data_[Rb4Li4Zr2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Li  0.9800  1.4500  0.9000
  Zr  1.3300  1.5500  0.8600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.3875]
_cell_length_b [3.3838]
_cell_length_c [6.5935]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.6453]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Li2ZrO4]
_chemical_formula_sum '[Rb4 Li4 Zr2 O8]'
_cell_volume [260.2921]
_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  0.1416  0.0000  0.5673  1
  Li  Li1  4  0.1807  0.5000  0.9836  1
  Zr  Zr2  2  0.0000  0.0000  0.0000  1
  O  O3  4  0.0163  0.5000  0.7994  1
  O  O4  4  0.1829  0.0000  0.1258  1
]