data_[Eu4N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Eu  1.2000  1.8500  1.1985
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.8902]
_cell_length_b [31.0097]
_cell_length_c [17.9035]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [EuN]
_chemical_formula_sum '[Eu4 N4]'
_cell_volume [2159.7755]
_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
[
  Eu  Eu0  2  0.0000  0.0000  0.3454  1
  Eu  Eu1  2  0.5000  0.0000  0.5308  1
  N  N2  2  0.0000  0.0000  0.4631  1
  N  N3  2  0.5000  0.0000  0.6626  1
]