data_[Na4Ge4N6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ge  2.0100  1.2500  0.7700
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.6257]
_cell_length_b [3.1971]
_cell_length_c [5.8584]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.4820]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Ge2N3]
_chemical_formula_sum '[Na4 Ge4 N6]'
_cell_volume [194.9037]
_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
[
  Na  Na0  4  0.1113  0.5000  0.8260  1
  Ge  Ge1  4  0.1515  0.0000  0.3034  1
  N  N2  4  0.2483  0.0000  0.6928  1
  N  N3  2  0.0000  0.0000  0.0000  1
]