data_Mg2VHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.22
_cell_length_b   4.22
_cell_length_c   4.12
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg2VHg
_chemical_formula_sum   'Mg2 V1 Hg1'
_cell_volume   73.29
_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
  Mg  Mg1  1  0.11  0.0  0.06  1.0
  Mg  Mg2  1  0.0  0.11  0.06  1.0
  V  V3  1  0.0  0.0  0.0  1.0
  Hg  Hg0  1  0.11  0.11  0.0  1.0

data_Mg2VHg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.96
_cell_length_b   5.96
_cell_length_c   4.12
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Mg2VHg
_chemical_formula_sum   'Mg4 V2 Hg2'
_cell_volume   146.58
_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+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  4  0.05  0.05  0.06  1.0
  V  V1  2  0.0  0.0  0.0  1.0
  Hg  Hg2  2  0.11  0.0  0.0  1.0

Mg Mg V Hg
Mg Mg V Hg 0 2 o o o 0 3 o o o 1 2 o o o 1 3 o o o 
Mg2VHg is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Mg2VHg clusters. Mg(1) is bonded in a 2-coordinate geometry to one V(1) and one Hg(1) atom. The Mg(1)-V(1) bond length is 0.52 Å. The Mg(1)-Hg(1) bond length is 0.52 Å. V(1) is bonded in a 3-coordinate geometry to two equivalent Mg(1) and one Hg(1) atom. The V(1)-Hg(1) bond length is 0.65 Å. Hg(1) is bonded in a 2-coordinate geometry to two equivalent Mg(1) and one V(1) atom.