data_Ta2Mn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.78
_cell_length_b   6.56
_cell_length_c   2.83
_cell_angle_alpha   81.98
_cell_angle_beta   73.58
_cell_angle_gamma   24.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2Mn
_chemical_formula_sum   'Ta2 Mn1'
_cell_volume   47.71
_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  0.61  0.33  0.39  1.0
  Ta  Ta2  1  0.61  0.33  0.34  1.0
  Mn  Mn0  1  0.0  0.0  0.0  1.0

data_Ta2Mn
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.83
_cell_length_b   2.83
_cell_length_c   6.56
_cell_angle_alpha   98.02
_cell_angle_beta   98.02
_cell_angle_gamma   110.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2Mn
_chemical_formula_sum   'Ta2 Mn1'
_cell_volume   47.71
_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  Ta0  1  0.61  0.61  0.94  1.0
  Ta  Ta1  1  0.61  0.66  0.94  1.0
  Mn  Mn2  1  0.0  0.0  0.0  1.0

Ta Ta Mn
Ta Ta Mn 0 1 o o o 0 2 + o o 1 2 + o o 
Ta2Mn crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Ta2Mn cluster. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a single-bond geometry to one Ta(2) atom. The Ta(1)-Ta(2) bond length is 0.12 Å. In the second Ta site, Ta(2) is bonded in a 2-coordinate geometry to one Ta(1) and one Mn(1) atom. The Ta(2)-Mn(1) bond length is 1.16 Å. Mn(1) is bonded in a 1-coordinate geometry to one Ta(2) atom.