data_[Zr2Cu8Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zr  1.3300  1.5500  0.8600
  Cu  1.9000  1.3500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P4_2/mnm]
_cell_length_a [7.1175]
_cell_length_b [7.1175]
_cell_length_c [3.8051]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [136]
_chemical_formula_structural [Zr(Cu2Si)2]
_chemical_formula_sum '[Zr2 Cu8 Si4]'
_cell_volume [192.7579]
_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
[
  Zr  Zr0  2  0.0000  0.0000  0.5000  1
  Cu  Cu1  8  0.0919  0.3424  0.0000  1
  Si  Si2  4  0.2150  0.7850  0.0000  1
]