data_[Ta4Al2As2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Al  1.6100  1.2500  0.6750
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [3.9238]
_cell_length_b [3.9238]
_cell_length_c [8.7499]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [Ta2AlAs]
_chemical_formula_sum '[Ta4 Al2 As2]'
_cell_volume [134.7144]
_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
[
  Ta  Ta0  2  0.0000  0.0000  0.0000  1
  Ta  Ta1  2  0.0000  0.5000  0.7500  1
  Al  Al2  2  0.0000  0.0000  0.5000  1
  As  As3  2  0.0000  0.5000  0.2500  1
]