data_[Tl2Ga2As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Ga  1.8100  1.3000  0.7600
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [17.5116]
_cell_length_b [3.6359]
_cell_length_c [12.1732]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [TlGaAs2]
_chemical_formula_sum '[Tl2 Ga2 As4]'
_cell_volume [775.0700]
_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
[
  Tl  Tl0  2  0.0000  0.0000  0.4902  1
  Ga  Ga1  2  0.0000  0.0000  0.7931  1
  As  As2  4  0.0717  0.0000  0.1764  1
]