data_[Si2P4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [4.3452]
_cell_length_b [7.2353]
_cell_length_c [6.3556]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.6872]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [SiP2O7]
_chemical_formula_sum '[Si2 P4 O14]'
_cell_volume [194.1365]
_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
[
  Si  Si0  2  0.5000  0.0000  0.0000  1.0
  P  P1  4  0.1125  0.6115  0.8167  1.0
  O  O2  4  0.1903  0.1425  0.8604  1.0
  O  O3  4  0.2637  0.7080  0.4085  1.0
  O  O4  4  0.3498  0.0106  0.2369  1.0
  O  O5  2  0.0000  0.0000  0.5000  1.0
]