data_Cr2HgBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.7
_cell_length_b   4.7
_cell_length_c   3.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr2HgBi
_chemical_formula_sum   'Cr2 Hg1 Bi1'
_cell_volume   85.35
_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
  Cr  Cr1  1  0.35  0.0  0.93  1.0
  Cr  Cr2  1  0.0  0.35  0.93  1.0
  Hg  Hg3  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.35  0.35  0.0  1.0

data_Cr2HgBi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.65
_cell_length_b   6.65
_cell_length_c   3.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Cr2HgBi
_chemical_formula_sum   'Cr4 Hg2 Bi2'
_cell_volume   170.7
_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
  Cr  Cr0  4  0.18  0.18  0.93  1.0
  Hg  Hg1  2  0.0  0.0  0.0  1.0
  Bi  Bi2  2  0.35  0.0  0.0  1.0

Cr Cr Hg Bi
Cr2HgBi is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Cr2HgBi clusters. Cr(1) is bonded in a distorted L-shaped geometry to one Hg(1) and one Bi(1) atom. The Cr(1)-Hg(1) bond length is 1.67 Å. The Cr(1)-Bi(1) bond length is 1.67 Å. Hg(1) is bonded in a distorted L-shaped geometry to two equivalent Cr(1) atoms. Bi(1) is bonded in a distorted L-shaped geometry to two equivalent Cr(1) atoms.