data_[Er8Tm4Sb8]
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 [Cmcm]
_cell_length_a [4.2630]
_cell_length_b [21.4913]
_cell_length_c [6.2290]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Er2TmSb2]
_chemical_formula_sum '[Er8 Tm4 Sb8]'
_cell_volume [570.6906]
_cell_formula_units_Z [4]
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  4  0.0000  0.0000  0.0000  1
  Er  Er1  4  0.0000  0.1904  0.2500  1
  Tm  Tm2  4  0.0000  0.3865  0.2500  1
  Sb  Sb3  4  0.0000  0.2091  0.7500  1
  Sb  Sb4  4  0.0000  0.4178  0.7500  1
]