data_Be2NiHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.09
_cell_length_b   8.09
_cell_length_c   8.09
_cell_angle_alpha   19.79
_cell_angle_beta   19.79
_cell_angle_gamma   19.79
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2NiHg
_chemical_formula_sum   'Be2 Ni1 Hg1'
_cell_volume   53.11
_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
  Be  Be0  1  0.0  0.0  0.42  1.0
  Be  Be1  1  0.0  0.0  0.36  1.0
  Ni  Ni3  1  0.0  0.0  0.0  1.0
  Hg  Hg2  1  0.0  0.0  0.89  1.0

data_Be2NiHg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.82
_cell_length_b   2.78
_cell_length_c   8.09
_cell_angle_alpha   90.0
_cell_angle_beta   101.45
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2NiHg
_chemical_formula_sum   'Be4 Ni2 Hg2'
_cell_volume   106.22
_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
  Be  Be0  2  0.0  0.0  0.58  1.0
  Be  Be1  2  0.0  0.0  0.64  1.0
  Ni  Ni2  2  0.0  0.0  0.0  1.0
  Hg  Hg3  2  0.0  0.0  0.11  1.0

Be Be Ni Hg
Be Be Ni Hg 0 1 o o o 2 3 o o - 
(Be)2HgNi is Cubic alpha N2-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be clusters and two HgNi clusters. In each Be cluster, there are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a single-bond geometry to one Be(2) atom. The Be(1)-Be(2) bond length is 0.50 Å. In the second Be site, Be(2) is bonded in a single-bond geometry to one Be(1) atom. In each HgNi cluster, Ni(1) is bonded in a single-bond geometry to one Hg(1) atom. The Ni(1)-Hg(1) bond length is 0.86 Å. Hg(1) is bonded in a single-bond geometry to one Ni(1) atom.