data_[Sr6Zn8Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Zn  1.6500  1.3500  0.8800
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.2744]
_cell_length_b [4.5286]
_cell_length_c [25.1090]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Sr3(ZnSi)4]
_chemical_formula_sum '[Sr6 Zn8 Si8]'
_cell_volume [486.0440]
_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
[
  Sr  Sr0  4  0.0000  0.0000  0.1490  1.0
  Sr  Sr1  2  0.0000  0.5000  0.5000  1.0
  Zn  Zn2  4  0.0000  0.0000  0.4045  1.0
  Zn  Zn3  4  0.0000  0.5000  0.2499  1.0
  Si  Si4  4  0.0000  0.0000  0.3062  1.0
  Si  Si5  4  0.0000  0.5000  0.0481  1.0
]