data_V6SiSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.84
_cell_length_b   4.84
_cell_length_c   4.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V6SiSn
_chemical_formula_sum   'V6 Si1 Sn1'
_cell_volume   113.57
_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
  V  V0  1  0.42  0.0  0.14  1.0
  V  V1  1  0.0  0.71  0.42  1.0
  V  V2  1  0.14  0.42  0.0  1.0
  V  V3  1  0.42  0.0  0.71  1.0
  V  V4  1  0.0  0.14  0.42  1.0
  V  V5  1  0.71  0.42  0.0  1.0
  Si  Si6  1  0.0  0.0  0.0  1.0
  Sn  Sn7  1  0.42  0.42  0.42  1.0

data_V6SiSn
_symmetry_space_group_name_H-M   R3
_cell_length_a   6.85
_cell_length_b   6.85
_cell_length_c   8.39
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   146
_chemical_formula_structural   V6SiSn
_chemical_formula_sum   'V18 Si3 Sn3'
_cell_volume   340.71
_cell_formula_units_Z   3
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  9  0.05  0.67  0.38  1.0
  V  V1  9  0.15  0.43  0.85  1.0
  Si  Si2  3  0.0  0.0  0.0  1.0
  Sn  Sn3  3  0.0  0.0  0.42  1.0

V V V V V V Si Sn
V V V V V V Si Sn 0 6 o o o 0 2 o o o 0 4 o o o 0 5 o o o 0 3 o o - 0 3 o o o 0 7 o o o 1 2 o o o 1 7 o o o 1 4 o o o 1 4 o + o 1 6 o + o 2 6 o o o 2 4 o o o 2 5 - o o 2 5 o o o 2 7 o o o 3 4 o o o 3 6 o o + 3 7 o o o 4 6 o o o 4 7 o o o 5 7 o o o 5 6 + o o 
V6SnSi crystallizes in the trigonal R3 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 3-coordinate geometry to one V(2), two equivalent Sn(1), and one Si(1) atom. The V(1)-V(2) bond length is 2.08 Å. There is one shorter (2.46 Å) and one longer (3.12 Å) V(1)-Sn(1) bond length. The V(1)-Si(1) bond length is 2.14 Å. In the second V site, V(2) is bonded in a 3-coordinate geometry to one V(1), two equivalent Sn(1), and one Si(1) atom. There is one shorter (2.46 Å) and one longer (3.12 Å) V(2)-Sn(1) bond length. The V(2)-Si(1) bond length is 2.49 Å. Sn(1) is bonded in a 12-coordinate geometry to six equivalent V(1) and six equivalent V(2) atoms. Si(1) is bonded in a 3-coordinate geometry to three equivalent V(1) and three equivalent V(2) atoms.