The crystal structure described by ErO2 is Baddeleyite-like structured and crystallizes in the monoclinic P2_1/m space group. Er(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 in a distorted trigonal planar geometry to three equivalent Er(1) atoms. In the second O site, O(2) is bonded to four equivalent Er(1) atoms to form a mixture of corner and edge-sharing OEr4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.608
_cell_length_b   4.157
_cell_length_c   6.106
_cell_angle_alpha   72.672
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   87.427
_cell_formula_units_Z   2
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  0.250  0.171  0.186  1.0
  Er  Er1  1  0.750  0.829  0.814  1.0
  O  O2  1  0.250  0.817  0.553  1.0
  O  O3  1  0.750  0.183  0.447  1.0
  O  O4  1  0.250  0.733  0.048  1.0
  O  O5  1  0.750  0.267  0.952  1.0
[/CIF]
.
The crystal structure described by ErO2 is Baddeleyite-like structured and crystallizes in the monoclinic P2_1/m space group. Er(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 in a distorted trigonal planar geometry to three equivalent Er(1) atoms. In the second O site, O(2) is bonded to four equivalent Er(1) atoms to form a mixture of corner and edge-sharing OEr4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.608
_cell_length_b   4.157
_cell_length_c   6.106
_cell_angle_alpha   72.672
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   87.427
_cell_formula_units_Z   2
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  0.250  0.171  0.186  1.0
  Er  Er1  1  0.750  0.829  0.814  1.0
  O  O2  1  0.250  0.817  0.553  1.0
  O  O3  1  0.750  0.183  0.447  1.0
  O  O4  1  0.250  0.733  0.048  1.0
  O  O5  1  0.750  0.267  0.952  1.0
[/CIF]
.