data_SrAgAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.1
_cell_length_b   5.1
_cell_length_c   5.1
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrAgAu2
_chemical_formula_sum   'Sr1 Ag1 Au2'
_cell_volume   93.97
_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
  Ag  Ag0  1  0.61  0.61  0.61  1.0
  Au  Au1  1  0.41  0.41  0.41  1.0
  Au  Au2  1  0.8  0.8  0.8  1.0

data_SrAgAu2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.1
_cell_length_b   5.1
_cell_length_c   12.5
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrAgAu2
_chemical_formula_sum   'Sr3 Ag3 Au6'
_cell_volume   281.9
_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
  Sr  Sr0  3  0.0  0.0  0.0  1.0
  Ag  Ag1  3  0.0  0.0  0.39  1.0
  Au  Au2  3  0.0  0.0  0.2  1.0
  Au  Au3  3  0.0  0.0  0.59  1.0

Sr Ag Au Au
SrAu2Ag crystallizes in the trigonal R3m space group. Sr(1) is bonded in a 1-coordinate geometry to one Au(2), three equivalent Au(1), and three equivalent Ag(1) atoms. The Sr(1)-Au(2) bond length is 2.45 Å. All Sr(1)-Au(1) bond lengths are 3.11 Å. All Sr(1)-Ag(1) bond lengths are 3.03 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to three equivalent Sr(1) and one Ag(1) atom to form distorted corner-sharing AuSr3Ag tetrahedra. The Au(1)-Ag(1) bond length is 2.45 Å. In the second Au site, Au(2) is bonded in a distorted linear geometry to one Sr(1) and one Ag(1) atom. The Au(2)-Ag(1) bond length is 2.45 Å. Ag(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Au(1), and one Au(2) atom.