data_Li2CuHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   4.76
_cell_angle_alpha   130.29
_cell_angle_beta   128.17
_cell_angle_gamma   74.65
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2CuHg
_chemical_formula_sum   'Li2 Cu1 Hg1'
_cell_volume   63.15
_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  0.86  1.0
  Li  Li3  1  0.0  0.08  0.93  1.0
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.0  0.0  0.79  1.0

data_Li2CuHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.0
_cell_length_b   4.16
_cell_length_c   4.76
_cell_angle_alpha   115.92
_cell_angle_beta   114.85
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2CuHg
_chemical_formula_sum   'Li2 Cu1 Hg1'
_cell_volume   63.15
_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  0.07  0.15  0.15  1.0
  Li  Li1  1  0.14  0.14  0.14  1.0
  Cu  Cu2  1  0.0  0.0  0.0  1.0
  Hg  Hg3  1  0.21  0.21  0.21  1.0

Li Li Cu Hg