data_VNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.23
_cell_length_b   6.81
_cell_length_c   3.02
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VNi2
_chemical_formula_sum   'V2 Ni4'
_cell_volume   66.39
_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  V4  1  0.0  0.0  0.0  1.0
  V  V5  1  0.61  0.41  0.51  1.0
  Ni  Ni0  1  0.18  0.26  0.0  1.0
  Ni  Ni1  1  0.44  0.67  0.51  1.0
  Ni  Ni2  1  0.79  0.14  0.51  1.0
  Ni  Ni3  1  0.05  0.55  0.0  1.0

data_VNi2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.23
_cell_length_b   3.02
_cell_length_c   6.81
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   VNi2
_chemical_formula_sum   'V2 Ni4'
_cell_volume   66.39
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  0.61  0.5  0.41  1.0
  Ni  Ni2  1  0.05  0.0  0.55  1.0
  Ni  Ni3  1  0.18  0.0  0.26  1.0
  Ni  Ni4  1  0.44  0.5  0.67  1.0
  Ni  Ni5  1  0.79  0.5  0.14  1.0

V V Ni Ni Ni Ni
Ni2V crystallizes in the triclinic P1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 3-coordinate geometry to one Ni(1), one Ni(4), and two equivalent Ni(3) atoms. The V(1)-Ni(1) bond length is 1.88 Å. The V(1)-Ni(4) bond length is 3.09 Å. There is one shorter (1.89 Å) and one longer (1.95 Å) V(1)-Ni(3) bond length. In the second V site, V(2) is bonded in a 6-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(1), and four equivalent Ni(4) atoms. The V(2)-Ni(2) bond length is 1.88 Å. The V(2)-Ni(3) bond length is 1.88 Å. There is one shorter (2.26 Å) and one longer (2.30 Å) V(2)-Ni(1) bond length. There are a spread of V(2)-Ni(4) bond distances ranging from 2.26-2.57 Å. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 1-coordinate geometry to one V(1), two equivalent V(2), and one Ni(4) atom. The Ni(1)-Ni(4) bond length is 1.97 Å. In the second Ni site, Ni(2) is bonded in a distorted single-bond geometry to one V(2) and four equivalent Ni(4) atoms. There are a spread of Ni(2)-Ni(4) bond distances ranging from 2.11-2.64 Å. In the third Ni site, Ni(3) is bonded in a 3-coordinate geometry to one V(2) and two equivalent V(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one V(1), four equivalent V(2), one Ni(1), and four equivalent Ni(2) atoms.