The structure described by Tb2AlGe6 crystallizes in the monoclinic C2/m space group. Tb(1) is bonded in a 12-coordinate geometry to two equivalent Al(1), one Ge(2), one Ge(4), two equivalent Ge(5), three equivalent Ge(1), and three equivalent Ge(3) atoms. Al(1) is bonded in a 5-coordinate geometry to four equivalent Tb(1), one Ge(1), one Ge(2), one Ge(4), and two equivalent Ge(5) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Tb(1), one Al(1), one Ge(1), and one Ge(3) atom. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to two equivalent Tb(1), one Al(1), one Ge(2), and two equivalent Ge(5) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to six equivalent Tb(1), one Ge(1), and one Ge(3) atom. In the fourth Ge site, Ge(4) is bonded in a 6-coordinate geometry to two equivalent Tb(1), one Al(1), one Ge(4), and two equivalent Ge(5) atoms. In the fifth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Tb(1), one Al(1), one Ge(2), one Ge(4), and one Ge(5) atom. is represented by the CIF file [CIF]
data_Tb2AlGe6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.031
_cell_length_b   6.031
_cell_length_c   10.526
_cell_angle_alpha   81.856
_cell_angle_beta   81.856
_cell_angle_gamma   91.688
_symmetry_Int_Tables_number   1
_cell_volume   374.729
_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
  Tb  Tb0  1  0.665  0.161  0.339  1.0
  Tb  Tb1  1  0.335  0.839  0.661  1.0
  Tb  Tb2  1  0.839  0.335  0.661  1.0
  Tb  Tb3  1  0.161  0.665  0.339  1.0
  Al  Al4  1  0.200  0.200  0.197  1.0
  Al  Al5  1  0.800  0.800  0.803  1.0
  Ge  Ge6  1  0.852  0.852  0.561  1.0
  Ge  Ge7  1  0.148  0.148  0.439  1.0
  Ge  Ge8  1  0.509  0.509  0.118  1.0
  Ge  Ge9  1  0.491  0.491  0.882  1.0
  Ge  Ge10  1  0.639  0.639  0.413  1.0
  Ge  Ge11  1  0.361  0.361  0.587  1.0
  Ge  Ge12  1  0.931  0.931  0.118  1.0
  Ge  Ge13  1  0.069  0.069  0.882  1.0
  Ge  Ge14  1  0.505  0.934  0.118  1.0
  Ge  Ge15  1  0.495  0.066  0.882  1.0
  Ge  Ge16  1  0.066  0.495  0.882  1.0
  Ge  Ge17  1  0.934  0.505  0.118  1.0
[/CIF]
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The structure described by Tb2AlGe6 crystallizes in the monoclinic C2/m space group. Tb(1) is bonded in a 12-coordinate geometry to two equivalent Al(1), one Ge(2), one Ge(4), two equivalent Ge(5), three equivalent Ge(1), and three equivalent Ge(3) atoms. Al(1) is bonded in a 5-coordinate geometry to four equivalent Tb(1), one Ge(1), one Ge(2), one Ge(4), and two equivalent Ge(5) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Tb(1), one Al(1), one Ge(1), and one Ge(3) atom. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to two equivalent Tb(1), one Al(1), one Ge(2), and two equivalent Ge(5) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to six equivalent Tb(1), one Ge(1), and one Ge(3) atom. In the fourth Ge site, Ge(4) is bonded in a 6-coordinate geometry to two equivalent Tb(1), one Al(1), one Ge(4), and two equivalent Ge(5) atoms. In the fifth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Tb(1), one Al(1), one Ge(2), one Ge(4), and one Ge(5) atom. is represented by the CIF file [CIF]
data_Tb2AlGe6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.031
_cell_length_b   6.031
_cell_length_c   10.526
_cell_angle_alpha   81.856
_cell_angle_beta   81.856
_cell_angle_gamma   91.688
_symmetry_Int_Tables_number   1
_cell_volume   374.729
_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
  Tb  Tb0  1  0.665  0.161  0.339  1.0
  Tb  Tb1  1  0.335  0.839  0.661  1.0
  Tb  Tb2  1  0.839  0.335  0.661  1.0
  Tb  Tb3  1  0.161  0.665  0.339  1.0
  Al  Al4  1  0.200  0.200  0.197  1.0
  Al  Al5  1  0.800  0.800  0.803  1.0
  Ge  Ge6  1  0.852  0.852  0.561  1.0
  Ge  Ge7  1  0.148  0.148  0.439  1.0
  Ge  Ge8  1  0.509  0.509  0.118  1.0
  Ge  Ge9  1  0.491  0.491  0.882  1.0
  Ge  Ge10  1  0.639  0.639  0.413  1.0
  Ge  Ge11  1  0.361  0.361  0.587  1.0
  Ge  Ge12  1  0.931  0.931  0.118  1.0
  Ge  Ge13  1  0.069  0.069  0.882  1.0
  Ge  Ge14  1  0.505  0.934  0.118  1.0
  Ge  Ge15  1  0.495  0.066  0.882  1.0
  Ge  Ge16  1  0.066  0.495  0.882  1.0
  Ge  Ge17  1  0.934  0.505  0.118  1.0
[/CIF]
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