data_[Nd4Si4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.1594]
_cell_length_b [9.3979]
_cell_length_c [4.8230]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.1810]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Nd2Si2O7]
_chemical_formula_sum '[Nd4 Si4 O14]'
_cell_volume [318.3479]
_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
[
  Nd  Nd0  4  0.0000  0.3054  0.0000  1.0
  Si  Si1  4  0.2140  0.0000  0.4148  1.0
  O  O2  8  0.2343  0.1441  0.2276  1.0
  O  O3  4  0.1285  0.5000  0.2897  1.0
  O  O4  2  0.0000  0.0000  0.5000  1.0
]