data_SiH4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.9
_cell_length_b   4.62
_cell_length_c   25.47
_cell_angle_alpha   90.0
_cell_angle_beta   94.18
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiH4
_chemical_formula_sum   'Si2 H8'
_cell_volume   927.04
_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  0.82  0.1  0.07  1.0
  Si  Si1  1  0.32  0.4  0.07  1.0
  H  H2  1  0.72  0.01  0.02  1.0
  H  H3  1  0.22  0.49  0.02  1.0
  H  H4  1  0.99  0.96  0.07  1.0
  H  H5  1  0.49  0.54  0.07  1.0
  H  H6  1  0.84  0.42  0.07  1.0
  H  H7  1  0.34  0.08  0.07  1.0
  H  H8  1  0.24  0.49  0.12  1.0
  H  H9  1  0.74  0.01  0.12  1.0

Si Si H H H H H H H H 0 2 o o o 0 9 o o o 0 4 o - o 0 6 o o o 1 3 o o o 1 8 o o o 1 7 o o o 1 5 o o o 
data_SiH4
_symmetry_space_group_name_H-M   Pc
_cell_length_a   25.47
_cell_length_b   4.62
_cell_length_c   7.9
_cell_angle_alpha   90.0
_cell_angle_beta   94.18
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   7
_chemical_formula_structural   SiH4
_chemical_formula_sum   'Si2 H8'
_cell_volume   927.04
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z+1/2'
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  2  0.93  0.35  0.68  1.0
  H  H1  2  0.88  0.26  0.76  1.0
  H  H2  2  0.93  0.21  0.51  1.0
  H  H3  2  0.93  0.33  0.16  1.0
  H  H4  2  0.98  0.26  0.78  1.0

Si Si H H H H H H H H