The crystal structure described by Pr2CeO6 is Fluorite-derived structured and crystallizes in the tetragonal I4/mmm space group. Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. Ce(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pr(1) and two equivalent Ce(1) atoms to form OCe2Pr2 tetrahedra that share corners with six equivalent O(2)Pr4 tetrahedra, corners with ten equivalent O(1)Ce2Pr2 tetrahedra,  an edgeedge with one O(2)Pr4 tetrahedra, and edges with five equivalent O(1)Ce2Pr2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Pr(1) atoms to form OPr4 tetrahedra that share corners with four equivalent O(2)Pr4 tetrahedra, corners with twelve equivalent O(1)Ce2Pr2 tetrahedra, edges with two equivalent O(1)Ce2Pr2 tetrahedra, and edges with four equivalent O(2)Pr4 tetrahedra. is represented by the CIF file [CIF]
data_CePr2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.112
_cell_length_b   9.112
_cell_length_c   9.112
_cell_angle_alpha   155.061
_cell_angle_beta   155.061
_cell_angle_gamma   35.560
_symmetry_Int_Tables_number   1
_cell_volume   134.344
_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  0.339  0.339  0.000  1.0
  Pr  Pr2  1  0.661  0.661  0.000  1.0
  O  O3  1  0.423  0.923  0.500  1.0
  O  O4  1  0.750  0.250  0.500  1.0
  O  O5  1  0.077  0.577  0.500  1.0
  O  O6  1  0.250  0.750  0.500  1.0
  O  O7  1  0.577  0.077  0.500  1.0
  O  O8  1  0.923  0.423  0.500  1.0
[/CIF]
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The crystal structure described by Pr2CeO6 is Fluorite-derived structured and crystallizes in the tetragonal I4/mmm space group. Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. Ce(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pr(1) and two equivalent Ce(1) atoms to form OCe2Pr2 tetrahedra that share corners with six equivalent O(2)Pr4 tetrahedra, corners with ten equivalent O(1)Ce2Pr2 tetrahedra,  an edgeedge with one O(2)Pr4 tetrahedra, and edges with five equivalent O(1)Ce2Pr2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Pr(1) atoms to form OPr4 tetrahedra that share corners with four equivalent O(2)Pr4 tetrahedra, corners with twelve equivalent O(1)Ce2Pr2 tetrahedra, edges with two equivalent O(1)Ce2Pr2 tetrahedra, and edges with four equivalent O(2)Pr4 tetrahedra. is represented by the CIF file [CIF]
data_CePr2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.112
_cell_length_b   9.112
_cell_length_c   9.112
_cell_angle_alpha   155.061
_cell_angle_beta   155.061
_cell_angle_gamma   35.560
_symmetry_Int_Tables_number   1
_cell_volume   134.344
_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  0.339  0.339  0.000  1.0
  Pr  Pr2  1  0.661  0.661  0.000  1.0
  O  O3  1  0.423  0.923  0.500  1.0
  O  O4  1  0.750  0.250  0.500  1.0
  O  O5  1  0.077  0.577  0.500  1.0
  O  O6  1  0.250  0.750  0.500  1.0
  O  O7  1  0.577  0.077  0.500  1.0
  O  O8  1  0.923  0.423  0.500  1.0
[/CIF]
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