data_[Sm8Tl4N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Tl  1.6200  1.9000  1.3325
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.6096]
_cell_length_b [19.7071]
_cell_length_c [5.0505]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Sm2TlN]
_chemical_formula_sum '[Sm8 Tl4 N4]'
_cell_volume [359.2618]
_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
[
  Sm  Sm0  4  0.0000  0.2118  0.7500  1.0
  Sm  Sm1  4  0.0000  0.3859  0.7500  1.0
  Tl  Tl2  4  0.0000  0.0463  0.7500  1.0
  N  N3  4  0.0000  0.1994  0.2500  1.0
]