data_Si2Cl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.26
_cell_length_b   7.26
_cell_length_c   6.32
_cell_angle_alpha   95.24
_cell_angle_beta   95.24
_cell_angle_gamma   23.2
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2Cl
_chemical_formula_sum   'Si4 Cl2'
_cell_volume   130.63
_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
  Si  Si2  1  0.76  0.0  0.26  1.0
  Si  Si3  1  0.71  0.0  0.21  1.0
  Si  Si4  1  0.71  0.0  0.11  1.0
  Si  Si5  1  0.91  0.0  0.19  1.0
  Cl  Cl0  1  0.1  0.0  0.92  1.0
  Cl  Cl1  1  0.21  0.0  0.24  1.0

data_Si2Cl
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.92
_cell_length_b   6.32
_cell_length_c   7.26
_cell_angle_alpha   95.24
_cell_angle_beta   101.6
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2Cl
_chemical_formula_sum   'Si4 Cl2'
_cell_volume   130.63
_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
  Si  Si0  1  0.0  0.11  0.71  1.0
  Si  Si1  1  0.0  0.19  0.91  1.0
  Si  Si2  1  0.0  0.21  0.71  1.0
  Si  Si3  1  0.0  0.26  0.76  1.0
  Cl  Cl4  1  0.0  0.24  0.21  1.0
  Cl  Cl5  1  0.0  0.92  0.1  1.0

Si Si Si Si Cl Cl
Si Si Si Si Cl Cl 0 1 o o o 0 3 o o o 1 2 o o o 1 3 o o o 2 3 o o o 3 4 + o - 3 5 + o o 4 5 o o + 