data_ScAl2Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.25
_cell_length_b   4.25
_cell_length_c   4.15
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ScAl2Hg
_chemical_formula_sum   'Sc1 Al2 Hg1'
_cell_volume   74.85
_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
  Sc  Sc3  1  0.0  0.0  0.0  1.0
  Al  Al0  1  0.0  0.12  0.08  1.0
  Al  Al1  1  0.12  0.0  0.08  1.0
  Hg  Hg2  1  0.12  0.12  0.0  1.0

data_ScAl2Hg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.0
_cell_length_b   6.0
_cell_length_c   4.15
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ScAl2Hg
_chemical_formula_sum   'Sc2 Al4 Hg2'
_cell_volume   149.7
_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
  Sc  Sc0  2  0.0  0.0  0.0  1.0
  Al  Al1  4  0.06  0.06  0.08  1.0
  Hg  Hg2  2  0.12  0.0  0.0  1.0

Sc Al Al Hg
ScHgAl2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two ScHgAl2 clusters. Sc(1) is bonded in a 3-coordinate geometry to one Hg(1) and two equivalent Al(1) atoms. The Sc(1)-Hg(1) bond length is 0.74 Å. Both Sc(1)-Al(1) bond lengths are 0.61 Å. Hg(1) is bonded in a 3-coordinate geometry to one Sc(1) and two equivalent Al(1) atoms. Both Hg(1)-Al(1) bond lengths are 0.61 Å. Al(1) is bonded in a 2-coordinate geometry to one Sc(1) and one Hg(1) atom.