data_[Mg4Si2Ge2N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  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 [Pmn2_1]
_cell_length_a [6.1876]
_cell_length_b [5.7517]
_cell_length_c [5.1332]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Mg2SiGeN4]
_chemical_formula_sum '[Mg4 Si2 Ge2 N8]'
_cell_volume [182.6873]
_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
[
  Mg  Mg0  4  0.2497  0.6692  0.9915  1.0
  Si  Si1  2  0.0000  0.1571  0.0007  1.0
  Ge  Ge2  2  0.0000  0.8499  0.5005  1.0
  N  N3  4  0.2389  0.3127  0.9049  1.0
  N  N4  2  0.0000  0.1395  0.3412  1.0
  N  N5  2  0.0000  0.8775  0.8648  1.0
]