data_[Y4Er4Tm8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.6999]
_cell_length_b [3.5112]
_cell_length_c [12.1870]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.1794]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [YErTm2]
_chemical_formula_sum '[Y4 Er4 Tm8]'
_cell_volume [492.7744]
_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
[
  Y  Y0  4  0.1253  0.0000  0.6879  1.0
  Er  Er1  4  0.1240  0.0000  0.1864  1.0
  Tm  Tm2  4  0.1253  0.5000  0.9385  1.0
  Tm  Tm3  4  0.1254  0.5000  0.4369  1.0
]