The compound described by Tb4Fe29Si5 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(5), one Fe(8), two equivalent Fe(1), two equivalent Fe(4), four equivalent Fe(2), six equivalent Fe(6), and two equivalent Si(2) atoms. In the second Tb site, Tb(2) is bonded in a 19-coordinate geometry to one Fe(4), one Fe(9), two equivalent Fe(1), two equivalent Fe(5), four equivalent Fe(3), six equivalent Fe(7), one Si(1), and two equivalent Si(2) atoms. There are ten inequivalent Fe sites. In the first Fe site, Fe(8) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(10), one Fe(5), one Fe(9), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Si(2) atoms. In the second Fe site, Fe(9) is bonded in a 14-coordinate geometry to one Tb(2), one Fe(4), one Fe(8), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(7), one Si(1), and two equivalent Si(2) atoms. In the third Fe site, Fe(10) is bonded to two equivalent Tb(1), two equivalent Fe(8), four equivalent Fe(2), and four equivalent Fe(6) atoms to form FeTb2Fe10 cuboctahedra that share corners with four equivalent Fe(6)Tb3Fe8Si cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with six equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, edges with four equivalent Fe(6)Tb3Fe8Si cuboctahedra, faces with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, faces with four equivalent Fe(6)Tb3Fe8Si cuboctahedra, and faces with four equivalent Si(2)Tb2Fe10 cuboctahedra. In the fourth Fe site, Fe(1) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(2), one Fe(2), one Fe(3), one Fe(4), one Fe(5), one Fe(6), one Fe(7), one Fe(8), one Fe(9), and two equivalent Si(2) atoms. In the fifth Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Tb(1), one Fe(1), one Fe(10), one Fe(2), one Fe(4), one Fe(8), one Fe(9), three equivalent Fe(6), and one Si(2) atom. In the sixth Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Tb(2), one Fe(1), one Fe(3), one Fe(5), one Fe(8), one Fe(9), three equivalent Fe(7), one Si(1), and one Si(2) atom. In the seventh Fe site, Fe(4) is bonded to one Tb(2), two equivalent Tb(1), one Fe(9), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(6), and two equivalent Si(2) atoms to form distorted FeTb3Fe7Si2 cuboctahedra that share corners with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Si(2)Tb2Fe10 cuboctahedra, corners with three equivalent Fe(10)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Fe(6)Tb3Fe8Si cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Si(1)Tb2Fe10 cuboctahedra, edges with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(10)Tb2Fe10 cuboctahedra,  a faceface with one Fe(5)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(6)Tb3Fe8Si cuboctahedra. In the eighth Fe site, Fe(5) is bonded to one Tb(1), two equivalent Tb(2), one Fe(8), two equivalent Fe(1), two equivalent Fe(3), two equivalent Fe(7), and two equivalent Si(2) atoms to form FeTb3Fe7Si2 cuboctahedra that share corners with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, corners with two equivalent Si(2)Tb2Fe10 cuboctahedra, corners with three equivalent Si(1)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(10)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a faceface with one Si(1)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra. In the ninth Fe site, Fe(6) is bonded to three equivalent Tb(1), one Fe(1), one Fe(10), one Fe(4), one Fe(6), one Fe(8), three equivalent Fe(2), and one Si(2) atom to form distorted FeTb3Fe8Si cuboctahedra that share  a cornercorner with one Fe(10)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(5)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with five equivalent Fe(6)Tb3Fe8Si cuboctahedra,  an edgeedge with one Fe(10)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra, edges with three equivalent Fe(6)Tb3Fe8Si cuboctahedra,  a faceface with one Fe(10)Tb2Fe10 cuboctahedra,  a faceface with one Fe(5)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(6)Tb3Fe8Si