data_[Zn4Si2Ge2N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zn  1.6500  1.3500  0.8800
  Si  1.9000  1.1000  0.5400
  Ge  2.0100  1.2500  0.7700
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [4.5197]
_cell_length_b [4.5197]
_cell_length_c [8.5638]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [Zn2SiGeN4]
_chemical_formula_sum '[Zn4 Si2 Ge2 N8]'
_cell_volume [174.9366]
_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
[
  Zn  Zn0  2  0.0000  0.0000  0.5000  1
  Zn  Zn1  2  0.0000  0.5000  0.7500  1
  Si  Si2  2  0.0000  0.5000  0.2500  1
  Ge  Ge3  2  0.0000  0.0000  0.0000  1
  N  N4  8  0.2053  0.2611  0.1301  1
]