data_[Na4Ge8N12]
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 [Cmc2_1]
_cell_length_a [9.9562]
_cell_length_b [5.8452]
_cell_length_c [5.1865]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaGe2N3]
_chemical_formula_sum '[Na4 Ge8 N12]'
_cell_volume [301.8352]
_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  0.0000  0.3387  0.9953  1.0
  Ge  Ge1  8  0.1679  0.1562  0.5245  1.0
  N  N2  8  0.2087  0.1326  0.8797  1.0
  N  N3  4  0.0000  0.2580  0.4543  1.0
]