data_YSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   6.32
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YSn
_chemical_formula_sum   'Y2 Sn2'
_cell_volume   122.72
_cell_formula_units_Z   2
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
  Y  Y2  1  0.37  0.37  0.74  1.0
  Y  Y3  1  0.0  0.73  0.58  1.0
  Sn  Sn0  1  0.0  0.0  0.16  1.0
  Sn  Sn1  1  0.0  0.0  0.0  1.0

data_YSn
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   6.32
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YSn
_chemical_formula_sum   'Y2 Sn2'
_cell_volume   122.72
_cell_formula_units_Z   2
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
  Y  Y0  1  0.0  0.73  0.58  1.0
  Y  Y1  1  0.37  0.37  0.74  1.0
  Sn  Sn2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.16  1.0

Y Y Sn Sn
SnY crystallizes in the triclinic P1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted single-bond geometry to three equivalent Y(2) and two equivalent Sn(2) atoms. There are two shorter (2.80 Å) and one longer (3.18 Å) Y(1)-Y(2) bond length. There is one shorter (2.38 Å) and one longer (3.41 Å) Y(1)-Sn(2) bond length. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to three equivalent Y(1), one Sn(1), and one Sn(2) atom. The Y(2)-Sn(1) bond length is 2.94 Å. The Y(2)-Sn(2) bond length is 2.94 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a bent 150 degrees geometry to one Y(2) and one Sn(2) atom. The Sn(1)-Sn(2) bond length is 1.03 Å. In the second Sn site, Sn(2) is bonded in a 4-coordinate geometry to one Y(2), two equivalent Y(1), and one Sn(1) atom.