data_[Zr4Ta8Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zr  1.3300  1.5500  0.8600
  Ta  1.5000  1.4500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [I-42d]
_cell_length_a [7.7469]
_cell_length_b [7.7469]
_cell_length_c [5.2619]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [122]
_chemical_formula_structural [ZrTa2Si]
_chemical_formula_sum '[Zr4 Ta8 Si4]'
_cell_volume [315.7920]
_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
[
  Zr  Zr0  4  0.0000  0.0000  0.0000  1
  Ta  Ta1  8  0.1956  0.7500  0.6250  1
  Si  Si2  4  0.0000  0.0000  0.5000  1
]