data_[Sr6U4N12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  U  1.3800  1.7500  0.9913
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.2970]
_cell_length_b [4.2970]
_cell_length_c [20.9988]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Sr3U2N6]
_chemical_formula_sum '[Sr6 U4 N12]'
_cell_volume [387.7308]
_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
[
  Sr  Sr0  4  0.0000  0.0000  0.1870  1
  Sr  Sr1  2  0.0000  0.0000  0.0000  1
  U  U2  4  0.0000  0.0000  0.4039  1
  N  N3  8  0.0000  0.5000  0.0864  1
  N  N4  4  0.0000  0.0000  0.3077  1
]