data_SiAgAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.39
_cell_length_b   4.39
_cell_length_c   4.39
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAgAu
_chemical_formula_sum   'Si1 Ag1 Au1'
_cell_volume   59.65
_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
  Si  Si2  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.1  0.1  0.1  1.0
  Au  Au1  1  0.55  0.55  0.55  1.0

data_SiAgAu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.39
_cell_length_b   4.39
_cell_length_c   10.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SiAgAu
_chemical_formula_sum   'Si3 Ag3 Au3'
_cell_volume   178.96
_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
  Si  Si0  3  0.0  0.0  0.0  1.0
  Ag  Ag1  3  0.0  0.0  0.9  1.0
  Au  Au2  3  0.0  0.0  0.45  1.0

Si Ag Au
AuAgSi crystallizes in the trigonal R3m space group. Au(1) is bonded to three equivalent Ag(1) and three equivalent Si(1) atoms to form distorted AuSi3Ag3 octahedra that share corners with three equivalent Ag(1)SiAu3 tetrahedra, corners with three equivalent Si(1)AgAu3 tetrahedra, and edges with six equivalent Au(1)Si3Ag3 octahedra. All Au(1)-Ag(1) bond lengths are 2.82 Å. All Au(1)-Si(1) bond lengths are 2.82 Å. Ag(1) is bonded to three equivalent Au(1) and one Si(1) atom to form distorted AgSiAu3 tetrahedra that share corners with three equivalent Au(1)Si3Ag3 octahedra, corners with three equivalent Si(1)AgAu3 tetrahedra, corners with six equivalent Ag(1)SiAu3 tetrahedra, and edges with three equivalent Si(1)AgAu3 tetrahedra. The corner-sharing octahedral tilt angles are 64°. The Ag(1)-Si(1) bond length is 1.09 Å. Si(1) is bonded to three equivalent Au(1) and one Ag(1) atom to form distorted SiAgAu3 tetrahedra that share corners with three equivalent Au(1)Si3Ag3 octahedra, corners with three equivalent Ag(1)SiAu3 tetrahedra, corners with six equivalent Si(1)AgAu3 tetrahedra, and edges with three equivalent Ag(1)SiAu3 tetrahedra. The corner-sharing octahedral tilt angles are 64°.