data_[Er12Sn2Sb4Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Sn  1.9600  1.4500  0.8300
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.2835]
_cell_length_b [4.2180]
_cell_length_c [8.4096]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.7328]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er6SnSb2Se3]
_chemical_formula_sum '[Er12 Sn2 Sb4 Se6]'
_cell_volume [632.5912]
_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  0.0025  0.0000  0.7489  1.0
  Er  Er1  4  0.1648  0.5000  0.5888  1.0
  Er  Er2  4  0.1669  0.5000  0.0763  1.0
  Sn  Sn3  2  0.0000  0.5000  0.0000  1.0
  Sb  Sb4  4  0.1667  0.0000  0.3339  1.0
  Se  Se5  4  0.1680  0.0000  0.8328  1.0
  Se  Se6  2  0.0000  0.5000  0.5000  1.0
]