data_[Rb2Nd2Si2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  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 [P2_1/m]
_cell_length_a [5.8089]
_cell_length_b [5.7470]
_cell_length_c [7.6974]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.8642]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbNdSiO4]
_chemical_formula_sum '[Rb2 Nd2 Si2 O8]'
_cell_volume [247.1792]
_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
[
  Rb  Rb0  2  0.3046  0.2500  0.0732  1
  Nd  Nd1  2  0.2240  0.2500  0.5478  1
  Si  Si2  2  0.2396  0.7500  0.3370  1
  O  O3  4  0.0548  0.5249  0.3162  1
  O  O4  2  0.4134  0.7500  0.5476  1
  O  O5  2  0.4174  0.7500  0.2048  1
]