data_Zn4Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.13
_cell_length_b   5.13
_cell_length_c   4.93
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn4Si3
_chemical_formula_sum   'Zn4 Si3'
_cell_volume   112.37
_cell_formula_units_Z   1
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
  Zn  Zn3  1  0.0  0.0  0.74  1.0
  Zn  Zn4  1  0.0  0.0  0.19  1.0
  Zn  Zn5  1  0.0  0.96  0.0  1.0
  Zn  Zn6  1  0.57  0.48  0.0  1.0
  Si  Si0  1  0.28  0.22  0.47  1.0
  Si  Si1  1  0.57  0.0  0.47  1.0
  Si  Si2  1  0.72  0.22  0.47  1.0

data_Zn4Si3
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.93
_cell_length_b   5.13
_cell_length_c   5.13
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn4Si3
_chemical_formula_sum   'Zn4 Si3'
_cell_volume   112.37
_cell_formula_units_Z   1
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
  Zn  Zn0  1  -0.0  0.57  0.48  1.0
  Zn  Zn1  1  0.0  0.0  0.96  1.0
  Zn  Zn2  1  0.19  0.0  0.0  1.0
  Zn  Zn3  1  0.74  0.0  0.0  1.0
  Si  Si4  1  0.47  0.28  0.22  1.0
  Si  Si5  1  0.47  0.57  0.0  1.0
  Si  Si6  1  0.47  0.72  0.22  1.0

Zn Zn Zn Zn Si Si Si