The material structure described by Ba4PrY(CuO2)8 crystallizes in the monoclinic P2/m space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(1,2); two equivalent O(3); two equivalent O(4); two equivalent O(5); and two equivalent O(7) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to two equivalent O(1,2); two equivalent O(3); two equivalent O(4); two equivalent O(6); and two equivalent O(8) atoms. Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1,2) and four equivalent O(8) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(1,2) and four equivalent O(7) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(3), one O(5), and two equivalent O(6) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one O(4), one O(6), and two equivalent O(5) atoms. In the third Cu site, Cu(3) is bonded to one O(3); one O(7); one O(8); and two equivalent O(1,2) atoms to form corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(4); one O(7); one O(8); and two equivalent O(1,2) atoms to form corner-sharing CuO5 square pyramids. There are seven inequivalent O sites. In the first O site, O(1,2) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Pr(1), one Y(1), and two equivalent Cu(3) atoms. In the second O site, O(3) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Cu(1), and one Cu(3) atom to form distorted OBa4Cu2 octahedra that share corners with two equivalent O(8)Ba2Pr2Cu2 octahedra, corners with four equivalent O(4)Ba4Cu2 octahedra, edges with two equivalent O(3)Ba4Cu2 octahedra, edges with two equivalent O(4)Ba4Cu2 octahedra, and  a faceface with one O(8)Ba2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 11-58°. In the third O site, O(4) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Cu(2), and one Cu(4) atom to form distorted OBa4Cu2 octahedra that share corners with two equivalent O(8)Ba2Pr2Cu2 octahedra, corners with four equivalent O(3)Ba4Cu2 octahedra, edges with two equivalent O(3)Ba4Cu2 octahedra, edges with two equivalent O(4)Ba4Cu2 octahedra, and  a faceface with one O(8)Ba2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 11-58°. In the fourth O site, O(5) is bonded in a distorted T-shaped geometry to two equivalent Ba(1), one Cu(1), and two equivalent Cu(2) atoms. In the fifth O site, O(6) is bonded in a distorted T-shaped geometry to two equivalent Ba(2), one Cu(2), and two equivalent Cu(1) atoms. In the sixth O site, O(7) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), one Cu(3), and one Cu(4) atom. In the seventh O site, O(8) is bonded to two equivalent Ba(2), two equivalent Pr(1), one Cu(3), and one Cu(4) atom to form distorted OBa2Pr2Cu2 octahedra that share corners with two equivalent O(8)Ba2Pr2Cu2 octahedra, corners with two equivalent O(3)Ba4Cu2 octahedra, corners with two equivalent O(4)Ba4Cu2 octahedra, edges with three equivalent O(8)Ba2Pr2Cu2 octahedra,  a faceface with one O(3)Ba4Cu2 octahedra, and  a faceface with one O(4)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-58°. is represented by the CIF file [CIF]
data_Ba4PrY(CuO2)8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.907
_cell_length_b   7.834
_cell_length_c   13.991
_cell_angle_alpha   81.994
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   424.007
_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
  Ba  Ba0  1  0.500  0.432  0.271  1.0
  Ba  Ba1  1  0.500  0.932  0.273  1.0
  Ba  Ba2  1  0.500  0.068  0.727  1.0
  Ba  Ba3  1  0.500  0.568  0.729  1.0
  Pr  Pr4  1  0.500  0.000  0.000  1.0
  Y  Y5  1  0.500  0.500  0.000  1.0
  Cu  Cu6  1  0.000  0.144  0.425  1.0
  Cu  Cu7  1  0.000  0.644  0.425  1.0
  Cu  Cu8  1  0.000  0.356  0.575  1.0
  Cu  Cu9  1  0.000  0.856  0.575  1.0
  Cu  Cu10  1  0.000  0.221  0.125  1.0
  Cu  Cu11  1  0.000  0.716  0.125  1.0
  Cu  Cu12  1  0.000  0.284  0.875  1.0
  Cu  Cu13  1  0.000  0.779  0.875  1.0
  O  O14  1  0.500  0.232  0.107  1.0
  O  O15  1  0.500  0.714  0.107  1.0
  O  O16  1  0.500  0.286  0.893  1.0
  O  O17  1  0.500  0.768  0.893  1.0
  O  O18  1  0.000  0.177  0.291  1.0
  O  O19  1  0.000  0.677  0.291  1.0
  O  O20  1  0.000  0.323  0.709  1.0
  O  O21  1  0.000  0.823  0.709  1.0
  O  O22  1  0.000  0.390  0.439  1.0
  O  O23  1  0.000  0.890  0.439  1.0
  O  O24  1  0.000  0.110  0.561  1.0
  O  O25  1  0.000  0.610  0.561  1.0
  O  O26  1  0.000  0.474  0.105  1.0
  O  O27  1  0.000  0.972  0.113  1.0
  O  O28  1  0.000  0.028  0.887  1.0
  O  O29  1  0.000  0.526  0.895  1.0
[/CIF]
.
