge with one O(3)Sr2Pr2Cu2 octahedra, and edges with four equivalent O(1)CePr3 tetrahedra. The corner-sharing octahedral tilt angles range from 7-70°. In the second O site, O(2) is bonded to one Sr(1); one Sr(2); one Pr(1); one Ce(1); and two equivalent Cu(1,2) atoms to form distorted OSr2CePrCu2 octahedra that share corners with two equivalent O(2)Sr2CePrCu2 octahedra, corners with two equivalent O(4)Sr4NbCu octahedra, corners with two equivalent O(5)Sr4NbCu octahedra, corners with six equivalent O(1)CePr3 tetrahedra, edges with two equivalent O(2)Sr2CePrCu2 octahedra,  an edgeedge with one O(1)CePr3 tetrahedra,  a faceface with one O(4)Sr4NbCu octahedra,  a faceface with one O(5)Sr4NbCu octahedra, and faces with four equivalent O(2)Sr2CePrCu2 octahedra. The corner-sharing octahedral tilt angles range from 9-54°. In the third O site, O(3) is bonded to one Sr(3), one Sr(4), one Pr(2), one Pr(3), one Cu(3), and one Cu(4) atom to form distorted OSr2Pr2Cu2 octahedra that share corners with two equivalent O(3)Sr2Pr2Cu2 octahedra, corners with two equivalent O(6)Sr4NbCu octahedra, corners with two equivalent O(7)Sr4NbCu octahedra, corners with six equivalent O(1)CePr3 tetrahedra, edges with two equivalent O(3)Sr2Pr2Cu2 octahedra,  an edgeedge with one O(1)CePr3 tetrahedra,  a faceface with one O(6)Sr4NbCu octahedra,  a faceface with one O(7)Sr4NbCu octahedra, and faces with four equivalent O(3)Sr2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 8-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1); two equivalent Sr(2); one Nb(2); and one Cu(1,2) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(7)Sr4NbCu octahedra, corners with four equivalent O(4)Sr4NbCu octahedra, corners with eight equivalent O(2)Sr2CePrCu2 octahedra, edges with four equivalent O(5)Sr4NbCu octahedra, and faces with four equivalent O(2)Sr2CePrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the fifth O site, O(5) is bonded to two equivalent Sr(1); two equivalent Sr(2); one Nb(1); and one Cu(1,2) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(6)Sr4NbCu octahedra, corners with four equivalent O(5)Sr4NbCu octahedra, corners with eight equivalent O(2)Sr2CePrCu2 octahedra, edges with four equivalent O(4)Sr4NbCu octahedra, and faces with four equivalent O(2)Sr2CePrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the sixth O site, O(6) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Nb(1), and one Cu(3) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(5)Sr4NbCu octahedra, corners with four equivalent O(6)Sr4NbCu octahedra, corners with eight equivalent O(3)Sr2Pr2Cu2 octahedra, edges with four equivalent O(7)Sr4NbCu octahedra, and faces with four equivalent O(3)Sr2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the seventh O site, O(7) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Nb(2), and one Cu(4) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(4)Sr4NbCu octahedra, corners with four equivalent O(7)Sr4NbCu octahedra, corners with eight equivalent O(3)Sr2Pr2Cu2 octahedra, edges with four equivalent O(6)Sr4NbCu octahedra, and faces with four equivalent O(3)Sr2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the eighth O site, O(8) is bonded in a linear geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Nb(1), and one Nb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4CePr3Nb2(CuO5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.901
_cell_length_b   14.901
_cell_length_c   5.617
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   158.273
_symmetry_Int_Tables_number   1
_cell_volume   461.726
_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  0.081  0.919  0.500  1.0
  Sr  Sr1  1  0.582  0.418  0.000  1.0
  Sr  Sr2  1  0.418  0.582  0.000  1.0
  Sr  Sr3  1  0.918  0.082  0.500  1.0
  Ce  Ce4  1  0.708  0.292  0.000  1.0
  Pr  Pr5  1  0.205  0.795  0.500  1.0
  Pr  Pr6  1  0.794  0.206  0.500  1.0
  Pr  Pr7  1  0.294  0.706  0.000  1.0
  Nb  Nb8  1  0.500  0.500  0.500  1.0
  Nb  Nb9  1  0.000  1.000  0.000  1.0
  Cu  Cu10  1  0.143  0.857  0.000  1.0
  Cu  Cu11  1  0.643  0.357  0.500  1.0
  Cu  Cu12  1  0.358  0.642  0.500  1.0
  Cu  Cu13  1  0.858  0.142  0.000  1.0
  O  O14  1  0.505  0.009  0.757  1.0
  O  O15  1  0.991  0.495  0.243  1.0
  O  O16  1  0.991  0.495  0.757  1.0
  O  O17  1  0.505  0.009  0.243  1.0
  O  O18  1  0.402  0.106  0.754  1.0
  O  O19  1  0.894  0.598  0.246  1.0
  O  O20  1  0.894  0.598  0.754  1.0
  O  O21  1  0.402  0.106  0.246  1.0
  O  O22  1  0.103  0.397  0.750  1.0
  O  O23  1  0.603  0.897  0.250  1.0
  O  O24  1  0.603  0.897  0.750  1.0
  O  O25  1  0.103  0.397  0.250  1.0
  O  O26  1  0.068  0.932  0.000  1.0
  O  O27  1  0.568  0.432  0.500  1.0
  O  O28  1  0.432  0.568  0.500  1.0
  O  O29  1  0.932  0.068  0.000  1.0
  O  O30  1  0.250  0.250  0.750  1.0
  O  O31  1  0.750  0.750  0.250  1.0
  O  O32  1  0.250  0.250  0.250  1.0
  O  O33  1  0.750  0.750  0.750  1.0
[/CIF]
.
