data_[Be4Ge2C2N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Ge  2.0100  1.2500  0.7700
  C  2.5500  0.7000  0.3000
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [3.9642]
_cell_length_b [3.9642]
_cell_length_c [7.7272]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [Be2GeCN4]
_chemical_formula_sum '[Be4 Ge2 C2 N8]'
_cell_volume [121.4346]
_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
[
  Be  Be0  2  0.0000  0.0000  0.5000  1
  Be  Be1  2  0.0000  0.5000  0.7500  1
  Ge  Ge2  2  0.0000  0.5000  0.2500  1
  C  C3  2  0.0000  0.0000  0.0000  1
  N  N4  8  0.2062  0.7669  0.8891  1
]