data_SiAg2Au
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   2.85
_cell_angle_alpha   91.66
_cell_angle_beta   91.66
_cell_angle_gamma   115.77
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAg2Au
_chemical_formula_sum   'Si1 Ag2 Au1'
_cell_volume   69.9
_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  Si3  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.31  0.21  0.42  1.0
  Ag  Ag1  1  0.31  0.79  0.42  1.0
  Au  Au2  1  0.78  0.0  0.0  1.0

data_SiAg2Au
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.85
_cell_length_b   5.23
_cell_length_c   5.23
_cell_angle_alpha   115.77
_cell_angle_beta   91.66
_cell_angle_gamma   91.66
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAg2Au
_chemical_formula_sum   'Si1 Ag2 Au1'
_cell_volume   69.9
_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  Si0  1  0.0  0.0  0.0  1.0
  Ag  Ag1  1  0.42  0.31  0.21  1.0
  Ag  Ag2  1  0.42  0.31  0.79  1.0
  Au  Au3  1  0.0  0.78  0.0  1.0

Si Ag Ag Au
Si Ag Ag Au 0 3 - o o 0 1 o o o 0 1 o o - 0 2 o - o 0 2 o - - 1 2 o - o 1 2 o o o 2 3 o + o 2 3 o + + 2 2 o o + 
AuAg2Si crystallizes in the triclinic P1 space group. Au(1) is bonded in a distorted single-bond geometry to two equivalent Ag(2) and one Si(1) atom. There is one shorter (2.55 Å) and one longer (2.68 Å) Au(1)-Ag(2) bond length. The Au(1)-Si(1) bond length is 1.16 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 1-coordinate geometry to two equivalent Ag(2) and one Si(1) atom. There is one shorter (2.23 Å) and one longer (3.00 Å) Ag(1)-Ag(2) bond length. The Ag(1)-Si(1) bond length is 1.89 Å. In the second Ag site, Ag(2) is bonded in a 8-coordinate geometry to two equivalent Au(1), two equivalent Ag(1), two equivalent Ag(2), and two equivalent Si(1) atoms. Both Ag(2)-Ag(2) bond lengths are 2.85 Å. There is one shorter (2.62 Å) and one longer (2.87 Å) Ag(2)-Si(1) bond length. Si(1) is bonded in a distorted single-bond geometry to one Au(1), one Ag(1), and two equivalent Ag(2) atoms.