cuboctahedra. In the tenth Fe site, Fe(7) is bonded to three equivalent Tb(2), one Fe(1), one Fe(5), one Fe(7), one Fe(9), three equivalent Fe(3), one Si(1), and one Si(2) atom to form distorted FeTb3Fe7Si2 cuboctahedra that share  a cornercorner with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a cornercorner with one Si(1)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with five equivalent Fe(7)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Si(1)Tb2Fe10 cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra, edges with three equivalent Fe(7)Tb3Fe7Si2 cuboctahedra,  a faceface with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a faceface with one Si(1)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to two equivalent Tb(2), two equivalent Fe(9), four equivalent Fe(3), and four equivalent Fe(7) atoms to form distorted SiTb2Fe10 cuboctahedra that share corners with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with six equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, edges with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, faces with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, and faces with four equivalent Si(2)Tb2Fe10 cuboctahedra. In the second Si site, Si(2) is bonded to one Tb(1), one Tb(2), one Fe(2), one Fe(3), one Fe(4), one Fe(5), one Fe(6), one Fe(7), one Fe(8), one Fe(9), and two equivalent Fe(1) atoms to form distorted SiTb2Fe10 cuboctahedra that share  a cornercorner with one Fe(10)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a cornercorner with one Fe(5)Tb3Fe7Si2 cuboctahedra,  a cornercorner with one Si(1)Tb2Fe10 cuboctahedra, corners with two equivalent Si(2)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Fe(6)Tb3Fe8Si cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(6)Tb3Fe8Si cuboctahedra,  a faceface with one Fe(10)Tb2Fe10 cuboctahedra,  a faceface with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a faceface with one Fe(5)Tb3Fe7Si2 cuboctahedra,  a faceface with one Si(1)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, and faces with two equivalent Si(2)Tb2Fe10 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4Fe29Si5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.352
_cell_length_b   6.352
_cell_length_c   12.649
_cell_angle_alpha   82.911
_cell_angle_beta   82.911
_cell_angle_gamma   82.690
_symmetry_Int_Tables_number   1
_cell_volume   499.281
_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  0.658  0.658  0.329  1.0
  Tb  Tb1  1  0.657  0.657  0.829  1.0
  Tb  Tb2  1  0.342  0.342  0.171  1.0
  Tb  Tb3  1  0.343  0.343  0.671  1.0
  Fe  Fe4  1  0.296  0.705  0.000  1.0
  Fe  Fe5  1  0.295  0.704  0.500  1.0
  Fe  Fe6  1  0.703  1.000  0.149  1.0
  Fe  Fe7  1  0.703  0.999  0.648  1.0
  Fe  Fe8  1  0.000  0.297  0.351  1.0
  Fe  Fe9  1  0.001  0.297  0.852  1.0
  Fe  Fe10  1  0.297  0.000  0.351  1.0
  Fe  Fe11  1  0.297  0.001  0.852  1.0
  Fe  Fe12  1  1.000  0.703  0.149  1.0
  Fe  Fe13  1  0.999  0.703  0.648  1.0
  Fe  Fe14  1  0.704  0.295  0.500  1.0
  Fe  Fe15  1  0.705  0.296  0.000  1.0
  Fe  Fe16  1  0.341  0.341  0.425  1.0
  Fe  Fe17  1  0.341  0.341  0.924  1.0
  Fe  Fe18  1  0.341  0.849  0.171  1.0
  Fe  Fe19  1  0.341  0.850  0.671  1.0
  Fe  Fe20  1  0.849  0.341  0.171  1.0
  Fe  Fe21  1  0.850  0.341  0.671  1.0
  Fe  Fe22  1  0.659  0.659  0.075  1.0
  Fe  Fe23  1  0.659  0.659  0.576  1.0
  Fe  Fe24  1  0.659  0.151  0.329  1.0
  Fe  Fe25  1  0.659  0.150  0.829  1.0
  Fe  Fe26  1  0.151  0.659  0.329  1.0
  Fe  Fe27  1  0.150  0.659  0.829  1.0
  Fe  Fe28  1  0.903  0.903  0.452  1.0
  Fe  Fe29  1  0.905  0.905  0.952  1.0
  Fe  Fe30  1  0.097  0.097  0.048  1.0
  Fe  Fe31  1  0.095  0.095  0.548  1.0
  Fe  Fe32  1  0.000  0.000  0.250  1.0
  Si  Si33  1  0.000  0.000  0.750  1.0
  Si  Si34  1  0.001  0.501  1.000  1.0
  Si  Si35  1  0.999  0.499  0.500  1.0
  Si  Si36  1  0.499  0.999  0.500  1.0
  Si  Si37  1  0.501  0.001  1.000  1.0
[/CIF]
.
