data_Be2SiAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.31
_cell_length_b   4.31
_cell_length_c   2.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   109.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SiAu
_chemical_formula_sum   'Be2 Si1 Au1'
_cell_volume   50.22
_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  Be1  1  0.25  0.24  0.43  1.0
  Be  Be2  1  0.25  0.76  0.43  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Au  Au0  1  0.49  0.0  0.0  1.0

data_Be2SiAu
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.87
_cell_length_b   4.31
_cell_length_c   4.31
_cell_angle_alpha   109.24
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SiAu
_chemical_formula_sum   'Be2 Si1 Au1'
_cell_volume   50.22
_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  Be0  1  0.43  0.25  0.24  1.0
  Be  Be1  1  0.43  0.25  0.76  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Au  Au3  1  0.0  0.49  0.0  1.0

Be Be Si Au
Be2AuSi crystallizes in the triclinic P1 space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a 6-coordinate geometry to two equivalent Be(2), two equivalent Au(1), and two equivalent Si(1) atoms. There is one shorter (2.10 Å) and one longer (2.21 Å) Be(1)-Be(2) bond length. There is one shorter (2.12 Å) and one longer (2.37 Å) Be(1)-Au(1) bond length. There is one shorter (1.74 Å) and one longer (2.03 Å) Be(1)-Si(1) bond length. In the second Be site, Be(2) is bonded in a 2-coordinate geometry to two equivalent Be(1), two equivalent Au(1), and two equivalent Si(1) atoms. There is one shorter (1.74 Å) and one longer (2.03 Å) Be(2)-Au(1) bond length. There is one shorter (2.12 Å) and one longer (2.37 Å) Be(2)-Si(1) bond length. Au(1) is bonded in a 6-coordinate geometry to two equivalent Be(1), two equivalent Be(2), and two equivalent Si(1) atoms. There is one shorter (2.13 Å) and one longer (2.18 Å) Au(1)-Si(1) bond length. Si(1) is bonded in a 6-coordinate geometry to two equivalent Be(1), two equivalent Be(2), and two equivalent Au(1) atoms.