data_[Na4Ti4Si8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ti  1.5400  1.4000  0.8517
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.9339]
_cell_length_b [8.8353]
_cell_length_c [5.3124]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.1703]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaTi(SiO3)2]
_chemical_formula_sum '[Na4 Ti4 Si8 O24]'
_cell_volume [447.8202]
_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
[
  Na  Na0  4  0.0000  0.3050  0.2500  1.0
  Ti  Ti1  4  0.0000  0.0885  0.7500  1.0
  Si  Si2  8  0.2074  0.4069  0.7590  1.0
  O  O3  8  0.1198  0.0861  0.1506  1.0
  O  O4  8  0.1351  0.2435  0.6913  1.0
  O  O5  8  0.1496  0.4913  0.9866  1.0
]