The compound described by Pr4CeO10 is Fluorite-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Ce(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pr(1) and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with four equivalent O(1)Pr4 tetrahedra, corners with six equivalent O(2)Ce2Pr2 tetrahedra, corners with six equivalent O(3)Pr4 tetrahedra,  an edgeedge with one O(2)Ce2Pr2 tetrahedra,  an edgeedge with one O(3)Pr4 tetrahedra, and edges with four equivalent O(1)Pr4 tetrahedra. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Ce(1) atoms to form OCe2Pr2 tetrahedra that share corners with six equivalent O(1)Pr4 tetrahedra, corners with ten equivalent O(2)Ce2Pr2 tetrahedra,  an edgeedge with one O(1)Pr4 tetrahedra, and edges with five equivalent O(2)Ce2Pr2 tetrahedra. In the third O site, O(3) is bonded to four equivalent Pr(2) atoms to form a mixture of corner and edge-sharing OPr4 tetrahedra. is represented by the CIF card [CIF]
data_CePr4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.897
_cell_length_b   14.897
_cell_length_c   14.897
_cell_angle_alpha   164.763
_cell_angle_beta   164.763
_cell_angle_gamma   21.613
_symmetry_Int_Tables_number   1
_cell_volume   228.321
_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  0.405  0.405  0.000  1.0
  Pr  Pr2  1  0.801  0.801  0.000  1.0
  Pr  Pr3  1  0.199  0.199  0.000  1.0
  Pr  Pr4  1  0.595  0.595  0.000  1.0
  O  O5  1  0.147  0.647  0.500  1.0
  O  O6  1  0.546  0.046  0.500  1.0
  O  O7  1  0.954  0.454  0.500  1.0
  O  O8  1  0.353  0.853  0.500  1.0
  O  O9  1  0.750  0.250  0.500  1.0
  O  O10  1  0.046  0.546  0.500  1.0
  O  O11  1  0.454  0.954  0.500  1.0
  O  O12  1  0.853  0.353  0.500  1.0
  O  O13  1  0.250  0.750  0.500  1.0
  O  O14  1  0.647  0.147  0.500  1.0
[/CIF]
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The compound described by Pr4CeO10 is Fluorite-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. Ce(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pr(1) and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with four equivalent O(1)Pr4 tetrahedra, corners with six equivalent O(2)Ce2Pr2 tetrahedra, corners with six equivalent O(3)Pr4 tetrahedra,  an edgeedge with one O(2)Ce2Pr2 tetrahedra,  an edgeedge with one O(3)Pr4 tetrahedra, and edges with four equivalent O(1)Pr4 tetrahedra. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Ce(1) atoms to form OCe2Pr2 tetrahedra that share corners with six equivalent O(1)Pr4 tetrahedra, corners with ten equivalent O(2)Ce2Pr2 tetrahedra,  an edgeedge with one O(1)Pr4 tetrahedra, and edges with five equivalent O(2)Ce2Pr2 tetrahedra. In the third O site, O(3) is bonded to four equivalent Pr(2) atoms to form a mixture of corner and edge-sharing OPr4 tetrahedra. is represented by the CIF card [CIF]
data_CePr4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.897
_cell_length_b   14.897
_cell_length_c   14.897
_cell_angle_alpha   164.763
_cell_angle_beta   164.763
_cell_angle_gamma   21.613
_symmetry_Int_Tables_number   1
_cell_volume   228.321
_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  0.405  0.405  0.000  1.0
  Pr  Pr2  1  0.801  0.801  0.000  1.0
  Pr  Pr3  1  0.199  0.199  0.000  1.0
  Pr  Pr4  1  0.595  0.595  0.000  1.0
  O  O5  1  0.147  0.647  0.500  1.0
  O  O6  1  0.546  0.046  0.500  1.0
  O  O7  1  0.954  0.454  0.500  1.0
  O  O8  1  0.353  0.853  0.500  1.0
  O  O9  1  0.750  0.250  0.500  1.0
  O  O10  1  0.046  0.546  0.500  1.0
  O  O11  1  0.454  0.954  0.500  1.0
  O  O12  1  0.853  0.353  0.500  1.0
  O  O13  1  0.250  0.750  0.500  1.0
  O  O14  1  0.647  0.147  0.500  1.0
[/CIF]
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