The structure described by Sr2Pr(FeO3)3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(5), two equivalent O(3), three equivalent O(4), and six equivalent O(1) atoms to form distorted SrO12 cuboctahedra that share corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Pr(1)O12 cuboctahedra, corners with six equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra,  a faceface with one Fe(4)O6 octahedra, faces with three equivalent Fe(3)O6 octahedra, and faces with four equivalent Fe(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(5), two equivalent O(3), three equivalent O(6), and six equivalent O(2) atoms to form distorted SrO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Pr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with four equivalent Fe(4)O6 octahedra. Pr(1) is bonded to one O(4), one O(6), two equivalent O(1), two equivalent O(2), two equivalent O(5), and four equivalent O(3) atoms to form distorted PrO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with six equivalent Pr(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(3)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Fe(4)O6 octahedra. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(3)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 12-14°. In the second Fe site, Fe(2) is bonded to two equivalent O(6) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Fe(4)O6 octahedra, faces with two equivalent Pr(1)O12 cuboctahedra, and faces with six equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 8-19°. In the third Fe site, Fe(3) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra, faces with two equivalent Pr(1)O12 cuboctahedra, and faces with six equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 12-14°. In the fourth Fe site, Fe(4) is bonded to one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 8-19°. There are six inequivalent O sites. In the first O site, O(4) is bonded in a 2-coordinate geometry to three equivalent Sr(1), one Pr(1), one Fe(1), and one Fe(3) atom. In the second O site, O(5) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), two equivalent Pr(1), one Fe(1), and one Fe(4) atom. In the third O site, O(6) is bonded in a 2-coordinate geometry to three equivalent Sr(2), one Pr(1), one Fe(2), and one Fe(4) atom. In the fourth O site, O(1) is bonded in a 6-coordinate geometry to three equivalent Sr(1), one Pr(1), one Fe(1), and one Fe(3) atom. In the fifth O site, O(2) is bonded to three equivalent Sr(2), one Pr(1), one Fe(2), and one Fe(4) atom to form a mixture of distorted corner, face, and edge-sharing OSr3PrFe2 octahedra. The corner-sharing octahedral tilt angles range from 0-63°. In the sixth O site, O(3) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), two equivalent Pr(1), one Fe(1), and one Fe(4) atom. is represented by the CIF file [CIF]
data_Sr2Pr(FeO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.537
_cell_length_b   5.537
_cell_length_c   13.570
_cell_angle_alpha   89.457
_cell_angle_beta   89.457
_cell_angle_gamma   59.929
_symmetry_Int_Tables_number   1
_cell_volume   360.025
_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  0.832  0.832  0.084  1.0
  Sr  Sr1  1  0.165  0.165  0.417  1.0
  Sr  Sr2  1  0.168  0.168  0.916  1.0
  Sr  Sr3  1  0.835  0.835  0.583  1.0
  Pr  Pr4  1  0.508  0.508  0.750  1.0
  Pr  Pr5  1  0.492  0.492  0.250  1.0
  Fe  Fe6  1  0.167  0.167  0.166  1.0
  Fe  Fe7  1  0.500  0.500  0.500  1.0
  Fe  Fe8  1  0.833  0.833  0.834  1.0
  Fe  Fe9  1  0.500  0.500  0.000  1.0
  Fe  Fe10  1  0.833  0.833  0.334  1.0
  Fe  Fe11  1  0.167  0.167  0.666  1.0
  O  O12  1  0.324  0.810  0.096  1.0
  O  O13  1  0.651  0.157  0.421  1.0
  O  O14  1  0.975  0.485  0.757  1.0
  O  O15  1  0.190  0.676  0.904  1.0
  O  O16  1  0.515  0.025  0.243  1.0
  O  O17  1  0.843  0.349  0.579  1.0
  O  O18  1  0.810  0.324  0.096  1.0
  O  O19  1  0.157  0.651  0.421  1.0
  O  O20  1  0.485  0.975  0.757  1.0
  O  O21  1  0.676  0.190  0.904  1.0
  O  O22  1  0.025  0.515  0.243  1.0
  O  O23  1  0.349  0.843  0.579  1.0
  O  O24  1  0.679  0.679  0.929  1.0
  O  O25  1  0.014  0.014  0.263  1.0
  O  O26  1  0.352  0.352  0.603  1.0
  O  O27  1  0.321  0.321  0.071  1.0
  O  O28  1  0.648  0.648  0.397  1.0
  O  O29  1  0.986  0.986  0.737  1.0
[/CIF]
