data_[Y4Er8Tm4]
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 [Pnma]
_cell_length_a [6.1121]
_cell_length_b [11.3943]
_cell_length_c [7.0749]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [YEr2Tm]
_chemical_formula_sum '[Y4 Er8 Tm4]'
_cell_volume [492.7229]
_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  0.0828  0.2500  0.3756  1
  Er  Er1  8  0.2479  0.5009  0.1249  1
  Tm  Tm2  4  0.0843  0.2500  0.8742  1
]