data_VHgSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.64
_cell_length_b   6.64
_cell_length_c   6.64
_cell_angle_alpha   152.15
_cell_angle_beta   152.15
_cell_angle_gamma   39.8
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VHgSe
_chemical_formula_sum   'V1 Hg1 Se1'
_cell_volume   63.66
_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
  V  V2  1  0.0  0.0  0.6  1.0
  Hg  Hg0  1  0.0  0.0  0.31  1.0
  Se  Se1  1  0.0  0.0  0.57  1.0

data_VHgSe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.52
_cell_length_b   4.52
_cell_length_c   6.64
_cell_angle_alpha   90.0
_cell_angle_beta   109.9
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   VHgSe
_chemical_formula_sum   'V2 Hg2 Se2'
_cell_volume   127.32
_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
  V  V0  2  0.1  0.5  0.6  1.0
  Hg  Hg1  2  0.31  0.0  0.31  1.0
  Se  Se2  2  0.07  0.5  0.57  1.0

V Hg Se
VHgSe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two VHgSe clusters. V(1) is bonded in a single-bond geometry to one Se(1) atom. The V(1)-Se(1) bond length is 0.21 Å. Hg(1) is bonded in a single-bond geometry to one Se(1) atom. The Hg(1)-Se(1) bond length is 1.73 Å. Se(1) is bonded in a distorted single-bond geometry to one V(1) and one Hg(1) atom.