data_AgHg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.05
_cell_length_b   5.05
_cell_length_c   3.02
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgHg2
_chemical_formula_sum   'Ag1 Hg2'
_cell_volume   76.86
_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
  Ag  Ag0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.0  0.52  0.51  1.0
  Hg  Hg2  1  0.52  0.0  0.51  1.0

data_AgHg2
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   3.02
_cell_length_b   7.14
_cell_length_c   7.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   AgHg2
_chemical_formula_sum   'Ag2 Hg4'
_cell_volume   153.73
_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, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -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
  Ag  Ag0  2  0.0  0.0  0.0  1.0
  Hg  Hg1  4  0.5  0.24  0.76  1.0

Ag Hg Hg
AgHg2 crystallizes in the monoclinic Cm space group. Ag(1) is bonded in a 10-coordinate geometry to two equivalent Ag(1) and eight equivalent Hg(1) atoms. Both Ag(1)-Ag(1) bond lengths are 3.02 Å. There are a spread of Ag(1)-Hg(1) bond distances ranging from 2.82-3.06 Å. Hg(1) is bonded in a distorted hexagonal planar geometry to four equivalent Ag(1) and two equivalent Hg(1) atoms. Both Hg(1)-Hg(1) bond lengths are 3.02 Å.