data_[Ac2U2C2Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  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 [P4/nmm]
_cell_length_a [4.0375]
_cell_length_b [4.0375]
_cell_length_c [15.7028]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [AcUCSe2]
_chemical_formula_sum '[Ac2 U2 C2 Se4]'
_cell_volume [255.9764]
_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
[
  Ac  Ac0  2  0.0000  0.5000  0.8600  1
  U  U1  2  0.0000  0.5000  0.4289  1
  C  C2  2  0.0000  0.0000  0.5000  1
  Se  Se3  2  0.0000  0.5000  0.0799  1
  Se  Se4  2  0.0000  0.5000  0.6690  1
]