data_LiAlHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.65
_cell_length_b   4.65
_cell_length_c   3.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiAlHg
_chemical_formula_sum   'Li1 Al1 Hg1'
_cell_volume   58.02
_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
  Li  Li2  1  0.0  0.0  0.06  1.0
  Al  Al0  1  1.0  0.68  0.49  1.0
  Hg  Hg1  1  0.32  0.34  0.56  1.0

data_LiAlHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.1
_cell_length_b   4.65
_cell_length_c   4.65
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiAlHg
_chemical_formula_sum   'Li1 Al1 Hg1'
_cell_volume   58.02
_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
  Li  Li0  1  0.06  0.0  0.0  1.0
  Al  Al1  1  0.49  1.0  0.68  1.0
  Hg  Hg2  1  0.56  0.32  0.34  1.0

Li Al Hg
LiHgAl crystallizes in the triclinic P1 space group. Li(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Hg(1) and two equivalent Al(1) atoms. There is one shorter (2.18 Å) and one longer (2.20 Å) Li(1)-Hg(1) bond length. There is one shorter (2.00 Å) and one longer (2.29 Å) Li(1)-Al(1) bond length. Hg(1) is bonded in a 2-coordinate geometry to two equivalent Li(1) and two equivalent Al(1) atoms. There is one shorter (2.68 Å) and one longer (2.73 Å) Hg(1)-Al(1) bond length. Al(1) is bonded in a 4-coordinate geometry to two equivalent Li(1) and two equivalent Hg(1) atoms.