data_[Er24Tm4Se32]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Fm-3m]
_cell_length_a [11.3756]
_cell_length_b [11.3756]
_cell_length_c [11.3756]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [225]
_chemical_formula_structural [Er6TmSe8]
_chemical_formula_sum '[Er24 Tm4 Se32]'
_cell_volume [1472.0576]
_cell_formula_units_Z [4]
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  24  0.0000  0.2500  0.2500  1.0
  Tm  Tm1  4  0.0000  0.0000  0.0000  1.0
  Se  Se2  24  0.0000  0.0000  0.2526  1.0
  Se  Se3  8  0.2500  0.2500  0.2500  1.0
]