data_Zr2SnHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.88
_cell_length_b   3.88
_cell_length_c   6.11
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zr2SnHg
_chemical_formula_sum   'Zr2 Sn1 Hg1'
_cell_volume   92.05
_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
  Zr  Zr2  1  0.94  0.94  0.07  1.0
  Zr  Zr3  1  0.0  0.0  0.54  1.0
  Sn  Sn1  1  0.0  0.0  0.65  1.0
  Hg  Hg0  1  0.94  0.94  0.01  1.0

data_Zr2SnHg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.49
_cell_length_b   5.49
_cell_length_c   6.11
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Zr2SnHg
_chemical_formula_sum   'Zr4 Sn2 Hg2'
_cell_volume   184.1
_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
  Zr  Zr0  2  0.0  0.0  0.54  1.0
  Zr  Zr1  2  0.44  0.5  0.07  1.0
  Sn  Sn2  2  0.0  0.0  0.65  1.0
  Hg  Hg3  2  0.44  0.5  0.01  1.0

Zr Zr Sn Hg
ZrHgZrSn crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two mercury;zirconium molecules and two ZrSn clusters. In each ZrSn cluster, Zr(2) is bonded in a single-bond geometry to one Sn(1) atom. The Zr(2)-Sn(1) bond length is 0.70 Å. Sn(1) is bonded in a single-bond geometry to one Zr(2) atom.