data_[Zr8Al4Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zr  1.3300  1.5500  0.8600
  Al  1.6100  1.2500  0.6750
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.2748]
_cell_length_b [3.9326]
_cell_length_c [9.5284]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.3193]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Zr2AlSi2]
_chemical_formula_sum '[Zr8 Al4 Si8]'
_cell_volume [348.0289]
_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  0.0134  0.0000  0.6787  1.0
  Zr  Zr1  4  0.1897  0.0000  0.1067  1.0
  Al  Al2  4  0.2089  0.5000  0.3381  1.0
  Si  Si3  4  0.0348  0.5000  0.8952  1.0
  Si  Si4  4  0.1298  0.5000  0.5609  1.0
]