data_VNi2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.69
_cell_length_b   8.69
_cell_length_c   8.69
_cell_angle_alpha   17.59
_cell_angle_beta   17.59
_cell_angle_gamma   17.59
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VNi2W
_chemical_formula_sum   'V1 Ni2 W1'
_cell_volume   52.22
_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  V2  1  0.0  0.0  0.0  1.0
  Ni  Ni0  1  0.0  0.0  0.17  1.0
  Ni  Ni1  1  0.0  0.0  0.48  1.0
  W  W3  1  0.0  0.0  0.82  1.0

data_VNi2W
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.6
_cell_length_b   2.66
_cell_length_c   8.69
_cell_angle_alpha   90.0
_cell_angle_beta   100.17
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   VNi2W
_chemical_formula_sum   'V2 Ni4 W2'
_cell_volume   104.43
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.0  1.0
  Ni  Ni1  2  -0.0  0.0  0.83  1.0
  Ni  Ni2  2  0.0  0.0  0.52  1.0
  W  W3  2  0.0  0.0  0.18  1.0

V Ni Ni W
VWNi2 crystallizes in the monoclinic Cm space group. V(1) is bonded in a linear geometry to one W(1) and one Ni(1) atom. The V(1)-W(1) bond length is 1.53 Å. The V(1)-Ni(1) bond length is 1.47 Å. W(1) is bonded in a single-bond geometry to one V(1) and one Ni(2) atom. The W(1)-Ni(2) bond length is 3.00 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a single-bond geometry to one V(1) and one Ni(2) atom. The Ni(1)-Ni(2) bond length is 2.68 Å. In the second Ni site, Ni(2) is bonded to one W(1), one Ni(1), and six equivalent Ni(2) atoms to form a mixture of distorted corner and edge-sharing NiNi7W hexagonal bipyramids. All Ni(2)-Ni(2) bond lengths are 2.66 Å.