data_FeAgHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.46
_cell_length_b   6.45
_cell_length_c   2.93
_cell_angle_alpha   77.14
_cell_angle_beta   76.66
_cell_angle_gamma   26.2
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeAgHg
_chemical_formula_sum   'Fe1 Ag1 Hg1'
_cell_volume   52.29
_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
  Fe  Fe1  1  0.05  0.09  0.11  1.0
  Ag  Ag0  1  0.05  0.09  0.07  1.0
  Hg  Hg2  1  0.05  0.09  0.26  1.0

data_FeAgHg
_symmetry_space_group_name_H-M   Imm2
_cell_length_a   2.93
_cell_length_b   12.22
_cell_length_c   2.93
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   44
_chemical_formula_structural   FeAgHg
_chemical_formula_sum   'Fe2 Ag2 Hg2'
_cell_volume   104.6
_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, y, z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z+1/2'
  6  '-x+1/2, -y+1/2, z+1/2'
  7  '-x+1/2, y+1/2, z+1/2'
  8  'x+1/2, -y+1/2, z+1/2'
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
  Fe  Fe0  2  0.0  0.0  0.84  1.0
  Ag  Ag1  2  0.0  0.0  0.88  1.0
  Hg  Hg2  2  0.0  0.0  0.69  1.0

Fe Ag Hg
FeAgHg crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two FeAgHg clusters. Fe(1) is bonded in a linear geometry to one Ag(1) and one Hg(1) atom. The Fe(1)-Ag(1) bond length is 0.12 Å. The Fe(1)-Hg(1) bond length is 0.43 Å. Ag(1) is bonded in a single-bond geometry to one Fe(1) atom. Hg(1) is bonded in a single-bond geometry to one Fe(1) atom.