The compound described by SrPr3CrNiO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Cr(1) is bonded to one O(3), one O(5), and four equivalent O(1) atoms to form CrO6 octahedra that share corners with four equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. Ni(1) is bonded to one O(2), one O(4), and four equivalent O(1) atoms to form NiO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Pr(1), one Pr(2), one Pr(3), one Cr(1), and one Ni(1) atom to form distorted OSrPr3CrNi octahedra that share corners with two equivalent O(1)SrPr3CrNi octahedra, corners with three equivalent O(2)Pr5Ni octahedra, corners with three equivalent O(5)Sr2Pr3Cr octahedra, corners with three equivalent O(4)Sr2Pr3Ni octahedra, corners with three equivalent O(3)SrPr4Cr octahedra, edges with two equivalent O(1)SrPr3CrNi octahedra,  a faceface with one O(2)Pr5Ni octahedra,  a faceface with one O(5)Sr2Pr3Cr octahedra,  a faceface with one O(4)Sr2Pr3Ni octahedra,  a faceface with one O(3)SrPr4Cr octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 3-53°. In the second O site, O(2) is bonded to one Pr(1), two equivalent Pr(2), two equivalent Pr(3), and one Ni(1) atom to form distorted OPr5Ni octahedra that share  a cornercorner with one O(4)Sr2Pr3Ni octahedra, corners with four equivalent O(2)Pr5Ni octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(5)Sr2Pr3Cr octahedra, edges with two equivalent O(4)Sr2Pr3Ni octahedra, edges with four equivalent O(3)SrPr4Cr octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the third O site, O(3) is bonded to one Sr(1), two equivalent Pr(2), two equivalent Pr(3), and one Cr(1) atom to form distorted OSrPr4Cr octahedra that share  a cornercorner with one O(5)Sr2Pr3Cr octahedra, corners with four equivalent O(3)SrPr4Cr octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(5)Sr2Pr3Cr octahedra, edges with two equivalent O(4)Sr2Pr3Ni octahedra, edges with four equivalent O(2)Pr5Ni octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), one Pr(2), two equivalent Pr(1), and one Ni(1) atom to form distorted OSr2Pr3Ni octahedra that share  a cornercorner with one O(2)Pr5Ni octahedra, corners with four equivalent O(4)Sr2Pr3Ni octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(2)Pr5Ni octahedra, edges with two equivalent O(3)SrPr4Cr octahedra, edges with four equivalent O(5)Sr2Pr3Cr octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), one Pr(3), two equivalent Pr(1), and one Cr(1) atom to form distorted OSr2Pr3Cr octahedra that share  a cornercorner with one O(3)SrPr4Cr octahedra, corners with four equivalent O(5)Sr2Pr3Cr octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(2)Pr5Ni octahedra, edges with two equivalent O(3)SrPr4Cr octahedra, edges with four equivalent O(4)Sr2Pr3Ni octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-53°. is represented by the CIF file [CIF]
data_SrPr3CrNiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.804
_cell_length_b   6.804
_cell_length_c   5.504
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   132.250
_symmetry_Int_Tables_number   1
_cell_volume   188.598
_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  0.143  0.857  0.500  1.0
  Pr  Pr1  1  0.636  0.364  0.000  1.0
  Pr  Pr2  1  0.361  0.639  0.000  1.0
  Pr  Pr3  1  0.864  0.136  0.500  1.0
  Cr  Cr4  1  0.501  0.499  0.500  1.0
  Ni  Ni5  1  0.003  0.997  0.000  1.0
  O  O6  1  0.741  0.749  0.248  1.0
  O  O7  1  0.251  0.259  0.752  1.0
  O  O8  1  0.741  0.749  0.752  1.0
  O  O9  1  0.251  0.259  0.248  1.0
  O  O10  1  0.822  0.178  0.000  1.0
  O  O11  1  0.337  0.663  0.500  1.0
  O  O12  1  0.176  0.824  0.000  1.0
  O  O13  1  0.673  0.327  0.500  1.0
[/CIF]
