data_LiAuSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.84
_cell_length_b   3.84
_cell_length_c   5.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiAuSe2
_chemical_formula_sum   'Li1 Au1 Se2'
_cell_volume   79.3
_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  Li1  1  0.0  0.0  0.66  1.0
  Au  Au0  1  0.92  0.92  0.05  1.0
  Se  Se2  1  0.92  0.92  0.73  1.0
  Se  Se3  1  0.0  0.0  0.99  1.0

data_LiAuSe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.43
_cell_length_b   5.43
_cell_length_c   5.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LiAuSe2
_chemical_formula_sum   'Li2 Au2 Se4'
_cell_volume   158.6
_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
  Li  Li0  2  0.0  0.0  0.66  1.0
  Au  Au1  2  0.42  0.5  0.05  1.0
  Se  Se2  2  0.0  0.0  0.99  1.0
  Se  Se3  2  0.42  0.5  0.73  1.0

Li Au Se Se
LiSeAuSe is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two lambda1-selanyllithium molecules and two AuSe clusters. In each AuSe cluster, Au(1) is bonded in a single-bond geometry to one Se(2) atom. The Au(1)-Se(2) bond length is 0.55 Å. Se(2) is bonded in a distorted single-bond geometry to one Au(1) atom.