data_BeSiAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.26
_cell_length_b   8.26
_cell_length_c   8.26
_cell_angle_alpha   20.64
_cell_angle_beta   20.64
_cell_angle_gamma   20.64
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeSiAu2
_chemical_formula_sum   'Be1 Si1 Au2'
_cell_volume   61.4
_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
  Be  Be2  1  0.0  0.0  0.0  1.0
  Si  Si3  1  0.0  0.0  0.13  1.0
  Au  Au0  1  0.0  0.0  0.98  1.0
  Au  Au1  1  0.0  0.0  0.28  1.0

data_BeSiAu2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.13
_cell_length_b   2.96
_cell_length_c   8.26
_cell_angle_alpha   90.0
_cell_angle_beta   101.94
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BeSiAu2
_chemical_formula_sum   'Be2 Si2 Au4'
_cell_volume   122.8
_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
  Be  Be0  2  0.0  0.0  0.0  1.0
  Si  Si1  2  0.0  0.0  0.87  1.0
  Au  Au2  2  0.0  0.0  0.72  1.0
  Au  Au3  2  0.0  0.0  0.02  1.0

Be Si Au Au
Be Si Au Au 0 2 o o - 0 1 o o o 1 2 o o - 1 3 o o o 
BeAu2Si is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeAu2Si clusters. Be(1) is bonded in a distorted single-bond geometry to one Au(1) and one Si(1) atom. The Be(1)-Au(1) bond length is 0.19 Å. The Be(1)-Si(1) bond length is 1.06 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a single-bond geometry to one Be(1) atom. In the second Au site, Au(2) is bonded in a single-bond geometry to one Si(1) atom. The Au(2)-Si(1) bond length is 1.25 Å. Si(1) is bonded in a linear geometry to one Be(1) and one Au(2) atom.