data_[Er2Tm10Tl12]
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
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.8418]
_cell_length_b [11.1120]
_cell_length_c [6.3682]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.8734]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [ErTm5Tl6]
_chemical_formula_sum '[Er2 Tm10 Tl12]'
_cell_volume [678.9340]
_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  0.0000  1
  Tm  Tm1  4  0.0000  0.1667  0.5000  1
  Tm  Tm2  4  0.0000  0.3337  0.0000  1
  Tm  Tm3  2  0.0000  0.5000  0.5000  1
  Tl  Tl4  8  0.2497  0.3330  0.7494  1
  Tl  Tl5  4  0.2498  0.5000  0.2510  1
]