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The compound described by SrPr3CrNiO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Cr(1) is bonded to one O(3), one O(5), and four equivalent O(1) atoms to form CrO6 octahedra that share corners with four equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. Ni(1) is bonded to one O(2), one O(4), and four equivalent O(1) atoms to form NiO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Pr(1), one Pr(2), one Pr(3), one Cr(1), and one Ni(1) atom to form distorted OSrPr3CrNi octahedra that share corners with two equivalent O(1)SrPr3CrNi octahedra, corners with three equivalent O(2)Pr5Ni octahedra, corners with three equivalent O(5)Sr2Pr3Cr octahedra, corners with three equivalent O(4)Sr2Pr3Ni octahedra, corners with three equivalent O(3)SrPr4Cr octahedra, edges with two equivalent O(1)SrPr3CrNi octahedra,  a faceface with one O(2)Pr5Ni octahedra,  a faceface with one O(5)Sr2Pr3Cr octahedra,  a faceface with one O(4)Sr2Pr3Ni octahedra,  a faceface with one O(3)SrPr4Cr octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 3-53°. In the second O site, O(2) is bonded to one Pr(1), two equivalent Pr(2), two equivalent Pr(3), and one Ni(1) atom to form distorted OPr5Ni octahedra that share  a cornercorner with one O(4)Sr2Pr3Ni octahedra, corners with four equivalent O(2)Pr5Ni octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(5)Sr2Pr3Cr octahedra, edges with two equivalent O(4)Sr2Pr3Ni octahedra, edges with four equivalent O(3)SrPr4Cr octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the third O site, O(3) is bonded to one Sr(1), two equivalent Pr(2), two equivalent Pr(3), and one Cr(1) atom to form distorted OSrPr4Cr octahedra that share  a cornercorner with one O(5)Sr2Pr3Cr octahedra, corners with four equivalent O(3)SrPr4Cr octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(5)Sr2Pr3Cr octahedra, edges with two equivalent O(4)Sr2Pr3Ni octahedra, edges with four equivalent O(2)Pr5Ni octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), one Pr(2), two equivalent Pr(1), and one Ni(1) atom to form distorted OSr2Pr3Ni octahedra that share  a cornercorner with one O(2)Pr5Ni octahedra, corners with four equivalent O(4)Sr2Pr3Ni octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(2)Pr5Ni octahedra, edges with two equivalent O(3)SrPr4Cr octahedra, edges with four equivalent O(5)Sr2Pr3Cr octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), one Pr(3), two equivalent Pr(1), and one Cr(1) atom to form distorted OSr2Pr3Cr octahedra that share  a cornercorner with one O(3)SrPr4Cr octahedra, corners with four equivalent O(5)Sr2Pr3Cr octahedra, corners with twelve equivalent O(1)SrPr3CrNi octahedra, edges with two equivalent O(2)Pr5Ni octahedra, edges with two equivalent O(3)SrPr4Cr octahedra, edges with four equivalent O(4)Sr2Pr3Ni octahedra, and faces with four equivalent O(1)SrPr3CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-53°. is represented by the CIF file [CIF]
data_SrPr3CrNiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.804
_cell_length_b   6.804
_cell_length_c   5.504
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   132.250
_symmetry_Int_Tables_number   1
_cell_volume   188.598
_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  0.143  0.857  0.500  1.0
  Pr  Pr1  1  0.636  0.364  0.000  1.0
  Pr  Pr2  1  0.361  0.639  0.000  1.0
  Pr  Pr3  1  0.864  0.136  0.500  1.0
  Cr  Cr4  1  0.501  0.499  0.500  1.0
  Ni  Ni5  1  0.003  0.997  0.000  1.0
  O  O6  1  0.741  0.749  0.248  1.0
  O  O7  1  0.251  0.259  0.752  1.0
  O  O8  1  0.741  0.749  0.752  1.0
  O  O9  1  0.251  0.259  0.248  1.0
  O  O10  1  0.822  0.178  0.000  1.0
  O  O11  1  0.337  0.663  0.500  1.0
  O  O12  1  0.176  0.824  0.000  1.0
  O  O13  1  0.673  0.327  0.500  1.0
[/CIF]
.