data_GaHgRu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.86
_cell_length_b   2.86
_cell_length_c   8.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaHgRu2
_chemical_formula_sum   'Ga1 Hg1 Ru2'
_cell_volume   66.85
_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
  Ga  Ga0  1  0.0  0.0  0.73  1.0
  Hg  Hg1  1  0.43  0.43  0.31  1.0
  Ru  Ru2  1  0.0  0.0  0.31  1.0
  Ru  Ru3  1  0.43  0.43  0.94  1.0

data_GaHgRu2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.04
_cell_length_b   4.04
_cell_length_c   8.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   GaHgRu2
_chemical_formula_sum   'Ga2 Hg2 Ru4'
_cell_volume   133.7
_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
  Ga  Ga0  2  0.0  0.0  0.73  1.0
  Hg  Hg1  2  0.43  0.0  0.31  1.0
  Ru  Ru2  2  0.0  0.0  0.31  1.0
  Ru  Ru3  2  0.43  0.0  0.94  1.0

Ga Hg Ru Ru
Ru2HgGa crystallizes in the monoclinic Cm space group. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a distorted square co-planar geometry to four equivalent Hg(1) and one Ga(1) atom. There are a spread of Ru(1)-Hg(1) bond distances ranging from 1.73-2.31 Å. The Ru(1)-Ga(1) bond length is 3.43 Å. In the second Ru site, Ru(2) is bonded in a 9-coordinate geometry to four equivalent Ru(2), one Hg(1), and four equivalent Ga(1) atoms. All Ru(2)-Ru(2) bond lengths are 2.86 Å. The Ru(2)-Hg(1) bond length is 3.03 Å. There are a spread of Ru(2)-Ga(1) bond distances ranging from 2.47-2.90 Å. Hg(1) is bonded in a 5-coordinate geometry to one Ru(2) and four equivalent Ru(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to one Ru(1), four equivalent Ru(2), and four equivalent Ga(1) atoms. All Ga(1)-Ga(1) bond lengths are 2.86 Å.