data_[Ce4Er8Tm20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.4711]
_cell_length_b [11.5836]
_cell_length_c [15.5153]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [CeEr2Tm5]
_chemical_formula_sum '[Ce4 Er8 Tm20]'
_cell_volume [983.2753]
_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
[
  Ce  Ce0  4  0.0000  0.2690  0.2500  1
  Er  Er1  8  0.0000  0.2202  0.6310  1
  Tm  Tm2  8  0.0000  0.0800  0.0909  1
  Tm  Tm3  8  0.0000  0.3806  0.0511  1
  Tm  Tm4  4  0.0000  0.4629  0.7500  1
]