data_Ta2AlV
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.31
_cell_length_b   3.31
_cell_length_c   6.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2AlV
_chemical_formula_sum   'Ta2 Al1 V1'
_cell_volume   65.75
_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
  Ta  Ta1  1  0.65  0.65  0.99  1.0
  Ta  Ta2  1  0.0  0.0  0.57  1.0
  Al  Al0  1  0.0  0.0  0.43  1.0
  V  V3  1  0.65  0.65  0.03  1.0

data_Ta2AlV
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.68
_cell_length_b   4.68
_cell_length_c   6.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ta2AlV
_chemical_formula_sum   'Ta4 Al2 V2'
_cell_volume   131.5
_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
  Ta  Ta0  2  0.0  0.0  0.57  1.0
  Ta  Ta1  2  0.15  0.5  0.99  1.0
  Al  Al2  2  0.0  0.0  0.43  1.0
  V  V3  2  0.15  0.5  0.03  1.0

Ta Ta Al V
TaVTaAl is beta oxygen-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two tantalum;vanadium molecules and two TaAl clusters. In each TaAl cluster, Ta(2) is bonded in a single-bond geometry to one Al(1) atom. The Ta(2)-Al(1) bond length is 0.85 Å. Al(1) is bonded in a single-bond geometry to one Ta(2) atom.