The material structure described by Ag2HgI4 crystallizes in the tetragonal I-42m space group. Ag(1) is bonded to four equivalent I(1) atoms to form AgI4 tetrahedra that share corners with four equivalent Ag(1)I4 tetrahedra and corners with four equivalent Hg(1)I4 tetrahedra. Hg(1) is bonded to four equivalent I(1) atoms to form HgI4 tetrahedra that share corners with eight equivalent Ag(1)I4 tetrahedra. I(1) is bonded in a trigonal non-coplanar geometry to two equivalent Ag(1) and one Hg(1) atom. is represented by the CIF file [CIF]
data_Ag2HgI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.850
_cell_length_b   7.850
_cell_length_c   7.850
_cell_angle_alpha   131.327
_cell_angle_beta   131.327
_cell_angle_gamma   71.293
_symmetry_Int_Tables_number   1
_cell_volume   266.982
_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  0.750  0.250  0.500  1.0
  Ag  Ag1  1  0.250  0.750  0.500  1.0
  Hg  Hg2  1  0.500  0.500  0.000  1.0
  I  I3  1  0.355  0.882  0.000  1.0
  I  I4  1  0.118  0.118  0.473  1.0
  I  I5  1  0.882  0.355  0.000  1.0
  I  I6  1  0.645  0.645  0.527  1.0
[/CIF]
.
The material structure described by Ag2HgI4 crystallizes in the tetragonal I-42m space group. Ag(1) is bonded to four equivalent I(1) atoms to form AgI4 tetrahedra that share corners with four equivalent Ag(1)I4 tetrahedra and corners with four equivalent Hg(1)I4 tetrahedra. Hg(1) is bonded to four equivalent I(1) atoms to form HgI4 tetrahedra that share corners with eight equivalent Ag(1)I4 tetrahedra. I(1) is bonded in a trigonal non-coplanar geometry to two equivalent Ag(1) and one Hg(1) atom. is represented by the CIF file [CIF]
data_Ag2HgI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.850
_cell_length_b   7.850
_cell_length_c   7.850
_cell_angle_alpha   131.327
_cell_angle_beta   131.327
_cell_angle_gamma   71.293
_symmetry_Int_Tables_number   1
_cell_volume   266.982
_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  0.750  0.250  0.500  1.0
  Ag  Ag1  1  0.250  0.750  0.500  1.0
  Hg  Hg2  1  0.500  0.500  0.000  1.0
  I  I3  1  0.355  0.882  0.000  1.0
  I  I4  1  0.118  0.118  0.473  1.0
  I  I5  1  0.882  0.355  0.000  1.0
  I  I6  1  0.645  0.645  0.527  1.0
[/CIF]
.