data_[Li4Zr2Nb4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Zr  1.3300  1.5500  0.8600
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [5.4080]
_cell_length_b [18.8129]
_cell_length_c [3.8885]
_cell_angle_alpha [90.0000]
_cell_angle_beta [131.1312]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Li2ZrNb2O7]
_chemical_formula_sum '[Li4 Zr2 Nb4 O14]'
_cell_volume [297.9811]
_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  0.0006  0.2381  0.5257  1
  Zr  Zr1  2  0.4280  0.5000  0.6835  1
  Nb  Nb2  4  0.4963  0.1159  0.9998  1
  O  O3  4  0.0007  0.2830  0.0244  1
  O  O4  4  0.0102  0.1100  0.5318  1
  O  O5  4  0.0562  0.4082  0.5723  1
  O  O6  2  0.4446  0.0000  0.0093  1
]