data_[Na3Mg2Sn4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.1719]
_cell_length_b [5.1719]
_cell_length_c [9.8838]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [Na3(MgSn2)2]
_chemical_formula_sum '[Na3 Mg2 Sn4]'
_cell_volume [228.9609]
_cell_formula_units_Z [1]
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
[
  Na  Na0  2  0.3333  0.6667  0.5629  1
  Na  Na1  1  0.0000  0.0000  0.0000  1
  Mg  Mg2  2  0.3333  0.6667  0.2215  1
  Sn  Sn3  2  0.0000  0.0000  0.3410  1
  Sn  Sn4  2  0.3333  0.6667  0.9001  1
]