data_SrReHg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.32
_cell_length_b   10.32
_cell_length_c   10.32
_cell_angle_alpha   17.68
_cell_angle_beta   17.68
_cell_angle_gamma   17.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrReHg2
_chemical_formula_sum   'Sr1 Re1 Hg2'
_cell_volume   88.41
_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
  Sr  Sr3  1  0.0  0.0  0.0  1.0
  Re  Re2  1  0.0  0.0  0.23  1.0
  Hg  Hg0  1  0.0  0.0  0.38  1.0
  Hg  Hg1  1  0.0  0.0  0.08  1.0

data_SrReHg2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.49
_cell_length_b   3.17
_cell_length_c   10.32
_cell_angle_alpha   90.0
_cell_angle_beta   100.22
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrReHg2
_chemical_formula_sum   'Sr2 Re2 Hg4'
_cell_volume   176.82
_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
  Sr  Sr0  2  0.0  0.0  0.0  1.0
  Re  Re1  2  -0.0  0.0  0.77  1.0
  Hg  Hg2  2  -0.0  0.0  0.62  1.0
  Hg  Hg3  2  -0.0  0.0  0.92  1.0

Sr Re Hg Hg
Sr Re Hg Hg 0 3 o o o 1 3 o o o 1 2 o o o 
SrReHg2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrReHg2 clusters. Sr(1) is bonded in a single-bond geometry to one Hg(2) atom. The Sr(1)-Hg(2) bond length is 0.84 Å. Re(1) is bonded in a linear geometry to one Hg(1) and one Hg(2) atom. The Re(1)-Hg(1) bond length is 1.56 Å. The Re(1)-Hg(2) bond length is 1.56 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a single-bond geometry to one Re(1) atom. In the second Hg site, Hg(2) is bonded in a distorted single-bond geometry to one Sr(1) and one Re(1) atom.