data_[Sm3Dy3Se3N3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Dy  1.2200  1.7500  1.1310
  Se  2.5500  1.1500  1.0133
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [3.7157]
_cell_length_b [3.7157]
_cell_length_c [19.8405]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [SmDySeN]
_chemical_formula_sum '[Sm3 Dy3 Se3 N3]'
_cell_volume [237.2226]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.9838  1
  Dy  Dy1  3  0.0000  0.0000  0.5173  1
  Se  Se2  3  0.0000  0.0000  0.7527  1
  N  N3  3  0.0000  0.0000  0.2462  1
]