data_[Ge6N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ge  2.0100  1.2500  0.7700
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P6_3/m]
_cell_length_a [8.1204]
_cell_length_b [8.1204]
_cell_length_c [3.1101]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [176]
_chemical_formula_structural [Ge3N4]
_chemical_formula_sum '[Ge6 N8]'
_cell_volume [177.6049]
_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
[
  Ge  Ge0  6  0.1711  0.4063  0.7500  1.0
  N  N1  6  0.0277  0.3304  0.2500  1.0
  N  N2  2  0.3333  0.6667  0.7500  1.0
]