data_[Zn4Cu20Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zn  1.6500  1.3500  0.8800
  Cu  1.9000  1.3500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.3609]
_cell_length_b [6.9211]
_cell_length_c [8.5407]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.8515]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [ZnCu5Si]
_chemical_formula_sum '[Zn4 Cu20 Si4]'
_cell_volume [351.3753]
_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
[
  Zn  Zn0  4  0.0000  0.4961  0.2500  1.0
  Cu  Cu1  8  0.1065  0.3365  0.5374  1.0
  Cu  Cu2  8  0.2037  0.1812  0.8467  1.0
  Si  Si3  4  0.0000  0.0000  0.0000  1.0
  Cu  Cu4  4  0.0000  0.1424  0.2500  1.0
]