data_[Er2Te2Br2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Te  2.1000  1.4000  1.2933
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [4.2001]
_cell_length_b [6.0818]
_cell_length_c [21.1165]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [ErTeBr]
_chemical_formula_sum '[Er2 Te2 Br2]'
_cell_volume [539.3982]
_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  2  0.0000  0.5000  0.4433  1
  Te  Te1  2  0.0000  0.0000  0.4506  1
  Br  Br2  2  0.0000  0.0000  0.6448  1
]