data_La2TaMn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.26
_cell_length_b   3.26
_cell_length_c   9.02
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2TaMn
_chemical_formula_sum   'La2 Ta1 Mn1'
_cell_volume   95.85
_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
  La  La0  1  0.0  0.0  0.57  1.0
  La  La1  1  0.63  0.63  0.87  1.0
  Ta  Ta3  1  0.63  0.63  0.14  1.0
  Mn  Mn2  1  0.0  0.0  0.97  1.0

data_La2TaMn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.61
_cell_length_b   4.61
_cell_length_c   9.02
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   La2TaMn
_chemical_formula_sum   'La4 Ta2 Mn2'
_cell_volume   191.69
_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
  La  La0  2  0.0  0.0  0.57  1.0
  La  La1  2  0.13  0.5  0.87  1.0
  Ta  Ta2  2  0.13  0.5  0.14  1.0
  Mn  Mn3  2  0.0  0.0  0.97  1.0

La La Ta Mn
La2TaMn crystallizes in the monoclinic Cm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 12-coordinate geometry to four equivalent La(1), four equivalent La(2), three equivalent Ta(1), and one Mn(1) atom. All La(1)-La(1) bond lengths are 3.26 Å. There are a spread of La(1)-La(2) bond distances ranging from 3.25-4.01 Å. There is one shorter (4.21 Å) and two longer (4.53 Å) La(1)-Ta(1) bond lengths. The La(1)-Mn(1) bond length is 3.59 Å. In the second La site, La(2) is bonded in a 1-coordinate geometry to four equivalent La(1), one Ta(1), and one Mn(1) atom. The La(2)-Ta(1) bond length is 2.40 Å. The La(2)-Mn(1) bond length is 1.90 Å. Ta(1) is bonded in a 2-coordinate geometry to one La(2), three equivalent La(1), and one Mn(1) atom. The Ta(1)-Mn(1) bond length is 2.32 Å. Mn(1) is bonded in a 1-coordinate geometry to one La(1), one La(2), and one Ta(1) atom.