data_[Rb3Na6Zn3]
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
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [5.4390]
_cell_length_b [5.4390]
_cell_length_c [19.7693]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [RbNa2Zn]
_chemical_formula_sum '[Rb3 Na6 Zn3]'
_cell_volume [506.4773]
_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  0.5058  1
  Na  Na1  3  0.0000  0.0000  0.7068  1
  Na  Na2  3  0.0000  0.0000  0.9778  1
  Zn  Zn3  3  0.0000  0.0000  0.3095  1
]