data_[Sr2Gd2Si4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Gd  1.2000  1.8000  1.0750
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [7.1990]
_cell_length_b [9.4846]
_cell_length_c [4.8462]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.7972]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [SrGdSi2O7]
_chemical_formula_sum '[Sr2 Gd2 Si4 O14]'
_cell_volume [325.0382]
_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  2  0.0000  0.3012  0.5000  1.0
  Gd  Gd1  2  0.0000  0.6906  0.5000  1.0
  Si  Si2  4  0.2078  0.0054  0.9108  1.0
  O  O3  4  0.1366  0.5055  0.7959  1.0
  O  O4  4  0.2017  0.8558  0.7418  1.0
  O  O5  4  0.2486  0.6366  0.2873  1.0
  O  O6  2  0.0000  0.0412  0.0000  1.0
]