data_[Li4Ta2Nb4Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Ta  1.5000  1.4500  0.8200
  Nb  1.6000  1.4500  0.8200
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.1095]
_cell_length_b [10.8822]
_cell_length_c [7.0908]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.7091]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Li2Ta(NbSe3)2]
_chemical_formula_sum '[Li4 Ta2 Nb4 Se12]'
_cell_volume [455.9867]
_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  4  0.0000  0.1788  0.0000  1.0
  Ta  Ta1  2  0.0000  0.0000  0.5000  1.0
  Nb  Nb2  4  0.0000  0.3671  0.5000  1.0
  Se  Se3  8  0.2300  0.1715  0.7267  1.0
  Se  Se4  4  0.2444  0.0000  0.2345  1.0
]