data_[Y8Mg12Tl16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [6.5098]
_cell_length_b [16.6972]
_cell_length_c [8.4855]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Y2Mg3Tl4]
_chemical_formula_sum '[Y8 Mg12 Tl16]'
_cell_volume [922.3371]
_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  8  0.0000  0.1055  0.4093  1
  Mg  Mg1  8  0.2500  0.2256  0.7500  1
  Mg  Mg2  4  0.0000  0.0000  0.0000  1
  Tl  Tl3  8  0.0000  0.1768  0.0350  1
  Tl  Tl4  8  0.2500  0.0515  0.7500  1
]