data_[Mg2Ta4Tl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ta  1.5000  1.4500  0.8200
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.3547]
_cell_length_b [5.0000]
_cell_length_c [9.5920]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [MgTa2Tl]
_chemical_formula_sum '[Mg2 Ta4 Tl2]'
_cell_volume [160.8902]
_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
[
  Mg  Mg0  2  0.0000  0.5000  0.2524  1
  Ta  Ta1  2  0.0000  0.0000  0.0160  1
  Ta  Ta2  2  0.0000  0.5000  0.7347  1
  Tl  Tl3  2  0.0000  0.0000  0.4970  1
]