data_[Li8Si8O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ccc2]
_cell_length_a [5.8901]
_cell_length_b [14.7898]
_cell_length_c [4.8432]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [37]
_chemical_formula_structural [Li2Si2O5]
_chemical_formula_sum '[Li8 Si8 O20]'
_cell_volume [421.9094]
_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
[
  Li  Li0  8  0.1528  0.4421  0.0968  1.0
  Si  Si1  8  0.1555  0.1481  0.5932  1.0
  O  O2  8  0.0919  0.1376  0.9269  1.0
  O  O3  8  0.1692  0.4283  0.5011  1.0
  O  O4  4  0.2500  0.2500  0.5369  1.0
]