data_NaSi2Au
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.98
_cell_length_b   5.98
_cell_length_c   5.98
_cell_angle_alpha   143.44
_cell_angle_beta   138.47
_cell_angle_gamma   56.51
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSi2Au
_chemical_formula_sum   'Na1 Si2 Au1'
_cell_volume   83.95
_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
  Na  Na1  1  0.0  0.0  0.24  1.0
  Si  Si2  1  0.0  0.12  0.09  1.0
  Si  Si3  1  0.0  0.0  0.83  1.0
  Au  Au0  1  0.88  0.0  0.92  1.0

data_NaSi2Au
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.75
_cell_length_b   4.24
_cell_length_c   5.98
_cell_angle_alpha   110.76
_cell_angle_beta   108.28
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSi2Au
_chemical_formula_sum   'Na1 Si2 Au1'
_cell_volume   83.95
_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
  Na  Na0  1  0.0  0.24  0.24  1.0
  Si  Si1  1  0.0  0.83  0.83  1.0
  Si  Si2  1  0.88  0.97  0.97  1.0
  Au  Au3  1  0.0  0.92  0.04  1.0

Na Si Si Au
NaAuSi2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one NaAuSi2 cluster. Na(1) is bonded in a 2-coordinate geometry to one Au(1) and one Si(1) atom. The Na(1)-Au(1) bond length is 1.47 Å. The Na(1)-Si(1) bond length is 1.56 Å. Au(1) is bonded in a distorted single-bond geometry to one Na(1), one Si(1), and one Si(2) atom. The Au(1)-Si(1) bond length is 0.62 Å. The Au(1)-Si(2) bond length is 1.17 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a single-bond geometry to one Na(1), one Au(1), and one Si(2) atom. The Si(1)-Si(2) bond length is 1.05 Å. In the second Si site, Si(2) is bonded in a 2-coordinate geometry to one Au(1) and one Si(1) atom.