data_[U6C2Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  U  1.3800  1.7500  0.9913
  C  2.5500  0.7000  0.3000
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.9174]
_cell_length_b [5.5664]
_cell_length_c [11.2340]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [U3CSe2]
_chemical_formula_sum '[U6 C2 Se4]'
_cell_volume [244.9639]
_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
[
  U  U0  4  0.0000  0.5000  0.3874  1
  U  U1  2  0.0000  0.5000  0.0000  1
  Se  Se2  4  0.0000  0.0000  0.3111  1
  C  C3  2  0.0000  0.0000  0.0000  1
]