The crystal structure described by MgHg5 crystallizes in the trigonal R32 space group. Mg(1) is bonded in a 6-coordinate geometry to six equivalent Hg(1) and six equivalent Hg(2) atoms. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Mg(1) and four equivalent Hg(2) atoms. In the second Hg site, Hg(2) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Hg(1) atoms. is represented by the CIF file [CIF]
data_MgHg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.000
_cell_length_b   6.000
_cell_length_c   6.000
_cell_angle_alpha   60.658
_cell_angle_beta   60.658
_cell_angle_gamma   60.658
_symmetry_Int_Tables_number   1
_cell_volume   154.987
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Hg  Hg1  1  0.116  0.884  0.500  1.0
  Hg  Hg2  1  0.500  0.116  0.884  1.0
  Hg  Hg3  1  0.884  0.500  0.116  1.0
  Hg  Hg4  1  0.646  0.646  0.646  1.0
  Hg  Hg5  1  0.354  0.354  0.354  1.0
[/CIF]
.
The crystal structure described by MgHg5 crystallizes in the trigonal R32 space group. Mg(1) is bonded in a 6-coordinate geometry to six equivalent Hg(1) and six equivalent Hg(2) atoms. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Mg(1) and four equivalent Hg(2) atoms. In the second Hg site, Hg(2) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Hg(1) atoms. is represented by the CIF file [CIF]
data_MgHg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.000
_cell_length_b   6.000
_cell_length_c   6.000
_cell_angle_alpha   60.658
_cell_angle_beta   60.658
_cell_angle_gamma   60.658
_symmetry_Int_Tables_number   1
_cell_volume   154.987
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Hg  Hg1  1  0.116  0.884  0.500  1.0
  Hg  Hg2  1  0.500  0.116  0.884  1.0
  Hg  Hg3  1  0.884  0.500  0.116  1.0
  Hg  Hg4  1  0.646  0.646  0.646  1.0
  Hg  Hg5  1  0.354  0.354  0.354  1.0
[/CIF]
.