The compound described by Tb4Fe29Si5 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(5), one Fe(8), two equivalent Fe(1), two equivalent Fe(4), four equivalent Fe(2), six equivalent Fe(6), and two equivalent Si(2) atoms. In the second Tb site, Tb(2) is bonded in a 19-coordinate geometry to one Fe(4), one Fe(9), two equivalent Fe(1), two equivalent Fe(5), four equivalent Fe(3), six equivalent Fe(7), one Si(1), and two equivalent Si(2) atoms. There are ten inequivalent Fe sites. In the first Fe site, Fe(8) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(10), one Fe(5), one Fe(9), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Si(2) atoms. In the second Fe site, Fe(9) is bonded in a 14-coordinate geometry to one Tb(2), one Fe(4), one Fe(8), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(7), one Si(1), and two equivalent Si(2) atoms. In the third Fe site, Fe(10) is bonded to two equivalent Tb(1), two equivalent Fe(8), four equivalent Fe(2), and four equivalent Fe(6) atoms to form FeTb2Fe10 cuboctahedra that share corners with four equivalent Fe(6)Tb3Fe8Si cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with six equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, edges with four equivalent Fe(6)Tb3Fe8Si cuboctahedra, faces with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, faces with four equivalent Fe(6)Tb3Fe8Si cuboctahedra, and faces with four equivalent Si(2)Tb2Fe10 cuboctahedra. In the fourth Fe site, Fe(1) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(2), one Fe(2), one Fe(3), one Fe(4), one Fe(5), one Fe(6), one Fe(7), one Fe(8), one Fe(9), and two equivalent Si(2) atoms. In the fifth Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Tb(1), one Fe(1), one Fe(10), one Fe(2), one Fe(4), one Fe(8), one Fe(9), three equivalent Fe(6), and one Si(2) atom. In the sixth Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Tb(2), one Fe(1), one Fe(3), one Fe(5), one Fe(8), one Fe(9), three equivalent Fe(7), one Si(1), and one Si(2) atom. In the seventh Fe site, Fe(4) is bonded to one Tb(2), two equivalent Tb(1), one Fe(9), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(6), and two equivalent Si(2) atoms to form distorted FeTb3Fe7Si2 cuboctahedra that share corners with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Si(2)Tb2Fe10 cuboctahedra, corners with three equivalent Fe(10)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Fe(6)Tb3Fe8Si cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Si(1)Tb2Fe10 cuboctahedra, edges with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(10)Tb2Fe10 cuboctahedra,  a faceface with one Fe(5)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(6)Tb3Fe8Si cuboctahedra. In the eighth Fe site, Fe(5) is bonded to one Tb(1), two equivalent Tb(2), one Fe(8), two equivalent Fe(1), two equivalent Fe(3), two equivalent Fe(7), and two equivalent Si(2) atoms to form FeTb3Fe7Si2 cuboctahedra that share corners with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, corners with two equivalent Si(2)Tb2Fe10 cuboctahedra, corners with three equivalent Si(1)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(10)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a faceface with one Si(1)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra. In the ninth Fe site, Fe(6) is bonded to three equivalent Tb(1), one Fe(1), one Fe(10), one Fe(4), one Fe(6), one Fe(8), three equivalent Fe(2), and one Si(2) atom to form distorted FeTb3Fe8Si cuboctahedra that share  a cornercorner with one Fe(10)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(5)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with five equivalent Fe(6)Tb3Fe8Si cuboctahedra,  an edgeedge with one Fe(10)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra, edges with three equivalent Fe(6)Tb3Fe8Si cuboctahedra,  a faceface with one Fe(10)Tb2Fe10 cuboctahedra,  a faceface with one Fe(5)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(6)Tb3Fe8Si cuboctahedra. In the tenth Fe site, Fe(7) is bonded to three equivalent Tb(2), one Fe(1), one Fe(5), one Fe(7), one Fe(9), three equivalent Fe(3), one Si(1), and one Si(2) atom to form distorted FeTb3Fe7Si2 cuboctahedra that share  