data_[Na2Al2P4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Al  1.6100  1.2500  0.6750
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [6.5942]
_cell_length_b [8.0847]
_cell_length_c [4.4581]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.1099]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [NaAlP2O7]
_chemical_formula_sum '[Na2 Al2 P4 O14]'
_cell_volume [233.2183]
_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
[
  Na  Na0  2  0.0000  0.2419  0.5000  1.0
  Al  Al1  2  0.0000  0.6272  0.5000  1.0
  P  P2  4  0.2090  0.9635  0.9133  1.0
  O  O3  4  0.1373  0.4541  0.7839  1.0
  O  O4  4  0.1532  0.7978  0.7549  1.0
  O  O5  4  0.2261  0.5946  0.2993  1.0
  O  O6  2  0.0000  0.0442  0.0000  1.0
]