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The structure described by Sr2Pr(FeO3)3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(5), two equivalent O(3), three equivalent O(4), and six equivalent O(1) atoms to form distorted SrO12 cuboctahedra that share corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Pr(1)O12 cuboctahedra, corners with six equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra,  a faceface with one Fe(4)O6 octahedra, faces with three equivalent Fe(3)O6 octahedra, and faces with four equivalent Fe(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(5), two equivalent O(3), three equivalent O(6), and six equivalent O(2) atoms to form distorted SrO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Pr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with four equivalent Fe(4)O6 octahedra. Pr(1) is bonded to one O(4), one O(6), two equivalent O(1), two equivalent O(2), two equivalent O(5), and four equivalent O(3) atoms to form distorted PrO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with six equivalent Pr(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(3)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Fe(4)O6 octahedra. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(3)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 12-14°. In the second Fe site, Fe(2) is bonded to two equivalent O(6) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Fe(4)O6 octahedra, faces with two equivalent Pr(1)O12 cuboctahedra, and faces with six equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 8-19°. In the third Fe site, Fe(3) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra, faces with two equivalent Pr(1)O12 cuboctahedra, and faces with six equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 12-14°. In the fourth Fe site, Fe(4) is bonded to one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with three equivalent Pr(1)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 8-19°. There are six inequivalent O sites. In the first O site, O(4) is bonded in a 2-coordinate geometry to three equivalent Sr(1), one Pr(1), one Fe(1), and one Fe(3) atom. In the second O site, O(5) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), two equivalent Pr(1), one Fe(1), and one Fe(4) atom. In the third O site, O(6) is bonded in a 2-coordinate geometry to three equivalent Sr(2), one Pr(1), one Fe(2), and one Fe(4) atom. In the fourth O site, O(1) is bonded in a 6-coordinate geometry to three equivalent Sr(1), one Pr(1), one Fe(1), and one Fe(3) atom. In the fifth O site, O(2) is bonded to three equivalent Sr(2), one Pr(1), one Fe(2), and one Fe(4) atom to form a mixture of distorted corner, face, and edge-sharing OSr3PrFe2 octahedra. The corner-sharing octahedral tilt angles range from 0-63°. In the sixth O site, O(3) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), two equivalent Pr(1), one Fe(1), and one Fe(4) atom. is represented by the CIF file [CIF]
data_Sr2Pr(FeO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.537
_cell_length_b   5.537
_cell_length_c   13.570
_cell_angle_alpha   89.457
_cell_angle_beta   89.457
_cell_angle_gamma   59.929
_symmetry_Int_Tables_number   1
_cell_volume   360.025
_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  0.832  0.832  0.084  1.0
  Sr  Sr1  1  0.165  0.165  0.417  1.0
  Sr  Sr2  1  0.168  0.168  0.916  1.0
  Sr  Sr3  1  0.835  0.835  0.583  1.0
  Pr  Pr4  1  0.508  0.508  0.750  1.0
  Pr  Pr5  1  0.492  0.492  0.250  1.0
  Fe  Fe6  1  0.167  0.167  0.166  1.0
  Fe  Fe7  1  0.500  0.500  0.500  1.0
  Fe  Fe8  1  0.833  0.833  0.834  1.0
  Fe  Fe9  1  0.500  0.500  0.000  1.0
  Fe  Fe10  1  0.833  0.833  0.334  1.0
  Fe  Fe11  1  0.167  0.167  0.666  1.0
  O  O12  1  0.324  0.810  0.096  1.0
  O  O13  1  0.651  0.157  0.421  1.0
  O  O14  1  0.975  0.485  0.757  1.0
  O  O15  1  0.190  0.676  0.904  1.0
  O  O16  1  0.515  0.025  0.243  1.0
  O  O17  1  0.843  0.349  0.579  1.0
  O  O18  1  0.810  0.324  0.096  1.0
  O  O19  1  0.157  0.651  0.421  1.0
  O  O20  1  0.485  0.975  0.757  1.0
  O  O21  1  0.676  0.190  0.904  1.0
  O  O22  1  0.025  0.515  0.243  1.0
  O  O23  1  0.349  0.843  0.579  1.0
  O  O24  1  0.679  0.679  0.929  1.0
  O  O25  1  0.014  0.014  0.263  1.0
  O  O26  1  0.352  0.352  0.603  1.0
  O  O27  1  0.321  0.321  0.071  1.0
  O  O28  1  0.648  0.648  0.397  1.0
  O  O29  1  0.986  0.986  0.737  1.0
[/CIF]
.