data_TcHgBi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.37
_cell_length_b   3.37
_cell_length_c   9.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TcHgBi2
_chemical_formula_sum   'Tc1 Hg1 Bi2'
_cell_volume   102.58
_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
  Tc  Tc3  1  0.0  0.0  0.0  1.0
  Hg  Hg2  1  0.0  0.0  0.52  1.0
  Bi  Bi0  1  0.68  0.68  0.7  1.0
  Bi  Bi1  1  0.68  0.68  0.35  1.0

data_TcHgBi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   9.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TcHgBi2
_chemical_formula_sum   'Tc2 Hg2 Bi4'
_cell_volume   205.16
_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
  Tc  Tc0  2  0.0  0.0  0.0  1.0
  Hg  Hg1  2  0.0  0.0  0.52  1.0
  Bi  Bi2  2  0.18  0.5  0.35  1.0
  Bi  Bi3  2  0.18  0.5  0.7  1.0

Tc Hg Bi Bi
TcHgBi2 crystallizes in the monoclinic Cm space group. Tc(1) is bonded in a 6-coordinate geometry to four equivalent Tc(1), one Bi(1), and one Bi(2) atom. All Tc(1)-Tc(1) bond lengths are 3.37 Å. The Tc(1)-Bi(1) bond length is 3.14 Å. The Tc(1)-Bi(2) bond length is 3.55 Å. Hg(1) is bonded in a distorted L-shaped geometry to one Bi(1) and one Bi(2) atom. The Hg(1)-Bi(1) bond length is 2.16 Å. The Hg(1)-Bi(2) bond length is 2.16 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 1-coordinate geometry to one Tc(1) and one Hg(1) atom. In the second Bi site, Bi(2) is bonded in a distorted single-bond geometry to one Tc(1) and one Hg(1) atom.