data_V2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.93
_cell_length_b   5.93
_cell_length_c   5.31
_cell_angle_alpha   104.82
_cell_angle_beta   104.82
_cell_angle_gamma   25.01
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V2Ni
_chemical_formula_sum   'V4 Ni2'
_cell_volume   76.3
_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  V2  1  0.0  0.0  0.0  1.0
  V  V3  1  0.42  0.0  0.63  1.0
  V  V4  1  0.3  0.0  0.56  1.0
  V  V5  1  0.78  0.0  0.5  1.0
  Ni  Ni0  1  0.55  0.0  0.28  1.0
  Ni  Ni1  1  0.65  0.0  0.85  1.0

data_V2Ni
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.57
_cell_length_b   5.31
_cell_length_c   5.93
_cell_angle_alpha   104.82
_cell_angle_beta   102.5
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V2Ni
_chemical_formula_sum   'V4 Ni2'
_cell_volume   76.3
_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  V0  1  0.0  0.0  0.0  1.0
  V  V1  1  0.0  0.5  0.78  1.0
  V  V2  1  0.0  0.56  0.3  1.0
  V  V3  1  0.0  0.63  0.42  1.0
  Ni  Ni4  1  0.0  0.28  0.55  1.0
  Ni  Ni5  1  0.0  0.85  0.65  1.0

V V V V Ni Ni
V2Ni crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one V2Ni cluster. There are four inequivalent V sites. In the first V site, V(1) is bonded in a single-bond geometry to one Ni(2) atom. The V(1)-Ni(2) bond length is 2.04 Å. In the second V site, V(2) is bonded in a 2-coordinate geometry to one V(3) and one Ni(2) atom. The V(2)-V(3) bond length is 0.67 Å. The V(2)-Ni(2) bond length is 1.55 Å. In the third V site, V(3) is bonded in a single-bond geometry to one V(2) atom. In the fourth V site, V(4) is bonded in a distorted single-bond geometry to one Ni(1) and one Ni(2) atom. The V(4)-Ni(1) bond length is 1.55 Å. The V(4)-Ni(2) bond length is 2.18 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a distorted single-bond geometry to one V(4) atom. In the second Ni site, Ni(2) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(4) atom.