data_In2Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.62
_cell_length_b   7.62
_cell_length_c   6.35
_cell_angle_alpha   107.4
_cell_angle_beta   107.4
_cell_angle_gamma   23.84
_symmetry_Int_Tables_number   1
_chemical_formula_structural   In2Si
_chemical_formula_sum   'In4 Si2'
_cell_volume   141.63
_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
  In  In0  1  0.41  0.0  0.74  1.0
  In  In1  1  0.55  0.0  0.3  1.0
  In  In2  1  0.76  0.0  0.38  1.0
  In  In3  1  0.2  0.0  0.66  1.0
  Si  Si4  1  0.1  0.0  0.98  1.0
  Si  Si5  1  0.86  0.0  0.06  1.0

data_In2Si
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.15
_cell_length_b   6.35
_cell_length_c   7.62
_cell_angle_alpha   107.4
_cell_angle_beta   101.92
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   In2Si
_chemical_formula_sum   'In4 Si2'
_cell_volume   141.63
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  In  In0  2  0.0  0.28  0.07  1.0
  In  In1  2  0.0  0.36  0.28  1.0
  Si  Si2  2  0.0  0.04  0.38  1.0

In In In In Si Si