data_[Tb2Gd2Si4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  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 [6.9823]
_cell_length_b [9.1545]
_cell_length_c [4.7920]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.7148]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [TbGdSi2O7]
_chemical_formula_sum '[Tb2 Gd2 Si4 O14]'
_cell_volume [299.9164]
_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
[
  Tb  Tb0  2  0.0000  0.6955  0.5000  1.0
  Gd  Gd1  2  0.0000  0.3090  0.5000  1.0
  Si  Si2  4  0.2166  0.0038  0.9123  1.0
  O  O3  4  0.1217  0.5031  0.7873  1.0
  O  O4  4  0.2311  0.8551  0.7238  1.0
  O  O5  4  0.2385  0.1505  0.7217  1.0
  O  O6  2  0.0000  0.0099  0.0000  1.0
]