data_[Rb6Sr4Ir2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sr  0.9500  2.0000  1.3200
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.1835]
_cell_length_b [10.7010]
_cell_length_c [6.7573]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.7107]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Sr2IrO6]
_chemical_formula_sum '[Rb6 Sr4 Ir2 O12]'
_cell_volume [425.9366]
_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
[
  Rb  Rb0  4  0.0000  0.1648  0.5000  1
  Rb  Rb1  2  0.0000  0.5000  0.5000  1
  Sr  Sr2  4  0.0000  0.3333  0.0000  1
  Ir  Ir3  2  0.0000  0.0000  0.0000  1
  O  O4  8  0.1977  0.1378  0.1784  1
  O  O5  4  0.2167  0.0000  0.8197  1
]