The crystal structure described by IrO2 is trigonal omega-like structured and crystallizes in the tetragonal I4_1/amd space group. Ir(1) is bonded to six equivalent O(1) atoms to form a mixture of corner and edge-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 23°. O(1) is bonded in a T-shaped geometry to three equivalent Ir(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_IrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.623
_cell_length_b   5.623
_cell_length_c   5.623
_cell_angle_alpha   139.144
_cell_angle_beta   139.144
_cell_angle_gamma   59.156
_symmetry_Int_Tables_number   1
_cell_volume   75.348
_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
  Ir  Ir0  1  0.000  0.000  0.000  1.0
  Ir  Ir1  1  0.750  0.250  0.500  1.0
  O  O2  1  0.960  0.460  0.500  1.0
  O  O3  1  0.210  0.210  0.000  1.0
  O  O4  1  0.540  0.040  0.500  1.0
  O  O5  1  0.790  0.790  0.000  1.0
[/CIF]
.
The crystal structure described by IrO2 is trigonal omega-like structured and crystallizes in the tetragonal I4_1/amd space group. Ir(1) is bonded to six equivalent O(1) atoms to form a mixture of corner and edge-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 23°. O(1) is bonded in a T-shaped geometry to three equivalent Ir(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_IrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.623
_cell_length_b   5.623
_cell_length_c   5.623
_cell_angle_alpha   139.144
_cell_angle_beta   139.144
_cell_angle_gamma   59.156
_symmetry_Int_Tables_number   1
_cell_volume   75.348
_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
  Ir  Ir0  1  0.000  0.000  0.000  1.0
  Ir  Ir1  1  0.750  0.250  0.500  1.0
  O  O2  1  0.960  0.460  0.500  1.0
  O  O3  1  0.210  0.210  0.000  1.0
  O  O4  1  0.540  0.040  0.500  1.0
  O  O5  1  0.790  0.790  0.000  1.0
[/CIF]
.