data_[Er2Np1U1C4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Np  1.3600  1.7500  1.0000
  U  1.3800  1.7500  0.9913
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.0126]
_cell_length_b [3.5584]
_cell_length_c [6.1565]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4670]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Er2NpUC4]
_chemical_formula_sum '[Er2 Np1 U1 C4]'
_cell_volume [124.1886]
_cell_formula_units_Z [1]
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
[
  Er  Er0  1  0.0000  0.0000  0.0000  1
  Er  Er1  1  0.0000  0.5000  0.5000  1
  Np  Np2  1  0.5000  0.5000  0.0000  1
  U  U3  1  0.5000  0.0000  0.5000  1
  C  C4  2  0.2803  0.0000  0.7558  1
  C  C5  2  0.2840  0.5000  0.2600  1
]