data_Ta
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.9
_cell_length_b   2.9
_cell_length_c   5.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta
_chemical_formula_sum   Ta2
_cell_volume   37.46
_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
  Ta  Ta0  1  0.0  0.67  0.29  1.0
  Ta  Ta1  1  0.45  0.84  0.86  1.0

data_Ta
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.9
_cell_length_b   2.9
_cell_length_c   5.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Ta
_chemical_formula_sum   Ta2
_cell_volume   37.46
_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
  Ta  Ta0  2  0.23  0.58  0.79  1.0

Ta Ta
Ta is Magnesium structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one Ta cluster. Ta(1) is bonded in a 1-coordinate geometry to one Ta(1) atom. The Ta(1)-Ta(1) bond length is 2.49 Å.