data_[Na2Zn8Cu2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Zn  1.6500  1.3500  0.8800
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Pmma]
_cell_length_a [7.9039]
_cell_length_b [3.8282]
_cell_length_c [6.7964]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [51]
_chemical_formula_structural [NaZn4Cu]
_chemical_formula_sum '[Na2 Zn8 Cu2]'
_cell_volume [205.6448]
_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
[
  Na  Na0  2  0.2500  0.0000  0.3860  1.0
  Zn  Zn1  4  0.0497  0.5000  0.6928  1.0
  Zn  Zn2  2  0.0000  0.0000  0.0000  1.0
  Zn  Zn3  2  0.2500  0.5000  0.0520  1.0
  Cu  Cu4  2  0.2500  0.0000  0.7967  1.0
]