data_[Na4Ta4Ge4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ta  1.5000  1.4500  0.8200
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.0180]
_cell_length_b [8.9912]
_cell_length_c [7.5178]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.3572]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaTaGeO5]
_chemical_formula_sum '[Na4 Ta4 Ge4 O20]'
_cell_volume [428.6737]
_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
[
  Na  Na0  4  0.0000  0.3241  0.2500  1.0
  Ta  Ta1  4  0.0000  0.0000  0.0000  1.0
  Ge  Ge2  4  0.0000  0.3199  0.7500  1.0
  O  O3  8  0.0892  0.2082  0.6064  1.0
  O  O4  8  0.1974  0.4428  0.9050  1.0
  O  O5  4  0.0000  0.0634  0.2500  1.0
]