data_[Li2Nb4P4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Nb  1.6000  1.4500  0.8200
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.5586]
_cell_length_b [9.2434]
_cell_length_c [4.1471]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.1887]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [LiNb2(PO5)2]
_chemical_formula_sum '[Li2 Nb4 P4 O20]'
_cell_volume [366.1513]
_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  0.0000  0.0000  0.0000  1.0
  Nb  Nb1  4  0.2370  0.5000  0.2425  1.0
  P  P2  4  0.0000  0.2463  0.5000  1.0
  O  O3  8  0.0937  0.1479  0.7189  1.0
  O  O4  8  0.0939  0.3418  0.2950  1.0
  O  O5  4  0.2482  0.0000  0.1944  1.0
]