The crystal structure described by PrCeO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Pr(1) is bonded to six equivalent O(1) atoms to form PrO6 octahedra that share corners with six equivalent Ce(1)O6 octahedra, edges with six equivalent Pr(1)O6 octahedra, and edges with six equivalent Ce(1)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. Ce(1) is bonded to six equivalent O(1) atoms to form CeO6 octahedra that share corners with six equivalent Pr(1)O6 octahedra, edges with six equivalent Pr(1)O6 octahedra, and edges with six equivalent Ce(1)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of corner and edge-sharing OCe3Pr3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_CePrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.161
_cell_length_b   6.161
_cell_length_c   6.161
_cell_angle_alpha   33.732
_cell_angle_beta   33.732
_cell_angle_gamma   33.732
_symmetry_Int_Tables_number   1
_cell_volume   64.261
_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
  Ce  Ce0  1  0.000  0.000  0.000  1.0
  Pr  Pr1  1  0.500  0.500  0.500  1.0
  O  O2  1  0.255  0.255  0.255  1.0
  O  O3  1  0.745  0.745  0.745  1.0
[/CIF]
.
The crystal structure described by PrCeO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Pr(1) is bonded to six equivalent O(1) atoms to form PrO6 octahedra that share corners with six equivalent Ce(1)O6 octahedra, edges with six equivalent Pr(1)O6 octahedra, and edges with six equivalent Ce(1)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. Ce(1) is bonded to six equivalent O(1) atoms to form CeO6 octahedra that share corners with six equivalent Pr(1)O6 octahedra, edges with six equivalent Pr(1)O6 octahedra, and edges with six equivalent Ce(1)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. O(1) is bonded to three equivalent Pr(1) and three equivalent Ce(1) atoms to form a mixture of corner and edge-sharing OCe3Pr3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_CePrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.161
_cell_length_b   6.161
_cell_length_c   6.161
_cell_angle_alpha   33.732
_cell_angle_beta   33.732
_cell_angle_gamma   33.732
_symmetry_Int_Tables_number   1
_cell_volume   64.261
_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
  Ce  Ce0  1  0.000  0.000  0.000  1.0
  Pr  Pr1  1  0.500  0.500  0.500  1.0
  O  O2  1  0.255  0.255  0.255  1.0
  O  O3  1  0.745  0.745  0.745  1.0
[/CIF]
.