data_[Cs2Y2Si2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Y  1.2200  1.8000  1.0400
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.6357]
_cell_length_b [5.8114]
_cell_length_c [8.0845]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2067]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsYSiO4]
_chemical_formula_sum '[Cs2 Y2 Si2 O8]'
_cell_volume [251.5212]
_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
[
  Cs  Cs0  2  0.3022  0.2500  0.0706  1.0
  Y  Y1  2  0.2154  0.2500  0.5381  1.0
  Si  Si2  2  0.2426  0.7500  0.3532  1.0
  O  O3  4  0.0478  0.5288  0.3346  1.0
  O  O4  2  0.4172  0.7500  0.2250  1.0
  O  O5  2  0.4405  0.7500  0.5527  1.0
]