data_[Sm6Er4Np2N12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
  Np  1.3600  1.7500  1.0000
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.0371]
_cell_length_b [10.4627]
_cell_length_c [6.0759]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.3399]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm3Er2NpN6]
_chemical_formula_sum '[Sm6 Er4 Np2 N12]'
_cell_volume [362.1226]
_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  0.1684  0.5000  1
  Sm  Sm1  2  0.0000  0.5000  0.5000  1
  Er  Er2  4  0.0000  0.3335  0.0000  1
  Np  Np3  2  0.0000  0.0000  0.0000  1
  N  N4  8  0.2354  0.1592  0.2284  1
  N  N5  4  0.2417  0.0000  0.7714  1
]