data_[Na4Ca2Zn2Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ca  1.0000  1.8000  1.1400
  Zn  1.6500  1.3500  0.8800
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.6331]
_cell_length_b [8.9559]
_cell_length_c [7.7869]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Na2CaZnSb2]
_chemical_formula_sum '[Na4 Ca2 Zn2 Sb4]'
_cell_volume [323.1038]
_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  0.0000  0.1598  0.8481  1
  Na  Na1  2  0.5000  0.0850  0.5273  1
  Ca  Ca2  2  0.0000  0.4547  0.4991  1
  Zn  Zn3  2  0.5000  0.3221  0.1476  1
  Sb  Sb4  2  0.0000  0.1759  0.2438  1
  Sb  Sb5  2  0.5000  0.3801  0.7798  1
]