data_SiAgHg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   5.67
_cell_angle_alpha   101.29
_cell_angle_beta   101.29
_cell_angle_gamma   38.66
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAgHg2
_chemical_formula_sum   'Si1 Ag1 Hg2'
_cell_volume   83.11
_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
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.03  0.0  0.77  1.0
  Hg  Hg1  1  0.43  0.0  0.17  1.0
  Hg  Hg2  1  0.63  0.0  0.37  1.0

data_SiAgHg2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.24
_cell_length_b   4.9
_cell_length_c   5.67
_cell_angle_alpha   101.29
_cell_angle_beta   90.0
_cell_angle_gamma   109.33
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAgHg2
_chemical_formula_sum   'Si1 Ag1 Hg2'
_cell_volume   83.11
_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
  Si  Si0  1  0.0  0.0  0.0  1.0
  Ag  Ag1  1  0.0  0.97  0.23  1.0
  Hg  Hg2  1  0.0  0.37  0.63  1.0
  Hg  Hg3  1  0.0  0.57  0.83  1.0

Si Ag Hg Hg
AgHg2Si is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one AgHg2Si cluster. Ag(1) is bonded in a distorted single-bond geometry to one Si(1) atom. The Ag(1)-Si(1) bond length is 1.33 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a bent 150 degrees geometry to one Hg(2) and one Si(1) atom. The Hg(1)-Hg(2) bond length is 1.33 Å. The Hg(1)-Si(1) bond length is 2.16 Å. In the second Hg site, Hg(2) is bonded in a 1-coordinate geometry to one Hg(1) atom. Si(1) is bonded in a 2-coordinate geometry to one Ag(1) and one Hg(1) atom.