data_[Rb8Na4Cu4Cl16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Cu  1.9000  1.3500  0.8200
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.2464]
_cell_length_b [17.2308]
_cell_length_c [15.7767]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Rb2NaCuCl4]
_chemical_formula_sum '[Rb8 Na4 Cu4 Cl16]'
_cell_volume [1154.3519]
_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  8  0.0000  0.3719  0.5413  1.0
  Na  Na1  4  0.0000  0.2082  0.7500  1.0
  Cu  Cu2  4  0.0000  0.1652  0.2500  1.0
  Cl  Cl3  8  0.0000  0.2630  0.1354  1.0
  Cl  Cl4  4  0.0000  0.0000  0.0000  1.0
  Cl  Cl5  4  0.0000  0.3883  0.7500  1.0
]