data_[K10Si4O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [21.1386]
_cell_length_b [3.2297]
_cell_length_c [9.4090]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.7487]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K5Si2O5]
_chemical_formula_sum '[K10 Si4 O10]'
_cell_volume [639.1290]
_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
[
  K  K0  4  0.1195  0.5000  0.9055  1
  K  K1  4  0.1882  0.5000  0.2983  1
  K  K2  2  0.0000  0.5000  0.5000  1
  Si  Si3  4  0.0431  0.0000  0.1584  1
  O  O4  4  0.0236  0.5000  0.2277  1
  O  O5  4  0.1174  0.0000  0.1345  1
  O  O6  2  0.0000  0.0000  0.0000  1
]