data_[U12Ta9Nb3C24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  U  1.3800  1.7500  0.9913
  Ta  1.5000  1.4500  0.8200
  Nb  1.6000  1.4500  0.8200
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.5093]
_cell_length_b [6.5093]
_cell_length_c [16.8596]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [U4Ta3NbC8]
_chemical_formula_sum '[U12 Ta9 Nb3 C24]'
_cell_volume [618.6421]
_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
[
  U  U0  9  0.0000  0.5000  0.5000  1
  U  U1  3  -0.0000  -0.0000  0.5000  1
  Ta  Ta2  9  0.0000  0.5000  0.0000  1
  Nb  Nb3  3  -0.0000  -0.0000  0.0000  1
  C  C4  18  0.0023  0.5011  0.2577  1
  C  C5  6  0.0000  0.0000  0.2583  1
]