The material structure described by ErNbO2 crystallizes in the tetragonal I4_1/amd space group. Er(1) is bonded to six equivalent O(1) atoms to form edge-sharing ErO6 octahedra. Nb(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to three equivalent Er(1) and two equivalent Nb(1) atoms to form a mixture of distorted corner and edge-sharing OEr3Nb2 trigonal bipyramids. is represented by the CIF card [CIF]
data_ErNbO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.191
_cell_length_b   7.191
_cell_length_c   7.191
_cell_angle_alpha   129.068
_cell_angle_beta   129.068
_cell_angle_gamma   74.900
_symmetry_Int_Tables_number   1
_cell_volume   218.313
_cell_formula_units_Z   4
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  0.875  0.625  0.250  1.0
  Er  Er1  1  0.375  0.625  0.750  1.0
  Er  Er2  1  0.375  0.625  0.250  1.0
  Er  Er3  1  0.375  0.125  0.750  1.0
  Nb  Nb4  1  0.375  0.125  0.250  1.0
  Nb  Nb5  1  0.875  0.125  0.750  1.0
  Nb  Nb6  1  0.875  0.125  0.250  1.0
  Nb  Nb7  1  0.875  0.625  0.750  1.0
  O  O8  1  0.175  0.413  0.238  1.0
  O  O9  1  0.175  0.937  0.762  1.0
  O  O10  1  0.163  0.425  0.738  1.0
  O  O11  1  0.575  0.837  0.262  1.0
  O  O12  1  0.687  0.425  0.262  1.0
  O  O13  1  0.575  0.313  0.738  1.0
  O  O14  1  0.587  0.825  0.762  1.0
  O  O15  1  0.063  0.825  0.238  1.0
[/CIF]
.
The material structure described by ErNbO2 crystallizes in the tetragonal I4_1/amd space group. Er(1) is bonded to six equivalent O(1) atoms to form edge-sharing ErO6 octahedra. Nb(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to three equivalent Er(1) and two equivalent Nb(1) atoms to form a mixture of distorted corner and edge-sharing OEr3Nb2 trigonal bipyramids. is represented by the CIF card [CIF]
data_ErNbO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.191
_cell_length_b   7.191
_cell_length_c   7.191
_cell_angle_alpha   129.068
_cell_angle_beta   129.068
_cell_angle_gamma   74.900
_symmetry_Int_Tables_number   1
_cell_volume   218.313
_cell_formula_units_Z   4
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  0.875  0.625  0.250  1.0
  Er  Er1  1  0.375  0.625  0.750  1.0
  Er  Er2  1  0.375  0.625  0.250  1.0
  Er  Er3  1  0.375  0.125  0.750  1.0
  Nb  Nb4  1  0.375  0.125  0.250  1.0
  Nb  Nb5  1  0.875  0.125  0.750  1.0
  Nb  Nb6  1  0.875  0.125  0.250  1.0
  Nb  Nb7  1  0.875  0.625  0.750  1.0
  O  O8  1  0.175  0.413  0.238  1.0
  O  O9  1  0.175  0.937  0.762  1.0
  O  O10  1  0.163  0.425  0.738  1.0
  O  O11  1  0.575  0.837  0.262  1.0
  O  O12  1  0.687  0.425  0.262  1.0
  O  O13  1  0.575  0.313  0.738  1.0
  O  O14  1  0.587  0.825  0.762  1.0
  O  O15  1  0.063  0.825  0.238  1.0
[/CIF]
.