data_Si3Cl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.91
_cell_length_b   4.91
_cell_length_c   4.91
_cell_angle_alpha   104.42
_cell_angle_beta   104.42
_cell_angle_gamma   104.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si3Cl2
_chemical_formula_sum   'Si3 Cl2'
_cell_volume   104.45
_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
  Si  Si2  1  0.0  0.76  0.0  1.0
  Si  Si3  1  0.94  0.12  0.0  1.0
  Si  Si4  1  0.06  0.12  0.0  1.0
  Cl  Cl0  1  0.0  0.0  0.38  1.0
  Cl  Cl1  1  0.0  0.0  0.64  1.0

data_Si3Cl2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.91
_cell_length_b   4.91
_cell_length_c   4.91
_cell_angle_alpha   104.42
_cell_angle_beta   104.42
_cell_angle_gamma   104.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si3Cl2
_chemical_formula_sum   'Si3 Cl2'
_cell_volume   104.45
_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
  Si  Si0  1  0.0  0.76  0.0  1.0
  Si  Si1  1  0.06  0.12  0.0  1.0
  Si  Si2  1  0.94  0.12  0.0  1.0
  Cl  Cl3  1  0.0  0.0  0.38  1.0
  Cl  Cl4  1  0.0  0.0  0.64  1.0

Si Si Si Cl Cl