data_NbHg2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.57
_cell_length_b   9.57
_cell_length_c   9.57
_cell_angle_alpha   18.43
_cell_angle_beta   18.43
_cell_angle_gamma   18.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbHg2Pt
_chemical_formula_sum   'Nb1 Hg2 Pt1'
_cell_volume   76.47
_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
  Nb  Nb2  1  0.0  0.0  0.0  1.0
  Hg  Hg0  1  0.0  0.0  0.23  1.0
  Hg  Hg1  1  0.0  0.0  0.98  1.0
  Pt  Pt3  1  0.0  0.0  0.1  1.0

data_NbHg2Pt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.31
_cell_length_b   3.06
_cell_length_c   9.57
_cell_angle_alpha   90.0
_cell_angle_beta   100.66
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NbHg2Pt
_chemical_formula_sum   'Nb2 Hg4 Pt2'
_cell_volume   152.94
_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
  Nb  Nb0  2  0.0  0.0  0.0  1.0
  Hg  Hg1  2  0.0  0.0  0.02  1.0
  Hg  Hg2  2  0.0  0.0  0.77  1.0
  Pt  Pt3  2  0.0  0.0  0.9  1.0

Nb Hg Hg Pt
NbPtHg2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two NbPtHg2 clusters. Nb(1) is bonded in a linear geometry to one Pt(1) and one Hg(2) atom. The Nb(1)-Pt(1) bond length is 0.99 Å. The Nb(1)-Hg(2) bond length is 0.19 Å. Pt(1) is bonded in a linear geometry to one Nb(1) and one Hg(1) atom. The Pt(1)-Hg(1) bond length is 1.18 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a single-bond geometry to one Pt(1) atom. In the second Hg site, Hg(2) is bonded in a single-bond geometry to one Nb(1) atom.