data_Cr2SiCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.48
_cell_length_b   6.48
_cell_length_c   6.48
_cell_angle_alpha   143.13
_cell_angle_beta   143.13
_cell_angle_gamma   53.14
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr2SiCl2
_chemical_formula_sum   'Cr2 Si1 Cl2'
_cell_volume   97.35
_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
  Cr  Cr2  1  0.0  0.0  0.17  1.0
  Cr  Cr3  1  0.0  0.0  0.42  1.0
  Si  Si4  1  0.0  0.0  0.0  1.0
  Cl  Cl0  1  0.0  0.05  0.9  1.0
  Cl  Cl1  1  0.05  0.0  0.9  1.0

data_Cr2SiCl2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.8
_cell_length_b   5.8
_cell_length_c   6.48
_cell_angle_alpha   90.0
_cell_angle_beta   116.57
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Cr2SiCl2
_chemical_formula_sum   'Cr4 Si2 Cl4'
_cell_volume   194.7
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Cr  Cr0  2  0.0  0.0  0.58  1.0
  Cr  Cr1  2  0.0  0.0  0.83  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0
  Cl  Cl3  4  0.02  0.02  0.15  1.0

Cr Cr Si Cl Cl