data_[Rb6Na6As4]
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
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [6.8012]
_cell_length_b [17.3916]
_cell_length_c [18.6103]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Rb3Na3As2]
_chemical_formula_sum '[Rb6 Na6 As4]'
_cell_volume [2201.3072]
_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  0.4674  0.1619  0.4188  1
  Rb  Rb1  2  0.0107  0.0000  0.6127  1
  Na  Na2  4  0.2168  0.2533  0.5680  1
  Na  Na3  2  0.4572  0.5000  0.4312  1
  As  As4  4  0.4739  0.3517  0.4913  1
]