data_[Na4Ta4Zn4O16]
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
  Zn  1.6500  1.3500  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [6.1561]
_cell_length_b [6.2069]
_cell_length_c [9.6497]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [NaTaZnO4]
_chemical_formula_sum '[Na4 Ta4 Zn4 O16]'
_cell_volume [368.7185]
_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  0.2500  0.8506  1
  Ta  Ta1  4  0.0000  0.0000  0.5000  1
  Zn  Zn2  4  0.2500  0.2500  0.2500  1
  O  O3  8  0.0000  0.0331  0.2941  1
  O  O4  8  0.2125  0.2500  0.5057  1
]