data_[Pr2Er6S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [7.9612]
_cell_length_b [11.1128]
_cell_length_c [3.8747]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [PrEr3S4]
_chemical_formula_sum '[Pr2 Er6 S8]'
_cell_volume [342.7972]
_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
[
  Pr  Pr0  2  0.0000  0.0000  0.5000  1
  Er  Er1  4  0.2500  0.2500  0.0000  1
  Er  Er2  2  0.0000  0.5000  0.5000  1
  S  S3  4  0.0000  0.2572  0.5000  1
  S  S4  4  0.2352  0.5000  0.0000  1
]