data_[Nd2Ag2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [6.0398]
_cell_length_b [8.6550]
_cell_length_c [18.8041]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [NdAgSe3]
_chemical_formula_sum '[Nd2 Ag2 Se6]'
_cell_volume [982.9745]
_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  2  0.0000  0.8173  0.5000  1
  Ag  Ag1  2  0.0000  0.1786  0.5000  1
  Se  Se2  4  0.1890  0.0252  0.6011  1
  Se  Se3  2  0.0000  0.4774  0.5000  1
]