The crystal structure described by Sr4Pr3CeNb2(CuO5)4 crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(4), two equivalent O(5), four equivalent O(2), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra; corners with four equivalent Sr(3)O12 cuboctahedra;  a faceface with one Sr(4)O12 cuboctahedra; faces with four equivalent Sr(2)O12 cuboctahedra; faces with two equivalent Nb(1)O6 octahedra; faces with two equivalent Nb(2)O6 octahedra; and faces with four equivalent Cu(1,2)O5 square pyramids. In the second Sr site, Sr(2) is bonded to two equivalent O(4), two equivalent O(5), four equivalent O(2), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra; corners with four equivalent Sr(4)O12 cuboctahedra;  a faceface with one Sr(3)O12 cuboctahedra; faces with four equivalent Sr(1)O12 cuboctahedra; faces with two equivalent Nb(1)O6 octahedra; faces with two equivalent Nb(2)O6 octahedra; and faces with four equivalent Cu(1,2)O5 square pyramids. In the third Sr site, Sr(3) is bonded to two equivalent O(6), two equivalent O(7), four equivalent O(3), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Cu(3)O5 square pyramids, and faces with two equivalent Cu(4)O5 square pyramids. In the fourth Sr site, Sr(4) is bonded to two equivalent O(6), two equivalent O(7), four equivalent O(3), and four equivalent O(8) atoms to form distorted SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with four equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Cu(3)O5 square pyramids, and faces with two equivalent Cu(4)O5 square pyramids. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. In the third Pr site, Pr(3) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Ce(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(5), one O(6), and four equivalent O(8) atoms to form NbO6 octahedra that share corners with four equivalent Nb(2)O6 octahedra;  a cornercorner with one Cu(1,2)O5 square pyramid;  a cornercorner with one Cu(3)O5 square pyramid; faces with two equivalent Sr(1)O12 cuboctahedra; faces with two equivalent Sr(2)O12 cuboctahedra; faces with two equivalent Sr(3)O12 cuboctahedra; and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Nb site, Nb(2) is bonded to one O(4), one O(7), and four equivalent O(8) atoms to form NbO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra;  a cornercorner with one Cu(1,2)O5 square pyramid;  a cornercorner with one Cu(4)O5 square pyramid; faces with two equivalent Sr(1)O12 cuboctahedra; faces with two equivalent Sr(2)O12 cuboctahedra; faces with two equivalent Sr(3)O12 cuboctahedra; and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are three inequivalent Cu sites. In the first Cu site, Cu(1,2) is bonded to one O(4) and four equivalent O(2) atoms to form CuO5 square pyramids that share  a cornercorner with one Nb(2)O6 octahedra; corners with four equivalent Cu(1,2)O5 square pyramids; faces with two equivalent Sr(1)O12 cuboctahedra; and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Cu site, Cu(3) is bonded to one O(6) and four equivalent O(3) atoms to form CuO5 square pyramids that share  a cornercorner with one Nb(1)O6 octahedra, corners with four equivalent Cu(4)O5 square pyramids, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the third Cu site, Cu(4) is bonded to one O(7) and four equivalent O(3) atoms to form CuO5 square pyramids that share  a cornercorner with one Nb(2)O6 octahedra, corners with four equivalent Cu(3)O5 square pyramids, faces with two equivalent Sr(3)O12 cuboctahedra, and faces with two equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Pr(1), one Pr(2), one Pr(3), and one Ce(1) atom to form OCePr3 tetrahedra that share corners with six equivalent O(2)Sr2CePrCu2 octahedra, corners with six equivalent O(3)Sr2Pr2Cu2 octahedra, corners with four equivalent O(1)CePr3 tetrahedra,  an edgeedge with one O(2)Sr2CePrCu2 octahedra,  an edgeedge with one O(3)Sr2Pr2Cu2 octahedra, and edges with four equivalent O(1)CePr3 tetrahedra. The corner-sharing octahedral tilt angles range from 7-70°. In the second O site, O(2) is bonded to one Sr(1); one Sr(2); one Pr(1); one Ce(1); and two equivalent Cu(1,2) atoms to form distorted OSr2CePrCu2 octahedra that share corners with two equivalent O(2)Sr2CePrCu2 octahedra, corners with two equivalent O(4)Sr4NbCu octahedra, corners with two equivalent O(5)Sr4NbCu octahedra, corners with six equivalent O(1)CePr3 tetrahedra, edges with two