The compound described by MgHg5 crystallizes in the hexagonal P-6m2 space group. Mg(1) is bonded to six equivalent Hg(3) atoms to form distorted edge-sharing MgHg6 pentagonal pyramids. There are three inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a 6-coordinate geometry to three equivalent Hg(2) and three equivalent Hg(3) atoms. In the second Hg site, Hg(2) is bonded in a 6-coordinate geometry to six equivalent Hg(1) atoms. In the third Hg site, Hg(3) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Hg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgHg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.708
_cell_length_b   3.708
_cell_length_c   13.158
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   156.681
_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  0.667  0.333  0.833  1.0
  Hg  Hg1  1  0.667  0.333  0.160  1.0
  Hg  Hg2  1  0.000  0.000  0.333  1.0
  Hg  Hg3  1  0.667  0.333  0.507  1.0
  Hg  Hg4  1  0.000  0.000  0.682  1.0
  Hg  Hg5  1  0.000  0.000  0.985  1.0
[/CIF]
.
The compound described by MgHg5 crystallizes in the hexagonal P-6m2 space group. Mg(1) is bonded to six equivalent Hg(3) atoms to form distorted edge-sharing MgHg6 pentagonal pyramids. There are three inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a 6-coordinate geometry to three equivalent Hg(2) and three equivalent Hg(3) atoms. In the second Hg site, Hg(2) is bonded in a 6-coordinate geometry to six equivalent Hg(1) atoms. In the third Hg site, Hg(3) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Hg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgHg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.708
_cell_length_b   3.708
_cell_length_c   13.158
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   156.681
_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  0.667  0.333  0.833  1.0
  Hg  Hg1  1  0.667  0.333  0.160  1.0
  Hg  Hg2  1  0.000  0.000  0.333  1.0
  Hg  Hg3  1  0.667  0.333  0.507  1.0
  Hg  Hg4  1  0.000  0.000  0.682  1.0
  Hg  Hg5  1  0.000  0.000  0.985  1.0
[/CIF]
.