data_SrSn2Au
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   4.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.73
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrSn2Au
_chemical_formula_sum   'Sr1 Sn2 Au1'
_cell_volume   104.87
_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
  Sn  Sn1  1  0.66  0.32  0.35  1.0
  Sn  Sn2  1  0.66  0.68  0.35  1.0
  Au  Au0  1  0.32  0.0  0.0  1.0

data_SrSn2Au
_symmetry_space_group_name_H-M   Pm
_cell_length_a   4.69
_cell_length_b   4.73
_cell_length_c   4.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   SrSn2Au
_chemical_formula_sum   'Sr1 Sn2 Au1'
_cell_volume   104.87
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  Sr0  1  0.0  0.0  0.0  1.0
  Sn  Sn1  2  0.35  0.32  0.66  1.0
  Au  Au2  1  0.0  0.0  0.32  1.0

Sr Sn Sn Au
SrAuSn2 crystallizes in the monoclinic Pm space group. Sr(1) is bonded in a distorted single-bond geometry to one Au(1) and four equivalent Sn(1) atoms. The Sr(1)-Au(1) bond length is 1.52 Å. There are two shorter (2.74 Å) and two longer (3.77 Å) Sr(1)-Sn(1) bond lengths. Au(1) is bonded in a distorted single-bond geometry to one Sr(1) and two equivalent Sn(1) atoms. Both Au(1)-Sn(1) bond lengths are 2.74 Å. Sn(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Au(1), and two equivalent Sn(1) atoms. There is one shorter (1.72 Å) and one longer (3.01 Å) Sn(1)-Sn(1) bond length.