data_[Na2Sr2Sn2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.8949]
_cell_length_b [5.9502]
_cell_length_c [6.7965]
_cell_angle_alpha [73.3946]
_cell_angle_beta [86.0224]
_cell_angle_gamma [61.6155]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [NaSrSn]
_chemical_formula_sum '[Na2 Sr2 Sn2]'
_cell_volume [200.3618]
_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
[
  Na  Na0  2  0.0073  0.4123  0.2859  1.0
  Sr  Sr1  2  0.3286  0.8888  0.7936  1.0
  Sn  Sn2  2  0.3527  0.7291  0.3103  1.0
]