data_Si2Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.3
_cell_length_b   4.8
_cell_length_c   7.28
_cell_angle_alpha   58.68
_cell_angle_beta   40.61
_cell_angle_gamma   80.71
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2Ni3
_chemical_formula_sum   'Si4 Ni6'
_cell_volume   111.22
_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  Si6  1  0.09  0.29  0.79  1.0
  Si  Si7  1  0.43  0.52  0.79  1.0
  Si  Si8  1  0.96  0.47  0.68  1.0
  Si  Si9  1  0.56  0.34  0.68  1.0
  Ni  Ni0  1  0.8  0.65  0.82  1.0
  Ni  Ni1  1  0.73  0.16  0.82  1.0
  Ni  Ni2  1  0.93  0.11  0.93  1.0
  Ni  Ni3  1  0.86  0.6  0.93  1.0
  Ni  Ni4  1  0.26  0.9  0.04  1.0
  Ni  Ni5  1  0.13  0.95  0.73  1.0

data_Si2Ni3
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.42
_cell_length_b   4.8
_cell_length_c   6.3
_cell_angle_alpha   80.71
_cell_angle_beta   69.48
_cell_angle_gamma   62.6
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2Ni3
_chemical_formula_sum   'Si4 Ni6'
_cell_volume   111.22
_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  0.04  0.85  0.64  1.0
  Si  Si1  1  0.44  0.98  0.25  1.0
  Si  Si2  1  0.57  0.7  0.22  1.0
  Si  Si3  1  0.91  0.92  0.88  1.0
  Ni  Ni4  1  0.07  0.97  0.85  1.0
  Ni  Ni5  1  0.14  0.48  0.79  1.0
  Ni  Ni6  1  0.2  0.53  0.62  1.0
  Ni  Ni7  1  0.27  0.02  0.55  1.0
  Ni  Ni8  1  0.74  0.05  0.31  1.0
  Ni  Ni9  1  0.87  0.32  0.86  1.0

Si Si Si Si Ni Ni Ni Ni Ni Ni