data_[Yb8Cu4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Yb  1.1000  1.7500  1.0840
  Cu  1.9000  1.3500  0.8200
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.4588]
_cell_length_b [4.9204]
_cell_length_c [6.5720]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.3989]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Yb2CuN2]
_chemical_formula_sum '[Yb8 Cu4 N8]'
_cell_volume [291.7097]
_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
[
  Yb  Yb0  4  0.0420  0.0000  0.2695  1
  Yb  Yb1  4  0.1758  0.5000  0.0881  1
  Cu  Cu2  4  0.1403  0.5000  0.6184  1
  N  N3  4  0.0257  0.5000  0.2926  1
  N  N4  4  0.1776  0.0000  0.0873  1
]