data_VSn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.71
_cell_length_b   5.71
_cell_length_c   5.71
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VSn3
_chemical_formula_sum   'V2 Sn6'
_cell_volume   185.91
_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
  V  V6  1  0.85  0.85  0.85  1.0
  V  V7  1  0.0  0.0  0.0  1.0
  Sn  Sn0  1  0.43  0.0  0.85  1.0
  Sn  Sn1  1  0.28  0.0  0.85  1.0
  Sn  Sn2  1  0.85  0.43  0.0  1.0
  Sn  Sn3  1  0.85  0.28  0.0  1.0
  Sn  Sn4  1  0.0  0.85  0.28  1.0
  Sn  Sn5  1  0.0  0.85  0.43  1.0

data_VSn3
_symmetry_space_group_name_H-M   R3
_cell_length_a   8.07
_cell_length_b   8.07
_cell_length_c   9.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   146
_chemical_formula_structural   VSn3
_chemical_formula_sum   'V6 Sn18'
_cell_volume   557.73
_cell_formula_units_Z   6
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  'x+1/3, y+2/3, z+2/3'
  5  '-y+1/3, x-y+2/3, z+2/3'
  6  '-x+y+1/3, -x+2/3, z+2/3'
  7  'x+2/3, y+1/3, z+1/3'
  8  '-y+2/3, x-y+1/3, z+1/3'
  9  '-x+y+2/3, -x+1/3, z+1/3'
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
  V  V0  3  0.0  0.0  0.0  1.0
  V  V1  3  0.0  0.0  0.85  1.0
  Sn  Sn2  9  0.0  0.57  0.43  1.0
  Sn  Sn3  9  0.14  0.71  0.71  1.0

V V Sn Sn Sn Sn Sn Sn
VSn3 crystallizes in the trigonal R3 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a distorted tetrahedral geometry to one V(2) and three equivalent Sn(1) atoms. The V(1)-V(2) bond length is 1.45 Å. All V(1)-Sn(1) bond lengths are 2.58 Å. In the second V site, V(2) is bonded in a tetrahedral geometry to one V(1) and three equivalent Sn(2) atoms. All V(2)-Sn(2) bond lengths are 1.81 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted bent 150 degrees geometry to one V(1) and one Sn(2) atom. The Sn(1)-Sn(2) bond length is 0.84 Å. In the second Sn site, Sn(2) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Sn(1) atom.