data_[Er2Tm4Sb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.3461]
_cell_length_b [6.1415]
_cell_length_c [13.0401]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [ErTm2Sb3]
_chemical_formula_sum '[Er2 Tm4 Sb6]'
_cell_volume [348.0570]
_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  0.0000  0.5000  1.0
  Tm  Tm1  4  0.0000  0.0000  0.1664  1.0
  Sb  Sb2  4  0.0000  0.5000  0.1673  1.0
  Sb  Sb3  2  0.0000  0.5000  0.5000  1.0
]