data_[Li2Cu2Si4O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Cu  1.9000  1.3500  0.8200
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1]
_cell_length_a [5.8056]
_cell_length_b [4.9699]
_cell_length_c [8.0440]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.3903]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [LiCuSi2O5]
_chemical_formula_sum '[Li2 Cu2 Si4 O10]'
_cell_volume [220.2417]
_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
[
  Li  Li0  2  0.0592  0.3159  0.8120  1.0
  Cu  Cu1  2  0.0041  0.7703  0.6263  1.0
  Si  Si2  2  0.3535  0.8168  0.0131  1.0
  Si  Si3  2  0.4549  0.3377  0.5980  1.0
  O  O4  2  0.1121  0.7085  0.8696  1.0
  O  O5  2  0.1887  0.2721  0.6139  1.0
  O  O6  2  0.3257  0.7912  0.2110  1.0
  O  O7  2  0.4022  0.1398  0.9837  1.0
  O  O8  2  0.4683  0.6542  0.5445  1.0
]