data_[Pm6Nd4U2N12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  U  1.3800  1.7500  0.9913
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.2161]
_cell_length_b [10.7561]
_cell_length_c [6.1915]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.5721]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm3Nd2UN6]
_chemical_formula_sum '[Pm6 Nd4 U2 N12]'
_cell_volume [390.0501]
_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
[
  Pm  Pm0  4  0.0000  0.1660  0.5000  1
  Pm  Pm1  2  0.0000  0.5000  0.5000  1
  Nd  Nd2  4  0.0000  0.3336  0.0000  1
  U  U3  2  0.0000  0.0000  0.0000  1
  N  N4  8  0.2274  0.1498  0.2323  1
  N  N5  4  0.2231  0.0000  0.7658  1
]