The crystal structure described by Er2TeO2 crystallizes in the trigonal P-3m1 space group. Er(1) is bonded in a 4-coordinate geometry to three equivalent Te(1) and four equivalent O(1) atoms. Te(1) is bonded to six equivalent Er(1) atoms to form distorted TeEr6 octahedra that share corners with twelve equivalent O(1)Er4 tetrahedra, edges with six equivalent Te(1)Er6 octahedra, and edges with six equivalent O(1)Er4 tetrahedra. O(1) is bonded to four equivalent Er(1) atoms to form OEr4 tetrahedra that share corners with six equivalent Te(1)Er6 octahedra, corners with six equivalent O(1)Er4 tetrahedra, edges with three equivalent Te(1)Er6 octahedra, and edges with three equivalent O(1)Er4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-45°. is represented by the CIF file [CIF]
data_Er2TeO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.878
_cell_length_b   3.878
_cell_length_c   7.199
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   93.762
_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
  Er  Er0  1  0.667  0.333  0.194  1.0
  Er  Er1  1  0.333  0.667  0.806  1.0
  Te  Te2  1  0.000  0.000  0.500  1.0
  O  O3  1  0.667  0.333  0.880  1.0
  O  O4  1  0.333  0.667  0.120  1.0
[/CIF]
.
The crystal structure described by Er2TeO2 crystallizes in the trigonal P-3m1 space group. Er(1) is bonded in a 4-coordinate geometry to three equivalent Te(1) and four equivalent O(1) atoms. Te(1) is bonded to six equivalent Er(1) atoms to form distorted TeEr6 octahedra that share corners with twelve equivalent O(1)Er4 tetrahedra, edges with six equivalent Te(1)Er6 octahedra, and edges with six equivalent O(1)Er4 tetrahedra. O(1) is bonded to four equivalent Er(1) atoms to form OEr4 tetrahedra that share corners with six equivalent Te(1)Er6 octahedra, corners with six equivalent O(1)Er4 tetrahedra, edges with three equivalent Te(1)Er6 octahedra, and edges with three equivalent O(1)Er4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-45°. is represented by the CIF file [CIF]
data_Er2TeO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.878
_cell_length_b   3.878
_cell_length_c   7.199
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   93.762
_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
  Er  Er0  1  0.667  0.333  0.194  1.0
  Er  Er1  1  0.333  0.667  0.806  1.0
  Te  Te2  1  0.000  0.000  0.500  1.0
  O  O3  1  0.667  0.333  0.880  1.0
  O  O4  1  0.333  0.667  0.120  1.0
[/CIF]
.