data_[Na4Be4N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [4.9611]
_cell_length_b [5.6845]
_cell_length_c [5.6719]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.5389]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [NaBeN]
_chemical_formula_sum '[Na4 Be4 N4]'
_cell_volume [133.3263]
_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
[
  Na  Na0  4  0.3511  0.0056  0.6706  1.0
  Be  Be1  4  0.0059  0.6307  0.3727  1.0
  N  N2  4  0.0129  0.6635  0.6717  1.0
]