The structure described by PrCeO2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. Pr(1) is bonded to six O(1,1,1) atoms to form PrO6 octahedra that share corners with two equivalent Ce(1)O6 octahedra, corners with four equivalent Pr(1)O6 octahedra, edges with four equivalent Pr(1)O6 octahedra, and edges with eight equivalent Ce(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Ce(1) is bonded to six O(1,1) atoms to form CeO6 octahedra that share corners with two equivalent Pr(1)O6 octahedra, corners with four equivalent Ce(1)O6 octahedra, edges with four equivalent Ce(1)O6 octahedra, and edges with eight equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are four inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. is represented by the CIF card [CIF]
data_CePrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.177
_cell_length_b   6.177
_cell_length_c   6.177
_cell_angle_alpha   131.761
_cell_angle_beta   131.761
_cell_angle_gamma   70.607
_symmetry_Int_Tables_number   1
_cell_volume   128.460
_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
  Ce  Ce0  1  0.500  0.500  0.000  1.0
  Ce  Ce1  1  0.250  0.750  0.500  1.0
  Pr  Pr2  1  0.000  0.000  0.000  1.0
  Pr  Pr3  1  0.750  0.250  0.500  1.0
  O  O4  1  0.252  0.252  0.000  1.0
  O  O5  1  0.498  0.998  0.500  1.0
  O  O6  1  0.748  0.748  0.000  1.0
  O  O7  1  0.002  0.502  0.500  1.0
[/CIF]
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The structure described by PrCeO2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. Pr(1) is bonded to six O(1,1,1) atoms to form PrO6 octahedra that share corners with two equivalent Ce(1)O6 octahedra, corners with four equivalent Pr(1)O6 octahedra, edges with four equivalent Pr(1)O6 octahedra, and edges with eight equivalent Ce(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Ce(1) is bonded to six O(1,1) atoms to form CeO6 octahedra that share corners with two equivalent Pr(1)O6 octahedra, corners with four equivalent Ce(1)O6 octahedra, edges with four equivalent Ce(1)O6 octahedra, and edges with eight equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are four inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe3Pr3 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. is represented by the CIF card [CIF]
data_CePrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.177
_cell_length_b   6.177
_cell_length_c   6.177
_cell_angle_alpha   131.761
_cell_angle_beta   131.761
_cell_angle_gamma   70.607
_symmetry_Int_Tables_number   1
_cell_volume   128.460
_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
  Ce  Ce0  1  0.500  0.500  0.000  1.0
  Ce  Ce1  1  0.250  0.750  0.500  1.0
  Pr  Pr2  1  0.000  0.000  0.000  1.0
  Pr  Pr3  1  0.750  0.250  0.500  1.0
  O  O4  1  0.252  0.252  0.000  1.0
  O  O5  1  0.498  0.998  0.500  1.0
  O  O6  1  0.748  0.748  0.000  1.0
  O  O7  1  0.002  0.502  0.500  1.0
[/CIF]
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