equivalent O(2)Sr2CePrCu2 octahedra,  an edgeedge with one O(1)CePr3 tetrahedra,  a faceface with one O(4)Sr4NbCu octahedra,  a faceface with one O(5)Sr4NbCu octahedra, and faces with four equivalent O(2)Sr2CePrCu2 octahedra. The corner-sharing octahedral tilt angles range from 9-54°. In the third O site, O(3) is bonded to one Sr(3), one Sr(4), one Pr(2), one Pr(3), one Cu(3), and one Cu(4) atom to form distorted OSr2Pr2Cu2 octahedra that share corners with two equivalent O(3)Sr2Pr2Cu2 octahedra, corners with two equivalent O(6)Sr4NbCu octahedra, corners with two equivalent O(7)Sr4NbCu octahedra, corners with six equivalent O(1)CePr3 tetrahedra, edges with two equivalent O(3)Sr2Pr2Cu2 octahedra,  an edgeedge with one O(1)CePr3 tetrahedra,  a faceface with one O(6)Sr4NbCu octahedra,  a faceface with one O(7)Sr4NbCu octahedra, and faces with four equivalent O(3)Sr2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 8-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1); two equivalent Sr(2); one Nb(2); and one Cu(1,2) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(7)Sr4NbCu octahedra, corners with four equivalent O(4)Sr4NbCu octahedra, corners with eight equivalent O(2)Sr2CePrCu2 octahedra, edges with four equivalent O(5)Sr4NbCu octahedra, and faces with four equivalent O(2)Sr2CePrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the fifth O site, O(5) is bonded to two equivalent Sr(1); two equivalent Sr(2); one Nb(1); and one Cu(1,2) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(6)Sr4NbCu octahedra, corners with four equivalent O(5)Sr4NbCu octahedra, corners with eight equivalent O(2)Sr2CePrCu2 octahedra, edges with four equivalent O(4)Sr4NbCu octahedra, and faces with four equivalent O(2)Sr2CePrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the sixth O site, O(6) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Nb(1), and one Cu(3) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(5)Sr4NbCu octahedra, corners with four equivalent O(6)Sr4NbCu octahedra, corners with eight equivalent O(3)Sr2Pr2Cu2 octahedra, edges with four equivalent O(7)Sr4NbCu octahedra, and faces with four equivalent O(3)Sr2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the seventh O site, O(7) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Nb(2), and one Cu(4) atom to form distorted OSr4NbCu octahedra that share  a cornercorner with one O(4)Sr4NbCu octahedra, corners with four equivalent O(7)Sr4NbCu octahedra, corners with eight equivalent O(3)Sr2Pr2Cu2 octahedra, edges with four equivalent O(6)Sr4NbCu octahedra, and faces with four equivalent O(3)Sr2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the eighth O site, O(8) is bonded in a linear geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Nb(1), and one Nb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4CePr3Nb2(CuO5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.901
_cell_length_b   14.901
_cell_length_c   5.617
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   158.273
_symmetry_Int_Tables_number   1
_cell_volume   461.726
_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  0.081  0.919  0.500  1.0
  Sr  Sr1  1  0.582  0.418  0.000  1.0
  Sr  Sr2  1  0.418  0.582  0.000  1.0
  Sr  Sr3  1  0.918  0.082  0.500  1.0
  Ce  Ce4  1  0.708  0.292  0.000  1.0
  Pr  Pr5  1  0.205  0.795  0.500  1.0
  Pr  Pr6  1  0.794  0.206  0.500  1.0
  Pr  Pr7  1  0.294  0.706  0.000  1.0
  Nb  Nb8  1  0.500  0.500  0.500  1.0
  Nb  Nb9  1  0.000  1.000  0.000  1.0
  Cu  Cu10  1  0.143  0.857  0.000  1.0
  Cu  Cu11  1  0.643  0.357  0.500  1.0
  Cu  Cu12  1  0.358  0.642  0.500  1.0
  Cu  Cu13  1  0.858  0.142  0.000  1.0
  O  O14  1  0.505  0.009  0.757  1.0
  O  O15  1  0.991  0.495  0.243  1.0
  O  O16  1  0.991  0.495  0.757  1.0
  O  O17  1  0.505  0.009  0.243  1.0
  O  O18  1  0.402  0.106  0.754  1.0
  O  O19  1  0.894  0.598  0.246  1.0
  O  O20  1  0.894  0.598  0.754  1.0
  O  O21  1  0.402  0.106  0.246  1.0
  O  O22  1  0.103  0.397  0.750  1.0
  O  O23  1  0.603  0.897  0.250  1.0
  O  O24  1  0.603  0.897  0.750  1.0
  O  O25  1  0.103  0.397  0.250  1.0
  O  O26  1  0.068  0.932  0.000  1.0
  O  O27  1  0.568  0.432  0.500  1.0
  O  O28  1  0.432  0.568  0.500  1.0
  O  O29  1  0.932  0.068  0.000  1.0
  O  O30  1  0.250  0.250  0.750  1.0
  O  O31  1  0.750  0.750  0.250  1.0
  O  O32  1  0.250  0.250  0.250  1.0
  O  O33  1  0.750  0.750  0.750  1.0
[/CIF]
.