data_[Ta4Be2Si2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Be  1.5700  1.0500  0.5900
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.4944]
_cell_length_b [3.4717]
_cell_length_c [9.3365]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Ta2BeSi]
_chemical_formula_sum '[Ta4 Be2 Si2]'
_cell_volume [113.2669]
_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  0.0949  1.0
  Ta  Ta1  2  0.5000  0.0000  0.3987  1.0
  Be  Be2  2  0.0000  0.0000  0.8243  1.0
  Si  Si3  2  0.5000  0.0000  0.6826  1.0
]