data_[Li18Zn6Sn3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Zn  1.6500  1.3500  0.8800
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [7.8827]
_cell_length_b [7.8827]
_cell_length_c [8.1824]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Li6Zn2Sn]
_chemical_formula_sum '[Li18 Zn6 Sn3]'
_cell_volume [440.3104]
_cell_formula_units_Z [3]
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
[
  Li  Li0  18  0.0000  0.3328  0.5000  1
  Zn  Zn1  6  0.0000  0.0000  0.3455  1
  Sn  Sn2  3  0.0000  0.0000  0.0000  1
]