The material structure described by Ba4PrY(CuO2)8 crystallizes in the monoclinic P2/m space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(1,2); two equivalent O(3); two equivalent O(4); two equivalent O(5); and two equivalent O(7) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to two equivalent O(1,2); two equivalent O(3); two equivalent O(4); two equivalent O(6); and two equivalent O(8) atoms. Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1,2) and four equivalent O(8) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(1,2) and four equivalent O(7) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(3), one O(5), and two equivalent O(6) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one O(4), one O(6), and two equivalent O(5) atoms. In the third Cu site, Cu(3) is bonded to one O(3); one O(7); one O(8); and two equivalent O(1,2) atoms to form corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(4); one O(7); one O(8); and two equivalent O(1,2) atoms to form corner-sharing CuO5 square pyramids. There are seven inequivalent O sites. In the first O site, O(1,2) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Pr(1), one Y(1), and two equivalent Cu(3) atoms. In the second O site, O(3) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Cu(1), and one Cu(3) atom to form distorted OBa4Cu2 octahedra that share corners with two equivalent O(8)Ba2Pr2Cu2 octahedra, corners with four equivalent O(4)Ba4Cu2 octahedra, edges with two equivalent O(3)Ba4Cu2 octahedra, edges with two equivalent O(4)Ba4Cu2 octahedra, and  a faceface with one O(8)Ba2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 11-58°. In the third O site, O(4) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Cu(2), and one Cu(4) atom to form distorted OBa4Cu2 octahedra that share corners with two equivalent O(8)Ba2Pr2Cu2 octahedra, corners with four equivalent O(3)Ba4Cu2 octahedra, edges with two equivalent O(3)Ba4Cu2 octahedra, edges with two equivalent O(4)Ba4Cu2 octahedra, and  a faceface with one O(8)Ba2Pr2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 11-58°. In the fourth O site, O(5) is bonded in a distorted T-shaped geometry to two equivalent Ba(1), one Cu(1), and two equivalent Cu(2) atoms. In the fifth O site, O(6) is bonded in a distorted T-shaped geometry to two equivalent Ba(2), one Cu(2), and two equivalent Cu(1) atoms. In the sixth O site, O(7) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), one Cu(3), and one Cu(4) atom. In the seventh O site, O(8) is bonded to two equivalent Ba(2), two equivalent Pr(1), one Cu(3), and one Cu(4) atom to form distorted OBa2Pr2Cu2 octahedra that share corners with two equivalent O(8)Ba2Pr2Cu2 octahedra, corners with two equivalent O(3)Ba4Cu2 octahedra, corners with two equivalent O(4)Ba4Cu2 octahedra, edges with three equivalent O(8)Ba2Pr2Cu2 octahedra,  a faceface with one O(3)Ba4Cu2 octahedra, and  a faceface with one O(4)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-58°. is represented by the CIF file [CIF]
data_Ba4PrY(CuO2)8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.907
_cell_length_b   7.834
_cell_length_c   13.991
_cell_angle_alpha   81.994
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   424.007
_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
  Ba  Ba0  1  0.500  0.432  0.271  1.0
  Ba  Ba1  1  0.500  0.932  0.273  1.0
  Ba  Ba2  1  0.500  0.068  0.727  1.0
  Ba  Ba3  1  0.500  0.568  0.729  1.0
  Pr  Pr4  1  0.500  0.000  0.000  1.0
  Y  Y5  1  0.500  0.500  0.000  1.0
  Cu  Cu6  1  0.000  0.144  0.425  1.0
  Cu  Cu7  1  0.000  0.644  0.425  1.0
  Cu  Cu8  1  0.000  0.356  0.575  1.0
  Cu  Cu9  1  0.000  0.856  0.575  1.0
  Cu  Cu10  1  0.000  0.221  0.125  1.0
  Cu  Cu11  1  0.000  0.716  0.125  1.0
  Cu  Cu12  1  0.000  0.284  0.875  1.0
  Cu  Cu13  1  0.000  0.779  0.875  1.0
  O  O14  1  0.500  0.232  0.107  1.0
  O  O15  1  0.500  0.714  0.107  1.0
  O  O16  1  0.500  0.286  0.893  1.0
  O  O17  1  0.500  0.768  0.893  1.0
  O  O18  1  0.000  0.177  0.291  1.0
  O  O19  1  0.000  0.677  0.291  1.0
  O  O20  1  0.000  0.323  0.709  1.0
  O  O21  1  0.000  0.823  0.709  1.0
  O  O22  1  0.000  0.390  0.439  1.0
  O  O23  1  0.000  0.890  0.439  1.0
  O  O24  1  0.000  0.110  0.561  1.0
  O  O25  1  0.000  0.610  0.561  1.0
  O  O26  1  0.000  0.474  0.105  1.0
  O  O27  1  0.000  0.972  0.113  1.0
  O  O28  1  0.000  0.028  0.887  1.0
  O  O29  1  0.000  0.526  0.895  1.0
[/CIF]
.