data_[Rb8Zn4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Zn  1.6500  1.3500  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.5999]
_cell_length_b [5.7656]
_cell_length_c [8.0106]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.0497]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2ZnO2]
_chemical_formula_sum '[Rb8 Zn4 O8]'
_cell_volume [476.4072]
_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
[
  Rb  Rb0  4  0.0398  0.0000  0.7635  1.0
  Rb  Rb1  4  0.1731  0.5000  0.5774  1.0
  Zn  Zn2  4  0.1321  0.5000  0.1298  1.0
  O  O3  4  0.0211  0.5000  0.8395  1.0
  O  O4  4  0.2018  0.0000  0.6368  1.0
]