The crystal structure described by Ce2O3 is Spinel-derived structured and crystallizes in the cubic Ia-3 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to six equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing CeO6 octahedra. The corner-sharing octahedral tilt angles are 58°. In the second Ce site, Ce(2) is bonded to six equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing CeO6 octahedra. The corner-sharing octahedral tilt angles range from 56-58°. O(1) is bonded to one Ce(1) and three equivalent Ce(2) atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.692
_cell_length_b   9.692
_cell_length_c   9.692
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   700.756
_cell_formula_units_Z   8
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  0.500  1.0
  Ce  Ce1  1  0.000  0.000  0.500  1.0
  Ce  Ce2  1  0.500  0.000  0.000  1.0
  Ce  Ce3  1  0.000  0.500  0.000  1.0
  Ce  Ce4  1  0.250  0.222  0.972  1.0
  Ce  Ce5  1  0.278  0.528  0.750  1.0
  Ce  Ce6  1  0.528  0.750  0.278  1.0
  Ce  Ce7  1  0.222  0.972  0.250  1.0
  Ce  Ce8  1  0.972  0.250  0.222  1.0
  Ce  Ce9  1  0.750  0.278  0.528  1.0
  Ce  Ce10  1  0.750  0.778  0.028  1.0
  Ce  Ce11  1  0.722  0.472  0.250  1.0
  Ce  Ce12  1  0.472  0.250  0.722  1.0
  Ce  Ce13  1  0.778  0.028  0.750  1.0
  Ce  Ce14  1  0.028  0.750  0.778  1.0
  Ce  Ce15  1  0.250  0.722  0.472  1.0
  O  O16  1  0.527  0.768  0.538  1.0
  O  O17  1  0.989  0.962  0.730  1.0
  O  O18  1  0.259  0.770  0.732  1.0
  O  O19  1  0.511  0.241  0.973  1.0
  O  O20  1  0.962  0.730  0.989  1.0
  O  O21  1  0.732  0.259  0.770  1.0
  O  O22  1  0.241  0.973  0.511  1.0
  O  O23  1  0.538  0.527  0.768  1.0
  O  O24  1  0.768  0.538  0.527  1.0
  O  O25  1  0.730  0.989  0.962  1.0
  O  O26  1  0.770  0.732  0.259  1.0
  O  O27  1  0.973  0.511  0.241  1.0
  O  O28  1  0.473  0.232  0.462  1.0
  O  O29  1  0.011  0.038  0.270  1.0
  O  O30  1  0.741  0.230  0.268  1.0
  O  O31  1  0.489  0.759  0.027  1.0
  O  O32  1  0.038  0.270  0.011  1.0
  O  O33  1  0.268  0.741  0.230  1.0
  O  O34  1  0.759  0.027  0.489  1.0
  O  O35  1  0.462  0.473  0.232  1.0
  O  O36  1  0.232  0.462  0.473  1.0
  O  O37  1  0.270  0.011  0.038  1.0
  O  O38  1  0.230  0.268  0.741  1.0
  O  O39  1  0.027  0.489  0.759  1.0
[/CIF]
.
The crystal structure described by Ce2O3 is Spinel-derived structured and crystallizes in the cubic Ia-3 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to six equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing CeO6 octahedra. The corner-sharing octahedral tilt angles are 58°. In the second Ce site, Ce(2) is bonded to six equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing CeO6 octahedra. The corner-sharing octahedral tilt angles range from 56-58°. O(1) is bonded to one Ce(1) and three equivalent Ce(2) atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.692
_cell_length_b   9.692
_cell_length_c   9.692
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   700.756
_cell_formula_units_Z   8
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  0.500  1.0
  Ce  Ce1  1  0.000  0.000  0.500  1.0
  Ce  Ce2  1  0.500  0.000  0.000  1.0
  Ce  Ce3  1  0.000  0.500  0.000  1.0
  Ce  Ce4  1  0.250  0.222  0.972  1.0
  Ce  Ce5  1  0.278  0.528  0.750  1.0
  Ce  Ce6  1  0.528  0.750  0.278  1.0
  Ce  Ce7  1  0.222  0.972  0.250  1.0
  Ce  Ce8  1  0.972  0.250  0.222  1.0
  Ce  Ce9  1  0.750  0.278  0.528  1.0
  Ce  Ce10  1  0.750  0.778  0.028  1.0
  Ce  Ce11  1  0.722  0.472  0.250  1.0
  Ce  Ce12  1  0.472  0.250  0.722  1.0
  Ce  Ce13  1  0.778  0.028  0.750  1.0
  Ce  Ce14  1  0.028  0.750  0.778  1.0
  Ce  Ce15  1  0.250  0.722  0.472  1.0
  O  O16  1  0.527  0.768  0.538  1.0
  O  O17  1  0.989  0.962  0.730  1.0
  O  O18  1  0.259  0.770  0.732  1.0
  O  O19  1  0.511  0.241  0.973  1.0
  O  O20  1  0.962  0.730  0.989  1.0
  O  O21  1  0.732  0.259  0.770  1.0
  O  O22  1  0.241  0.973  0.511  1.0
  O  O23  1  0.538  0.527  0.768  1.0
  O  O24  1  0.768  0.538  0.527  1.0
  O  O25  1  0.730  0.989  0.962  1.0
  O  O26  1  0.770  0.732  0.259  1.0
  O  O27  1  0.973  0.511  0.241  1.0
  O  O28  1  0.473  0.232  0.462  1.0
  O  O29  1  0.011  0.038  0.270  1.0
  O  O30  1  0.741  0.230  0.268  1.0
  O  O31  1  0.489  0.759  0.027  1.0
  O  O32  1  0.038  0.270  0.011  1.0
  O  O33  1  0.268  0.741  0.230  1.0
  O  O34  1  0.759  0.027  0.489  1.0
  O  O35  1  0.462  0.473  0.232  1.0
  O  O36  1  0.232  0.462  0.473  1.0
  O  O37  1  0.270  0.011  0.038  1.0
  O  O38  1  0.230  0.268  0.741  1.0
  O  O39  1  0.027  0.489  0.759  1.0
[/CIF]
.