data_[Pm12Sn4As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sn  1.9600  1.4500  0.8300
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [8.6091]
_cell_length_b [4.4044]
_cell_length_c [15.6877]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Pm3SnAs]
_chemical_formula_sum '[Pm12 Sn4 As4]'
_cell_volume [594.8377]
_cell_formula_units_Z [4]
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
[
  Pm  Pm0  4  0.0177  0.7500  0.3916  1
  Pm  Pm1  4  0.1491  0.7500  0.9684  1
  Pm  Pm2  4  0.1719  0.2500  0.2177  1
  Sn  Sn3  4  0.1063  0.2500  0.8141  1
  As  As4  4  0.1888  0.7500  0.5535  1
]