data_[Tb6Er2As8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.2508]
_cell_length_b [11.6474]
_cell_length_c [4.1277]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Tb3ErAs4]
_chemical_formula_sum '[Tb6 Er2 As8]'
_cell_volume [396.6763]
_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
[
  Tb  Tb0  4  0.2500  0.2500  0.0000  1.0
  Tb  Tb1  2  0.0000  0.5000  0.5000  1.0
  Er  Er2  2  0.0000  0.0000  0.5000  1.0
  As  As3  4  0.0000  0.2489  0.5000  1.0
  As  As4  4  0.2476  0.0000  0.0000  1.0
]