a cornercorner with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a cornercorner with one Si(1)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, corners with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with five equivalent Fe(7)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Si(1)Tb2Fe10 cuboctahedra, edges with two equivalent Si(2)Tb2Fe10 cuboctahedra, edges with three equivalent Fe(7)Tb3Fe7Si2 cuboctahedra,  a faceface with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a faceface with one Si(1)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Si(2)Tb2Fe10 cuboctahedra, and faces with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to two equivalent Tb(2), two equivalent Fe(9), four equivalent Fe(3), and four equivalent Fe(7) atoms to form distorted SiTb2Fe10 cuboctahedra that share corners with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Si(2)Tb2Fe10 cuboctahedra, corners with six equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(4)Tb3Fe7Si2 cuboctahedra, edges with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(5)Tb3Fe7Si2 cuboctahedra, faces with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, and faces with four equivalent Si(2)Tb2Fe10 cuboctahedra. In the second Si site, Si(2) is bonded to one Tb(1), one Tb(2), one Fe(2), one Fe(3), one Fe(4), one Fe(5), one Fe(6), one Fe(7), one Fe(8), one Fe(9), and two equivalent Fe(1) atoms to form distorted SiTb2Fe10 cuboctahedra that share  a cornercorner with one Fe(10)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a cornercorner with one Fe(5)Tb3Fe7Si2 cuboctahedra,  a cornercorner with one Si(1)Tb2Fe10 cuboctahedra, corners with two equivalent Si(2)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, corners with four equivalent Fe(6)Tb3Fe8Si cuboctahedra,  an edgeedge with one Fe(4)Tb3Fe7Si2 cuboctahedra,  an edgeedge with one Fe(5)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, edges with two equivalent Fe(6)Tb3Fe8Si cuboctahedra,  a faceface with one Fe(10)Tb2Fe10 cuboctahedra,  a faceface with one Fe(4)Tb3Fe7Si2 cuboctahedra,  a faceface with one Fe(5)Tb3Fe7Si2 cuboctahedra,  a faceface with one Si(1)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(7)Tb3Fe7Si2 cuboctahedra, faces with two equivalent Fe(6)Tb3Fe8Si cuboctahedra, and faces with two equivalent Si(2)Tb2Fe10 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4Fe29Si5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.352
_cell_length_b   6.352
_cell_length_c   12.649
_cell_angle_alpha   82.911
_cell_angle_beta   82.911
_cell_angle_gamma   82.690
_symmetry_Int_Tables_number   1
_cell_volume   499.281
_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  0.658  0.658  0.329  1.0
  Tb  Tb1  1  0.657  0.657  0.829  1.0
  Tb  Tb2  1  0.342  0.342  0.171  1.0
  Tb  Tb3  1  0.343  0.343  0.671  1.0
  Fe  Fe4  1  0.296  0.705  0.000  1.0
  Fe  Fe5  1  0.295  0.704  0.500  1.0
  Fe  Fe6  1  0.703  1.000  0.149  1.0
  Fe  Fe7  1  0.703  0.999  0.648  1.0
  Fe  Fe8  1  0.000  0.297  0.351  1.0
  Fe  Fe9  1  0.001  0.297  0.852  1.0
  Fe  Fe10  1  0.297  0.000  0.351  1.0
  Fe  Fe11  1  0.297  0.001  0.852  1.0
  Fe  Fe12  1  1.000  0.703  0.149  1.0
  Fe  Fe13  1  0.999  0.703  0.648  1.0
  Fe  Fe14  1  0.704  0.295  0.500  1.0
  Fe  Fe15  1  0.705  0.296  0.000  1.0
  Fe  Fe16  1  0.341  0.341  0.425  1.0
  Fe  Fe17  1  0.341  0.341  0.924  1.0
  Fe  Fe18  1  0.341  0.849  0.171  1.0
  Fe  Fe19  1  0.341  0.850  0.671  1.0
  Fe  Fe20  1  0.849  0.341  0.171  1.0
  Fe  Fe21  1  0.850  0.341  0.671  1.0
  Fe  Fe22  1  0.659  0.659  0.075  1.0
  Fe  Fe23  1  0.659  0.659  0.576  1.0
  Fe  Fe24  1  0.659  0.151  0.329  1.0
  Fe  Fe25  1  0.659  0.150  0.829  1.0
  Fe  Fe26  1  0.151  0.659  0.329  1.0
  Fe  Fe27  1  0.150  0.659  0.829  1.0
  Fe  Fe28  1  0.903  0.903  0.452  1.0
  Fe  Fe29  1  0.905  0.905  0.952  1.0
  Fe  Fe30  1  0.097  0.097  0.048  1.0
  Fe  Fe31  1  0.095  0.095  0.548  1.0
  Fe  Fe32  1  0.000  0.000  0.250  1.0
  Si  Si33  1  0.000  0.000  0.750  1.0
  Si  Si34  1  0.001  0.501  1.000  1.0
  Si  Si35  1  0.999  0.499  0.500  1.0
  Si  Si36  1  0.499  0.999  0.500  1.0
  Si  Si37  1  0.501  0.001  1.000  1.0
[/CIF]
.