data_TlSnHgAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   5.2
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TlSnHgAu
_chemical_formula_sum   'Tl1 Sn1 Hg1 Au1'
_cell_volume   99.3
_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
  Tl  Tl3  1  0.84  0.84  0.84  1.0
  Sn  Sn2  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.51  0.51  0.51  1.0
  Au  Au0  1  0.68  0.68  0.68  1.0

data_TlSnHgAu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   12.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   TlSnHgAu
_chemical_formula_sum   'Tl3 Sn3 Hg3 Au3'
_cell_volume   297.89
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Tl  Tl0  3  0.0  0.0  0.16  1.0
  Sn  Sn1  3  0.0  0.0  0.0  1.0
  Hg  Hg2  3  0.0  0.0  0.49  1.0
  Au  Au3  3  0.0  0.0  0.32  1.0

Tl Sn Hg Au
AuHgTlSn crystallizes in the trigonal R3m space group. Au(1) is bonded to one Hg(1), one Tl(1), and three equivalent Sn(1) atoms to form distorted AuTlSn3Hg trigonal bipyramids that share corners with six equivalent Au(1)TlSn3Hg trigonal bipyramids,  a cornercorner with one Sn(1)TlAu3 trigonal pyramid, and corners with three equivalent Hg(1)Tl3Au trigonal pyramids. The Au(1)-Hg(1) bond length is 2.07 Å. The Au(1)-Tl(1) bond length is 2.07 Å. All Au(1)-Sn(1) bond lengths are 3.00 Å. Hg(1) is bonded to one Au(1) and three equivalent Tl(1) atoms to form distorted HgTl3Au trigonal pyramids that share corners with three equivalent Au(1)TlSn3Hg trigonal bipyramids, corners with six equivalent Hg(1)Tl3Au trigonal pyramids, and edges with three equivalent Sn(1)TlAu3 trigonal pyramids. All Hg(1)-Tl(1) bond lengths are 3.00 Å. Tl(1) is bonded in a 5-coordinate geometry to one Au(1), three equivalent Hg(1), and one Sn(1) atom. The Tl(1)-Sn(1) bond length is 2.07 Å. Sn(1) is bonded to three equivalent Au(1) and one Tl(1) atom to form SnTlAu3 trigonal pyramids that share  a cornercorner with one Au(1)TlSn3Hg trigonal bipyramid, corners with six equivalent Sn(1)TlAu3 trigonal pyramids, and edges with three equivalent Hg(1)Tl3Au trigonal pyramids.