data_Sn3Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.28
_cell_length_b   6.28
_cell_length_c   6.28
_cell_angle_alpha   142.82
_cell_angle_beta   131.04
_cell_angle_gamma   63.05
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn3Sb
_chemical_formula_sum   'Sn3 Sb1'
_cell_volume   111.7
_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
  Sn  Sn1  1  0.0  0.0  0.86  1.0
  Sn  Sn2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.6  0.5  1.0
  Sb  Sb0  1  0.0  0.0  0.36  1.0

data_Sn3Sb
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.01
_cell_length_b   5.21
_cell_length_c   6.28
_cell_angle_alpha   114.48
_cell_angle_beta   108.59
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn3Sb
_chemical_formula_sum   'Sn3 Sb1'
_cell_volume   111.7
_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
  Sn  Sn0  1  0.0  0.0  0.0  1.0
  Sn  Sn1  1  0.15  0.14  0.15  1.0
  Sn  Sn2  1  0.5  0.1  0.1  1.0
  Sb  Sb3  1  0.64  0.64  0.64  1.0

Sn Sn Sn Sb
Sn3Sb is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Sn3Sb cluster. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 2-coordinate geometry to one Sn(2) and one Sn(3) atom. The Sn(1)-Sn(2) bond length is 0.92 Å. The Sn(1)-Sn(3) bond length is 1.52 Å. In the second Sn site, Sn(2) is bonded in a 1-coordinate geometry to one Sn(1) and one Sb(1) atom. The Sn(2)-Sb(1) bond length is 2.23 Å. In the third Sn site, Sn(3) is bonded in a 1-coordinate geometry to one Sn(1) atom. Sb(1) is bonded in a distorted single-bond geometry to one Sn(2) atom.