data_[Sm12Er8Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [17.2599]
_cell_length_b [6.8108]
_cell_length_c [6.4570]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.3168]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sm3Er2Tl]
_chemical_formula_sum '[Sm12 Er8 Tl4]'
_cell_volume [749.0328]
_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
[
  Sm  Sm0  8  0.1688  0.1175  0.0406  1
  Sm  Sm1  4  0.0000  0.2260  0.2500  1
  Er  Er2  8  0.1624  0.3912  0.5713  1
  Tl  Tl3  4  0.0000  0.2845  0.7500  1
]