data_[Yb2Nb2Si4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Yb  1.1000  1.7500  1.0840
  Nb  1.6000  1.4500  0.8200
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [6.7914]
_cell_length_b [8.6818]
_cell_length_c [4.6911]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.5700]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [YbNbSi2O7]
_chemical_formula_sum '[Yb2 Nb2 Si4 O14]'
_cell_volume [271.9030]
_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
[
  Yb  Yb0  2  0.0000  0.2966  0.5000  1.0
  Nb  Nb1  2  0.0000  0.6823  0.5000  1.0
  Si  Si2  4  0.2157  0.0062  0.9170  1.0
  O  O3  4  0.1231  0.4973  0.7806  1.0
  O  O4  4  0.1966  0.8460  0.7312  1.0
  O  O5  4  0.2307  0.6493  0.2906  1.0
  O  O6  2  0.0000  0.0629  0.0000  1.0
]