data_Ga2HgPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.35
_cell_length_b   3.35
_cell_length_c   8.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ga2HgPb
_chemical_formula_sum   'Ga2 Hg1 Pb1'
_cell_volume   96.62
_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
  Ga  Ga0  1  0.67  0.67  0.64  1.0
  Ga  Ga1  1  0.67  0.67  0.98  1.0
  Hg  Hg2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.0  0.0  0.31  1.0

data_Ga2HgPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   8.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ga2HgPb
_chemical_formula_sum   'Ga4 Hg2 Pb2'
_cell_volume   193.23
_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
  Ga  Ga0  2  0.17  0.5  0.64  1.0
  Ga  Ga1  2  0.17  0.5  0.98  1.0
  Hg  Hg2  2  0.0  0.0  0.0  1.0
  Pb  Pb3  2  0.0  0.0  0.31  1.0

Ga Ga Hg Pb
Ga Ga Hg Pb 0 3 o + o 0 3 + o o 0 3 + + o 0 0 + o o 0 0 o + o 0 2 + + + 0 1 o o o 1 2 + + + 1 3 + + + 2 3 o o o 3 3 + o o 3 3 o + o 