data_[Er8Si2Te2Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Si  1.9000  1.1000  0.5400
  Te  2.1000  1.4000  1.2933
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [5.8441]
_cell_length_b [5.8441]
_cell_length_c [11.7500]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [Er4SiTeSe2]
_chemical_formula_sum '[Er8 Si2 Te2 Se4]'
_cell_volume [401.3033]
_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  4  0.0000  0.0000  0.2418  1.0
  Er  Er1  4  0.0000  0.5000  0.5126  1.0
  Si  Si2  2  0.0000  0.5000  0.7500  1.0
  Te  Te3  2  0.0000  0.0000  0.5000  1.0
  Se  Se4  2  0.0000  0.0000  0.0000  1.0
  Se  Se5  2  0.0000  0.5000  0.2500  1.0
]