The compound described by TbNd3Fe34 crystallizes in the monoclinic Cm space group. Tb(1) is bonded in a 19-coordinate geometry to one Fe(13), one Fe(3), one Fe(7), one Fe(8), one Fe(9), two equivalent Fe(1), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(19), two equivalent Fe(21), and four equivalent Fe(5) atoms. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(14), one Fe(4), one Fe(7), one Fe(8), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(2), two equivalent Fe(20), two equivalent Fe(22), and four equivalent Fe(6) atoms. In the second Nd site, Nd(2) is bonded in a 19-coordinate geometry to one Fe(15), one Fe(3), one Fe(4), one Fe(7), one Fe(9), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(19), two equivalent Fe(21), two equivalent Fe(5), and four equivalent Fe(1) atoms. In the third Nd site, Nd(3) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(16), one Fe(3), one Fe(4), one Fe(8), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(20), two equivalent Fe(22), two equivalent Fe(6), and four equivalent Fe(2) atoms. There are twenty-two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Tb(1), two equivalent Nd(2), one Fe(12), one Fe(15), one Fe(17), one Fe(21), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(19) atoms to form FeTbNd2Fe9 cuboctahedra that share  a cornercorner with one Fe(8)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(7)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the second Fe site, Fe(2) is bonded to one Nd(1), two equivalent Nd(3), one Fe(10), one Fe(11), one Fe(16), one Fe(18), one Fe(22), one Fe(6), one Fe(8), and two equivalent Fe(20) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(7)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(8)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the third Fe site, Fe(3) is bonded to one Tb(1), one Nd(2), one Nd(3), one Fe(16), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(21), and two equivalent Fe(5) atoms to form FeTbNd2Fe9 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(8)TbNd2Fe9 cuboctahedra, corners with three equivalent Fe(9)TbNdFe10 cuboctahedra, corners with four equivalent Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(11)TbNdFe10 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the fourth Fe site, Fe(4) is bonded to one Nd(1), one Nd(2), one Nd(3), one Fe(15), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(22), and two equivalent Fe(6) atoms to form FeNd3Fe9 cuboctahedra that share corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(7)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(12)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the fifth Fe site, Fe(5) is bonded to two equivalent Tb(1), one Nd(2), one Fe(1), one Fe(11), one Fe(13), one Fe(18), one Fe(19), one Fe(3), one Fe(9), and two equivalent Fe(21) atoms to form FeTb2NdFe9 cuboctahedra that share  a cornercorner with one Fe(4)Nd3Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the sixth Fe site, Fe(6) is bonded to one Nd(3), two equivalent Nd(1), one Fe(10), one Fe(12), one Fe(14), one Fe(17), one Fe(2), one Fe(20), one Fe(4), and two equivalent Fe(22) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra. In the seventh Fe site, Fe(7) is bonded to one Tb(1), one Nd(1), one Nd(2), one Fe(14), two equivalent Fe(1), two equivalent Fe(12), two equivalent Fe(17), and two equivalent Fe(19) atoms to form FeTbNd2Fe9 cuboctahedra that share corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(8)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(9)TbNdFe10 cuboctahedra, corners with four equivalent Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(12)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the eighth Fe site, Fe(8) is bonded to one Tb(1), one Nd(1), one Nd(3), one Fe(13), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(2), and two equivalent Fe(20) atoms to form FeTbNd2Fe9 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(7)TbNd2Fe9 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, edges with two equivalent Fe(11)TbNdFe10 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the ninth Fe site, Fe(9) is bonded to one Tb(1), one Nd(2), one Fe(13), one Fe(15), two equivalent Fe(1), two equivalent Fe(19), two equivalent Fe(21), and two equivalent Fe(5) atoms to form FeTbNdFe10 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with three equivalent Fe(7)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the tenth Fe site, Fe(10) is bonded to one Nd(1), one Nd(3), one Fe(14), one Fe(16), two equivalent Fe(2), two equivalent Fe(20), two equivalent Fe(22), and two equivalent Fe(6) atoms to form FeNd2Fe10 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the eleventh Fe site, Fe(11) is bonded to one Tb(1), one Nd(3), one Fe(13), one Fe(16), one Fe(2), one Fe(20), one