data_V2Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.89
_cell_length_b   6.89
_cell_length_c   6.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V2Bi
_chemical_formula_sum   'V8 Bi4'
_cell_volume   327.29
_cell_formula_units_Z   4
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  V4  1  0.78  0.23  0.11  1.0
  V  V5  1  0.11  0.66  0.78  1.0
  V  V6  1  0.11  0.78  0.23  1.0
  V  V7  1  0.78  0.11  0.66  1.0
  V  V8  1  0.66  0.66  0.66  1.0
  V  V9  1  0.23  0.23  0.23  1.0
  V  V10  1  0.23  0.11  0.78  1.0
  V  V11  1  0.66  0.78  0.11  1.0
  Bi  Bi0  1  0.45  0.0  0.45  1.0
  Bi  Bi1  1  0.45  0.45  0.0  1.0
  Bi  Bi2  1  0.0  0.45  0.45  1.0
  Bi  Bi3  1  0.0  0.0  0.0  1.0

data_V2Bi
_symmetry_space_group_name_H-M   R3
_cell_length_a   9.75
_cell_length_b   9.75
_cell_length_c   11.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   146
_chemical_formula_structural   V2Bi
_chemical_formula_sum   'V24 Bi12'
_cell_volume   981.86
_cell_formula_units_Z   12
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  0.07  0.81  0.04  1.0
  V  V1  9  0.15  0.41  0.52  1.0
  V  V2  3  0.0  0.0  0.23  1.0
  V  V3  3  0.0  0.0  0.66  1.0
  Bi  Bi4  9  0.04  0.52  0.96  1.0
  Bi  Bi5  3  0.0  0.0  0.0  1.0

V V V V V V V V Bi Bi Bi Bi
V2Bi crystallizes in the trigonal R3 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 3-coordinate geometry to one Bi(2) and two equivalent Bi(1) atoms. The V(1)-Bi(2) bond length is 2.30 Å. There is one shorter (2.86 Å) and one longer (3.14 Å) V(1)-Bi(1) bond length. In the second V site, V(2) is bonded in a 3-coordinate geometry to one V(3), one Bi(2), and two equivalent Bi(1) atoms. The V(2)-V(3) bond length is 3.18 Å. The V(2)-Bi(2) bond length is 2.86 Å. There is one shorter (2.86 Å) and one longer (3.14 Å) V(2)-Bi(1) bond length. In the third V site, V(3) is bonded in a 6-coordinate geometry to three equivalent V(2) and three equivalent Bi(1) atoms. All V(3)-Bi(1) bond lengths are 3.14 Å. In the fourth V site, V(4) is bonded in a tetrahedral geometry to one Bi(2) and three equivalent Bi(1) atoms. The V(4)-Bi(2) bond length is 2.71 Å. All V(4)-Bi(1) bond lengths are 2.64 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one V(3), one V(4), two equivalent V(1), and two equivalent V(2) atoms. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one V(4), three equivalent V(1), and three equivalent V(2) atoms.