data_Ta2MnGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.51
_cell_length_b   8.51
_cell_length_c   8.51
_cell_angle_alpha   20.29
_cell_angle_beta   20.29
_cell_angle_gamma   20.29
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2MnGa
_chemical_formula_sum   'Ta2 Mn1 Ga1'
_cell_volume   64.92
_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  Ta2  1  0.0  0.0  0.57  1.0
  Ta  Ta3  1  0.0  0.0  0.43  1.0
  Mn  Mn1  1  0.0  0.0  0.0  1.0
  Ga  Ga0  1  0.0  0.0  0.5  1.0

data_Ta2MnGa
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   5.19
_cell_length_b   3.0
_cell_length_c   8.51
_cell_angle_alpha   90.0
_cell_angle_beta   101.74
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   Ta2MnGa
_chemical_formula_sum   'Ta4 Mn2 Ga2'
_cell_volume   129.83
_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, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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  4  0.0  0.0  0.43  1.0
  Mn  Mn1  2  0.0  0.0  0.0  1.0
  Ga  Ga2  2  0.0  0.0  0.5  1.0

Ta Ta Mn Ga
Ta2MnGa crystallizes in the monoclinic Cm space group. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a single-bond geometry to one Mn(1) and one Ga(1) atom. The Ta(1)-Mn(1) bond length is 3.66 Å. The Ta(1)-Ga(1) bond length is 0.58 Å. In the second Ta site, Ta(2) is bonded in a single-bond geometry to one Mn(1) and one Ga(1) atom. The Ta(2)-Mn(1) bond length is 3.68 Å. The Ta(2)-Ga(1) bond length is 0.58 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one Ta(1); one Ta(2); and six Mn(1,1) atoms to form a mixture of corner and edge-sharing MnTa2Mn6 hexagonal bipyramids. All Mn(1)-Mn(1,1) bond lengths are 3.00 Å. In the second Mn site, Mn(1) is bonded to one Ta(1); one Ta(2); and six Mn(1,1) atoms to form a mixture of corner and edge-sharing MnTa2Mn6 hexagonal bipyramids. The Mn(1)-Ta(1) bond length is 3.66 Å. The Mn(1)-Ta(2) bond length is 3.68 Å. Both Mn(1)-Mn(1) bond lengths are 3.00 Å. Ga(1) is bonded in a linear geometry to one Ta(1) and one Ta(2) atom.