data_[Er2Lu2C2Se2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Lu  1.2700  1.7500  1.0010
  C  2.5500  0.7000  0.3000
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [3.6937]
_cell_length_b [3.6937]
_cell_length_c [13.0379]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [ErLuCSe]
_chemical_formula_sum '[Er2 Lu2 C2 Se2]'
_cell_volume [154.0534]
_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
[
  Er  Er0  2  0.3333  0.6667  0.1009  1
  Lu  Lu1  2  0.3333  0.6667  0.4024  1
  Se  Se2  2  0.3333  0.6667  0.7466  1
  C  C3  1  0.0000  0.0000  0.0000  1
  C  C4  1  0.0000  0.0000  0.5000  1
]