data_[Li4Nd2Nb4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Nd  1.1400  1.8500  1.2765
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.9909]
_cell_length_b [18.5824]
_cell_length_c [4.0117]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Li2NdNb2O7]
_chemical_formula_sum '[Li4 Nd2 Nb4 O14]'
_cell_volume [297.5064]
_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  0.2484  0.4944  1.0
  Nd  Nd1  2  0.0000  0.5000  0.0467  1.0
  Nb  Nb2  4  0.0000  0.1136  0.0051  1.0
  O  O3  4  0.0000  0.0960  0.4975  1.0
  O  O4  4  0.0000  0.2163  0.9917  1.0
  O  O5  4  0.0000  0.4060  0.5051  1.0
  O  O6  2  0.0000  0.0000  0.9673  1.0
]