data_[Rb3Na3Sr6Cl18]
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
  Sr  0.9500  2.0000  1.3200
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.5752]
_cell_length_b [7.5752]
_cell_length_c [20.0011]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [RbNaSr2Cl6]
_chemical_formula_sum '[Rb3 Na3 Sr6 Cl18]'
_cell_volume [993.9644]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.2042  1.0
  Na  Na1  3  0.0000  0.0000  0.6839  1.0
  Sr  Sr2  3  0.0000  0.0000  0.4813  1.0
  Sr  Sr3  3  0.0000  0.0000  0.9905  1.0
  Cl  Cl4  9  0.0106  0.3181  0.0777  1.0
  Cl  Cl5  9  0.0255  0.6047  0.2486  1.0
]