data_[Li1Mg1Tl1Ag1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.4248]
_cell_length_b [3.4248]
_cell_length_c [6.7858]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [LiMgTlAg]
_chemical_formula_sum '[Li1 Mg1 Tl1 Ag1]'
_cell_volume [79.5945]
_cell_formula_units_Z [1]
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
[
  Li  Li0  1  0.0000  0.0000  0.3763  1.0
  Mg  Mg1  1  0.0000  0.0000  0.8287  1.0
  Tl  Tl2  1  0.5000  0.5000  0.1305  1.0
  Ag  Ag3  1  0.5000  0.5000  0.5925  1.0
]