data_[Rb2Al2Sn2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Al  1.6100  1.2500  0.6750
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pm]
_cell_length_a [4.6691]
_cell_length_b [4.7556]
_cell_length_c [9.2173]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.2876]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [6]
_chemical_formula_structural [RbAlSn]
_chemical_formula_sum '[Rb2 Al2 Sn2]'
_cell_volume [204.6146]
_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  1  0.1374  0.0000  0.5288  1
  Rb  Rb1  1  0.6262  0.5000  0.2194  1
  Al  Al2  1  0.1142  0.0000  0.0668  1
  Al  Al3  1  0.1388  0.5000  0.8878  1
  Sn  Sn4  1  0.6011  0.0000  0.8847  1
  Sn  Sn5  1  0.6544  0.5000  0.6859  1
]