data_[Er2Np2Ge4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Np  1.3600  1.7500  1.0000
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [7.0042]
_cell_length_b [7.0042]
_cell_length_c [6.4488]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [ErNp(GeO4)2]
_chemical_formula_sum '[Er2 Np2 Ge4 O16]'
_cell_volume [316.3702]
_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
[
  Er  Er0  2  0.0000  0.5000  0.7500  1
  Np  Np1  2  0.0000  0.0000  0.0000  1
  Ge  Ge2  2  0.0000  0.0000  0.5000  1
  Ge  Ge3  2  0.0000  0.5000  0.2500  1
  O  O4  8  0.0000  0.1835  0.6884  1
  O  O5  8  0.0000  0.3108  0.0672  1
]