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 [5.7781]
_cell_length_b [4.9714]
_cell_length_c [8.0387]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2119]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [LiCuSi2O5]
_chemical_formula_sum '[Li2 Cu2 Si4 O10]'
_cell_volume [219.3459]
_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  0.0584  0.3205  0.8123  1
  Cu  Cu1  2  0.0071  0.7745  0.6260  1
  Si  Si2  2  0.3528  0.8173  0.0128  1
  Si  Si3  2  0.4542  0.3341  0.5983  1
  O  O4  2  0.1111  0.7102  0.8697  1
  O  O5  2  0.1871  0.2697  0.6148  1
  O  O6  2  0.3252  0.7876  0.2112  1
  O  O7  2  0.4017  0.1414  0.9856  1
  O  O8  2  0.4690  0.6508  0.5450  1
]