data_[Na6Er4Te2S12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  Te  2.1000  1.4000  1.2933
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.8510]
_cell_length_b [12.2070]
_cell_length_c [7.0178]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.5678]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Er2TeS6]
_chemical_formula_sum '[Na6 Er4 Te2 S12]'
_cell_volume [556.3498]
_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
[
  Na  Na0  4  0.0000  0.1604  0.5000  1
  Na  Na1  2  0.0000  0.5000  0.5000  1
  Er  Er2  4  0.0000  0.3301  0.0000  1
  Te  Te3  2  0.0000  0.0000  0.0000  1
  S  S4  8  0.2488  0.6751  0.7672  1
  S  S5  4  0.2403  0.5000  0.2164  1
]