The compound described by Gd2O3 crystallizes in the trigonal P-3m1 space group. Gd(1) is bonded in a 7-coordinate geometry to three equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to six equivalent Gd(1) atoms to form OGd6 octahedra that share corners with twelve equivalent O(2)Gd4 tetrahedra, edges with six equivalent O(1)Gd6 octahedra, and edges with six equivalent O(2)Gd4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Gd(1) atoms to form OGd4 tetrahedra that share corners with six equivalent O(1)Gd6 octahedra, corners with six equivalent O(2)Gd4 tetrahedra, edges with three equivalent O(1)Gd6 octahedra, and edges with three equivalent O(2)Gd4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-56°. is represented by the CIF file [CIF]
data_Gd2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.729
_cell_length_b   3.729
_cell_length_c   5.894
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   70.962
_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
  Gd  Gd0  1  0.667  0.333  0.752  1.0
  Gd  Gd1  1  0.333  0.667  0.248  1.0
  O  O2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.667  0.333  0.354  1.0
  O  O4  1  0.333  0.667  0.646  1.0
[/CIF]
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The compound described by Gd2O3 crystallizes in the trigonal P-3m1 space group. Gd(1) is bonded in a 7-coordinate geometry to three equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to six equivalent Gd(1) atoms to form OGd6 octahedra that share corners with twelve equivalent O(2)Gd4 tetrahedra, edges with six equivalent O(1)Gd6 octahedra, and edges with six equivalent O(2)Gd4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Gd(1) atoms to form OGd4 tetrahedra that share corners with six equivalent O(1)Gd6 octahedra, corners with six equivalent O(2)Gd4 tetrahedra, edges with three equivalent O(1)Gd6 octahedra, and edges with three equivalent O(2)Gd4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-56°. is represented by the CIF file [CIF]
data_Gd2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.729
_cell_length_b   3.729
_cell_length_c   5.894
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   70.962
_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
  Gd  Gd0  1  0.667  0.333  0.752  1.0
  Gd  Gd1  1  0.333  0.667  0.248  1.0
  O  O2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.667  0.333  0.354  1.0
  O  O4  1  0.333  0.667  0.646  1.0
[/CIF]
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