data_[Gd1Er1Fe2Cl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Gd  1.2000  1.8000  1.0750
  Er  1.2400  1.7500  1.0300
  Fe  1.8300  1.4000  0.8525
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P3m1]
_cell_length_a [3.8044]
_cell_length_b [3.8044]
_cell_length_c [11.0447]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [GdEr(FeCl)2]
_chemical_formula_sum '[Gd1 Er1 Fe2 Cl2]'
_cell_volume [138.4350]
_cell_formula_units_Z [1]
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
[
  Gd  Gd0  1  0.0000  0.0000  0.3191  1
  Er  Er1  1  0.0000  0.0000  0.6808  1
  Fe  Fe2  1  0.3333  0.6667  0.5117  1
  Fe  Fe3  1  0.6667  0.3333  0.4935  1
  Cl  Cl4  1  0.3333  0.6667  0.1592  1
  Cl  Cl5  1  0.6667  0.3333  0.8357  1
]