data_[Dy8Nb4Si4N20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Dy  1.2200  1.7500  1.1310
  Nb  1.6000  1.4500  0.8200
  Si  1.9000  1.1000  0.5400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.1447]
_cell_length_b [14.4677]
_cell_length_c [9.6355]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Dy2NbSiN5]
_chemical_formula_sum '[Dy8 Nb4 Si4 N20]'
_cell_volume [438.3828]
_cell_formula_units_Z [4]
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
[
  Dy  Dy0  4  0.0000  0.1084  0.6870  1.0
  Dy  Dy1  4  0.0000  0.1165  0.3047  1.0
  Nb  Nb2  4  0.0000  0.2197  0.0187  1.0
  Si  Si3  4  0.0000  0.4474  0.4488  1.0
  N  N4  4  0.0000  0.0411  0.0365  1.0
  N  N5  4  0.0000  0.2913  0.6614  1.0
  N  N6  4  0.0000  0.3286  0.3795  1.0
  N  N7  4  0.0000  0.3511  0.0001  1.0
  N  N8  4  0.0000  0.4997  0.2875  1.0
]