data_[Er8Nb4Ge4N20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Nb  1.6000  1.4500  0.8200
  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 [3.1699]
_cell_length_b [13.6747]
_cell_length_c [10.0522]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Er2NbGeN5]
_chemical_formula_sum '[Er8 Nb4 Ge4 N20]'
_cell_volume [435.7319]
_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
[
  Er  Er0  4  0.0000  0.1178  0.7110  1
  Er  Er1  4  0.0000  0.1286  0.2778  1
  Nb  Nb2  4  0.0000  0.2261  0.0034  1
  Ge  Ge3  4  0.0000  0.4900  0.4737  1
  N  N4  4  0.0000  0.0574  0.0499  1
  N  N5  4  0.0000  0.2865  0.6445  1
  N  N6  4  0.0000  0.2976  0.3644  1
  N  N7  4  0.0000  0.3713  0.0099  1
  N  N8  4  0.0000  0.4995  0.2893  1
]