data_V2NiSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.34
_cell_length_b   3.34
_cell_length_c   5.38
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V2NiSn
_chemical_formula_sum   'V2 Ni1 Sn1'
_cell_volume   60.11
_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  0.67  0.67  0.31  1.0
  V  V3  1  0.67  0.67  0.07  1.0
  Ni  Ni0  1  0.0  0.0  0.0  1.0
  Sn  Sn1  1  0.0  0.0  0.69  1.0

data_V2NiSn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   5.38
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   V2NiSn
_chemical_formula_sum   'V4 Ni2 Sn2'
_cell_volume   120.22
_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  0.17  0.5  0.07  1.0
  V  V1  2  0.17  0.5  0.31  1.0
  Ni  Ni2  2  0.0  0.0  0.0  1.0
  Sn  Sn3  2  0.0  0.0  0.69  1.0

V V Ni Sn
V V Ni Sn 0 1 o o o 1 2 + + o 2 3 o o - 
V2NiSn crystallizes in the monoclinic Cm space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 2-coordinate geometry to one V(2) and one Sn(1) atom. The V(1)-V(2) bond length is 1.32 Å. The V(1)-Sn(1) bond length is 2.55 Å. In the second V site, V(2) is bonded in a 4-coordinate geometry to one V(1) and three equivalent Ni(1) atoms. There is one shorter (1.59 Å) and two longer (2.52 Å) V(2)-Ni(1) bond lengths. Ni(1) is bonded in a 4-coordinate geometry to three equivalent V(2) and one Sn(1) atom. The Ni(1)-Sn(1) bond length is 1.68 Å. Sn(1) is bonded in a 2-coordinate geometry to one V(1) and one Ni(1) atom.