data_Na2Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.31
_cell_length_b   5.31
_cell_length_c   6.57
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Zn
_chemical_formula_sum   'Na4 Zn2'
_cell_volume   160.4
_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  1  0.0  0.0  0.0  1.0
  Na  Na1  1  0.0  0.0  0.28  1.0
  Na  Na2  1  0.66  0.53  0.93  1.0
  Na  Na3  1  0.0  0.07  0.64  1.0
  Zn  Zn4  1  0.66  0.53  0.64  1.0
  Zn  Zn5  1  0.0  0.07  0.93  1.0

data_Na2Zn
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.31
_cell_length_b   5.31
_cell_length_c   6.57
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Zn
_chemical_formula_sum   'Na4 Zn2'
_cell_volume   160.4
_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  1  0.0  0.0  0.0  1.0
  Na  Na1  1  0.0  0.0  0.28  1.0
  Na  Na2  1  0.0  0.07  0.64  1.0
  Na  Na3  1  0.66  0.53  0.93  1.0
  Zn  Zn4  1  0.0  0.07  0.93  1.0
  Zn  Zn5  1  0.66  0.53  0.64  1.0

Na Na Na Na Zn Zn
Na Na Na Na Zn Zn 0 5 o o - 0 1 o o o 2 4 o o o 3 5 o o o 