data_SrAlHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.48
_cell_length_b   6.45
_cell_length_c   3.7
_cell_angle_alpha   73.71
_cell_angle_beta   72.98
_cell_angle_gamma   33.31
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrAlHg
_chemical_formula_sum   'Sr1 Al1 Hg1'
_cell_volume   81.08
_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
  Sr  Sr2  1  0.59  0.65  0.93  1.0
  Al  Al0  1  0.59  0.65  0.3  1.0
  Hg  Hg1  1  0.59  0.65  0.58  1.0

data_SrAlHg
_symmetry_space_group_name_H-M   Imm2
_cell_length_a   3.7
_cell_length_b   11.82
_cell_length_c   3.7
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   44
_chemical_formula_structural   SrAlHg
_chemical_formula_sum   'Sr2 Al2 Hg2'
_cell_volume   162.2
_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, y, z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z+1/2'
  6  '-x+1/2, -y+1/2, z+1/2'
  7  '-x+1/2, y+1/2, z+1/2'
  8  'x+1/2, -y+1/2, 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
  Sr  Sr0  2  0.0  0.0  0.58  1.0
  Al  Al1  2  0.0  0.0  0.95  1.0
  Hg  Hg2  2  0.0  0.0  0.23  1.0

Sr Al Hg