data_SrCu2Au
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.35
_cell_length_b   4.35
_cell_length_c   4.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCu2Au
_chemical_formula_sum   'Sr1 Cu2 Au1'
_cell_volume   79.15
_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
  Cu  Cu1  1  0.17  0.0  0.1  1.0
  Cu  Cu2  1  0.0  0.17  0.1  1.0
  Au  Au0  1  0.17  0.17  0.0  1.0

data_SrCu2Au
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.15
_cell_length_b   6.15
_cell_length_c   4.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrCu2Au
_chemical_formula_sum   'Sr2 Cu4 Au2'
_cell_volume   158.29
_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
  Sr  Sr0  2  0.0  0.0  0.0  1.0
  Cu  Cu1  4  0.09  0.09  0.1  1.0
  Au  Au2  2  0.17  0.0  -0.0  1.0

Sr Cu Cu Au
SrAuCu2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrAuCu2 clusters. Sr(1) is bonded in a 3-coordinate geometry to one Au(1) and two equivalent Cu(1) atoms. The Sr(1)-Au(1) bond length is 1.06 Å. Both Sr(1)-Cu(1) bond lengths are 0.85 Å. Au(1) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Cu(1) atoms. Both Au(1)-Cu(1) bond lengths are 0.85 Å. Cu(1) is bonded in a distorted L-shaped geometry to one Sr(1) and one Au(1) atom.