data_[Sr4N4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.7863]
_cell_length_b [8.2887]
_cell_length_c [3.8217]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.4446]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2N2O7]
_chemical_formula_sum '[Sr4 N4 O14]'
_cell_volume [301.5008]
_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
[
  Sr  Sr0  4  0.0000  0.1978  0.0000  1.0
  N  N1  4  0.1793  0.5000  0.5940  1.0
  O  O2  8  0.2202  0.3671  0.7437  1.0
  O  O3  4  0.0921  0.5000  0.2917  1.0
  O  O4  2  0.0000  0.0000  0.5000  1.0
]