data_[Sm4Zr2Se4N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Zr  1.3300  1.5500  0.8600
  Se  2.5500  1.1500  1.0133
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.2594]
_cell_length_b [4.2594]
_cell_length_c [15.0615]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Sm2Zr(SeN)2]
_chemical_formula_sum '[Sm4 Zr2 Se4 N4]'
_cell_volume [273.2587]
_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
[
  Sm  Sm0  4  0.0000  0.0000  0.3881  1
  Zr  Zr1  2  0.0000  0.0000  0.0000  1
  Se  Se2  4  0.0000  0.0000  0.1822  1
  N  N3  4  0.0000  0.5000  0.0000  1
]