data_NaTlGaHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   5.23
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTlGaHg
_chemical_formula_sum   'Na1 Tl1 Ga1 Hg1'
_cell_volume   101.42
_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
  Na  Na2  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.85  0.85  0.85  1.0
  Ga  Ga0  1  0.55  0.55  0.55  1.0
  Hg  Hg1  1  0.7  0.7  0.7  1.0

data_NaTlGaHg
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   12.82
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   NaTlGaHg
_chemical_formula_sum   'Na3 Tl3 Ga3 Hg3'
_cell_volume   304.26
_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
  Na  Na0  3  0.0  0.0  0.0  1.0
  Tl  Tl1  3  0.0  0.0  0.15  1.0
  Ga  Ga2  3  0.0  0.0  0.45  1.0
  Hg  Hg3  3  0.0  0.0  0.3  1.0

Na Tl Ga Hg
NaHgTlGa crystallizes in the trigonal R3m space group. Na(1) is bonded in a distorted single-bond geometry to three equivalent Hg(1) and one Tl(1) atom. All Na(1)-Hg(1) bond lengths are 3.05 Å. The Na(1)-Tl(1) bond length is 1.91 Å. Hg(1) is bonded to three equivalent Na(1), one Tl(1), and one Ga(1) atom to form distorted corner-sharing HgNa3TlGa trigonal bipyramids. The Hg(1)-Tl(1) bond length is 1.91 Å. The Hg(1)-Ga(1) bond length is 1.91 Å. Tl(1) is bonded in a linear geometry to one Na(1) and one Hg(1) atom. Ga(1) is bonded in a distorted single-bond geometry to one Hg(1) atom.