data_[Na2Sr2P4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [7.1319]
_cell_length_b [9.3889]
_cell_length_c [4.8720]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.9698]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [NaSrP2O7]
_chemical_formula_sum '[Na2 Sr2 P4 O14]'
_cell_volume [322.2453]
_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  0.2699  0.0000  1.0
  Sr  Sr1  2  0.0000  0.6545  0.0000  1.0
  P  P2  4  0.2082  0.9561  0.4204  1.0
  O  O3  4  0.1563  0.4641  0.3060  1.0
  O  O4  4  0.2069  0.0948  0.2533  1.0
  O  O5  4  0.2409  0.8274  0.2400  1.0
  O  O6  2  0.0000  0.9241  0.5000  1.0
]