data_Si2HgW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.34
_cell_length_b   4.96
_cell_length_c   4.96
_cell_angle_alpha   40.85
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2HgW
_chemical_formula_sum   'Si2 Hg1 W1'
_cell_volume   69.89
_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
  Si  Si1  1  0.0  0.0  0.98  1.0
  Si  Si2  1  0.17  0.0  0.33  1.0
  Hg  Hg0  1  0.17  0.0  0.83  1.0
  W  W3  1  0.0  0.0  0.55  1.0

data_Si2HgW
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.46
_cell_length_b   4.34
_cell_length_c   4.96
_cell_angle_alpha   90.0
_cell_angle_beta   110.43
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2HgW
_chemical_formula_sum   'Si2 Hg1 W1'
_cell_volume   69.89
_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
  Si  Si0  1  0.02  0.0  0.02  1.0
  Si  Si1  1  0.67  0.17  0.67  1.0
  Hg  Hg2  1  0.17  0.17  0.17  1.0
  W  W3  1  0.45  0.0  0.45  1.0

Si Si Hg W