data_CaHgMoRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   4.73
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaHgMoRu
_chemical_formula_sum   'Ca1 Hg1 Mo1 Ru1'
_cell_volume   74.95
_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
  Ca  Ca0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.35  0.35  0.35  1.0
  Mo  Mo2  1  0.67  0.67  0.67  1.0
  Ru  Ru3  1  0.02  0.02  0.02  1.0

data_CaHgMoRu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   11.59
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   CaHgMoRu
_chemical_formula_sum   'Ca3 Hg3 Mo3 Ru3'
_cell_volume   224.86
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Ca  Ca0  3  0.0  0.0  0.0  1.0
  Hg  Hg1  3  0.0  0.0  0.65  1.0
  Mo  Mo2  3  0.0  0.0  0.33  1.0
  Ru  Ru3  3  0.0  0.0  0.98  1.0

Ca Hg Mo Ru
Ca Hg Mo Ru 0 3 o o o 0 1 o o - 0 1 o - o 0 1 - o o 0 2 o - - 0 2 - o - 0 2 - - o 1 3 o o + 1 3 o + o 1 3 + o o 1 2 - o o 1 2 o - o 1 2 o o - 2 3 o + + 2 3 + o + 2 3 + + o 
CaMoRuHg crystallizes in the trigonal R3m space group. Ca(1) is bonded in a single-bond geometry to four equivalent Mo(1), one Ru(1), and three equivalent Hg(1) atoms. There are three shorter (2.73 Å) and one longer (3.79 Å) Ca(1)-Mo(1) bond length. The Ca(1)-Ru(1) bond length is 0.23 Å. All Ca(1)-Hg(1) bond lengths are 2.74 Å. Mo(1) is bonded to four equivalent Ca(1), three equivalent Ru(1), and three equivalent Hg(1) atoms to form a mixture of distorted face and corner-sharing MoCa4Hg3Ru3 hexagonal pyramids. All Mo(1)-Ru(1) bond lengths are 2.74 Å. All Mo(1)-Hg(1) bond lengths are 2.73 Å. Ru(1) is bonded in a single-bond geometry to one Ca(1), three equivalent Mo(1), and three equivalent Hg(1) atoms. All Ru(1)-Hg(1) bond lengths are 2.73 Å. Hg(1) is bonded in a distorted q6 geometry to three equivalent Ca(1), three equivalent Mo(1), and three equivalent Ru(1) atoms.