The structure described by TbMn4Al8 crystallizes in the tetragonal I4/mmm space group. Tb(1) is bonded in a 20-coordinate geometry to eight equivalent Mn(1), four equivalent Al(1), and eight equivalent Al(2) atoms. Mn(1) is bonded to two equivalent Tb(1), two equivalent Mn(1), four equivalent Al(1), and four equivalent Al(2) atoms to form distorted MnTb2Mn2Al8 cuboctahedra that share corners with eight equivalent Al(2)Tb2Mn4Al6 cuboctahedra, corners with ten equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, edges with four equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, edges with four equivalent Al(2)Tb2Mn4Al6 cuboctahedra, faces with six equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, and faces with eight equivalent Al(2)Tb2Mn4Al6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Tb(1), four equivalent Mn(1), one Al(1), and four equivalent Al(2) atoms. In the second Al site, Al(2) is bonded to two equivalent Tb(1), four equivalent Mn(1), two equivalent Al(2), and four equivalent Al(1) atoms to form distorted AlTb2Mn4Al6 cuboctahedra that share corners with eight equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, corners with ten equivalent Al(2)Tb2Mn4Al6 cuboctahedra, edges with three equivalent Al(2)Tb2Mn4Al6 cuboctahedra, edges with four equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, faces with seven equivalent Al(2)Tb2Mn4Al6 cuboctahedra, and faces with eight equivalent Mn(1)Tb2Mn2Al8 cuboctahedra. is represented by the CIF card [CIF]
data_Tb(MnAl2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.151
_cell_length_b   6.727
_cell_length_c   6.727
_cell_angle_alpha   81.572
_cell_angle_beta   67.490
_cell_angle_gamma   67.490
_symmetry_Int_Tables_number   1
_cell_volume   198.934
_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
  Tb  Tb0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.000  0.000  0.500  1.0
  Mn  Mn2  1  0.500  0.000  0.500  1.0
  Mn  Mn3  1  0.500  0.500  0.000  1.0
  Mn  Mn4  1  0.000  0.500  0.000  1.0
  Al  Al5  1  0.000  0.337  0.663  1.0
  Al  Al6  1  0.000  0.663  0.337  1.0
  Al  Al7  1  0.663  0.337  0.337  1.0
  Al  Al8  1  0.337  0.663  0.663  1.0
  Al  Al9  1  0.500  0.775  0.225  1.0
  Al  Al10  1  0.500  0.225  0.775  1.0
  Al  Al11  1  0.725  0.775  0.775  1.0
  Al  Al12  1  0.275  0.225  0.225  1.0
[/CIF]
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The structure described by TbMn4Al8 crystallizes in the tetragonal I4/mmm space group. Tb(1) is bonded in a 20-coordinate geometry to eight equivalent Mn(1), four equivalent Al(1), and eight equivalent Al(2) atoms. Mn(1) is bonded to two equivalent Tb(1), two equivalent Mn(1), four equivalent Al(1), and four equivalent Al(2) atoms to form distorted MnTb2Mn2Al8 cuboctahedra that share corners with eight equivalent Al(2)Tb2Mn4Al6 cuboctahedra, corners with ten equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, edges with four equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, edges with four equivalent Al(2)Tb2Mn4Al6 cuboctahedra, faces with six equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, and faces with eight equivalent Al(2)Tb2Mn4Al6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Tb(1), four equivalent Mn(1), one Al(1), and four equivalent Al(2) atoms. In the second Al site, Al(2) is bonded to two equivalent Tb(1), four equivalent Mn(1), two equivalent Al(2), and four equivalent Al(1) atoms to form distorted AlTb2Mn4Al6 cuboctahedra that share corners with eight equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, corners with ten equivalent Al(2)Tb2Mn4Al6 cuboctahedra, edges with three equivalent Al(2)Tb2Mn4Al6 cuboctahedra, edges with four equivalent Mn(1)Tb2Mn2Al8 cuboctahedra, faces with seven equivalent Al(2)Tb2Mn4Al6 cuboctahedra, and faces with eight equivalent Mn(1)Tb2Mn2Al8 cuboctahedra. is represented by the CIF card [CIF]
data_Tb(MnAl2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.151
_cell_length_b   6.727
_cell_length_c   6.727
_cell_angle_alpha   81.572
_cell_angle_beta   67.490
_cell_angle_gamma   67.490
_symmetry_Int_Tables_number   1
_cell_volume   198.934
_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
  Tb  Tb0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.000  0.000  0.500  1.0
  Mn  Mn2  1  0.500  0.000  0.500  1.0
  Mn  Mn3  1  0.500  0.500  0.000  1.0
  Mn  Mn4  1  0.000  0.500  0.000  1.0
  Al  Al5  1  0.000  0.337  0.663  1.0
  Al  Al6  1  0.000  0.663  0.337  1.0
  Al  Al7  1  0.663  0.337  0.337  1.0
  Al  Al8  1  0.337  0.663  0.663  1.0
  Al  Al9  1  0.500  0.775  0.225  1.0
  Al  Al10  1  0.500  0.225  0.775  1.0
  Al  Al11  1  0.725  0.775  0.775  1.0
  Al  Al12  1  0.275  0.225  0.225  1.0
[/CIF]
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