data_YCuAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.43
_cell_length_b   4.43
_cell_length_c   4.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCuAu2
_chemical_formula_sum   'Y1 Cu1 Au2'
_cell_volume   78.74
_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
  Y  Y3  1  0.22  0.22  0.0  1.0
  Cu  Cu2  1  0.0  0.0  0.0  1.0
  Au  Au0  1  0.22  0.0  0.0  1.0
  Au  Au1  1  0.0  0.22  0.0  1.0

data_YCuAu2
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   4.01
_cell_length_b   6.27
_cell_length_c   6.27
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   YCuAu2
_chemical_formula_sum   'Y2 Cu2 Au4'
_cell_volume   157.48
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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
  Y  Y0  2  0.0  0.0  0.22  1.0
  Cu  Cu1  2  0.0  0.0  0.0  1.0
  Au  Au2  4  0.0  0.11  0.11  1.0

Y Cu Au Au
Y Cu Au Au 0 3 o o o 0 2 o o o 1 3 o o o 1 2 o o o 
YAu2Cu is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two YAu2Cu clusters. Y(1) is bonded in an L-shaped geometry to two equivalent Au(1) atoms. Both Y(1)-Au(1) bond lengths are 0.96 Å. Au(1) is bonded in an L-shaped geometry to one Y(1) and one Cu(1) atom. The Au(1)-Cu(1) bond length is 0.96 Å. Cu(1) is bonded in an L-shaped geometry to two equivalent Au(1) atoms.