Fe(21), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(18) atoms to form FeTbNdFe10 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(4)Nd3Fe9 cuboctahedra,  a cornercorner with one Fe(7)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the twelfth Fe site, Fe(12) is bonded to one Nd(1), one Nd(2), one Fe(1), one Fe(14), one Fe(15), one Fe(19), one Fe(22), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(17) atoms to form FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(3)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(8)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the thirteenth Fe site, Fe(13) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(16), one Fe(8), one Fe(9), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(20), two equivalent Fe(21), and two equivalent Fe(5) atoms. In the fourteenth Fe site, Fe(14) is bonded in a 14-coordinate geometry to one Nd(1), one Fe(10), one Fe(15), one Fe(7), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(19), two equivalent Fe(22), and two equivalent Fe(6) atoms. In the fifteenth Fe site, Fe(15) is bonded in a 14-coordinate geometry to one Nd(2), one Fe(14), one Fe(4), one Fe(9), two equivalent Fe(1), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(19), and two equivalent Fe(22) atoms. In the sixteenth Fe site, Fe(16) is bonded in a 14-coordinate geometry to one Nd(3), one Fe(10), one Fe(13), one Fe(3), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(2), two equivalent Fe(20), and two equivalent Fe(21) atoms. In the seventeenth Fe site, Fe(17) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(2), one Fe(1), one Fe(14), one Fe(15), one Fe(19), one Fe(22), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(12) atoms. In the eighteenth Fe site, Fe(18) is bonded in a 12-coordinate geometry to one Tb(1), one Nd(3), one Fe(13), one Fe(16), one Fe(2), one Fe(20), one Fe(21), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(11) atoms. In the nineteenth Fe site, Fe(19) is bonded in a 12-coordinate geometry to one Tb(1), one Nd(2), one Fe(12), one Fe(14), one Fe(15), one Fe(17), one Fe(19), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(1) atoms. In the twentieth Fe site, Fe(20) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(3), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(18), one Fe(20), one Fe(6), one Fe(8), and two equivalent Fe(2) atoms. In the twenty-first Fe site, Fe(21) is bonded in a 12-coordinate geometry to one Tb(1), one Nd(2), one Fe(1), one Fe(11), one Fe(13), one Fe(16), one Fe(18), one Fe(21), one Fe(3), one Fe(9), and two equivalent Fe(5) atoms. In the twenty-second Fe site, Fe(22) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(3), one Fe(10), one Fe(12), one Fe(14), one Fe(15), one Fe(17), one Fe(2), one Fe(22), one Fe(4), and two equivalent Fe(6) atoms. is represented by the CIF file [CIF]
data_TbNd3Fe34
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.464
_cell_length_b   6.464
_cell_length_c   12.917
_cell_angle_alpha   83.080
_cell_angle_beta   83.080
_cell_angle_gamma   83.089
_symmetry_Int_Tables_number   1
_cell_volume   528.806
_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  0.341  0.341  0.671  1.0
  Nd  Nd1  1  0.342  0.342  0.171  1.0
  Nd  Nd2  1  0.657  0.657  0.829  1.0
  Nd  Nd3  1  0.658  0.658  0.329  1.0
  Fe  Fe4  1  0.154  0.657  0.828  1.0
  Fe  Fe5  1  0.154  0.658  0.329  1.0
  Fe  Fe6  1  0.657  0.657  0.577  1.0
  Fe  Fe7  1  0.658  0.658  0.077  1.0
  Fe  Fe8  1  0.657  0.154  0.828  1.0
  Fe  Fe9  1  0.658  0.154  0.329  1.0
  Fe  Fe10  1  0.846  0.342  0.671  1.0
  Fe  Fe11  1  0.846  0.342  0.171  1.0
  Fe  Fe12  1  0.342  0.342  0.922  1.0
  Fe  Fe13  1  0.342  0.342  0.424  1.0
  Fe  Fe14  1  0.342  0.846  0.671  1.0
  Fe  Fe15  1  0.342  0.846  0.171  1.0
  Fe  Fe16  1  0.001  0.001  0.750  1.0
  Fe  Fe17  1  0.000  0.000  0.250  1.0
  Fe  Fe18  1  0.001  0.500  0.501  1.0
  Fe  Fe19  1  0.000  0.500  1.000  1.0
  Fe  Fe20  1  0.500  0.000  1.000  1.0
  Fe  Fe21  1  0.500  0.001  0.501  1.0
  Fe  Fe22  1  0.098  0.098  0.549  1.0
  Fe  Fe23  1  0.097  0.097  0.048  1.0
  Fe  Fe24  1  0.903  0.903  0.951  1.0
  Fe  Fe25  1  0.903  0.903  0.452  1.0
  Fe  Fe26  1  0.710  0.290  1.000  1.0
  Fe  Fe27  1  0.708  0.291  0.501  1.0
  Fe  Fe28  1  0.290  0.001  0.854  1.0
  Fe  Fe29  1  0.290  1.000  0.355  1.0
  Fe  Fe30  1  0.001  0.709  0.645  1.0
  Fe  Fe31  1  0.000  0.710  0.145  1.0
  Fe  Fe32  1  0.709  0.001  0.645  1.0
  Fe  Fe33  1  0.710  0.000  0.145  1.0
  Fe  Fe34  1  0.001  0.290  0.854  1.0
  Fe  Fe35  1  1.000  0.290  0.355  1.0
  Fe  Fe36  1  0.290  0.710  1.000  1.0
  Fe  Fe37  1  0.291  0.708  0.501  1.0
[/CIF]
.
The compound described by TbNd3Fe34 crystallizes in the monoclinic Cm space group. Tb(1) is bonded in a 19-coordinate geometry to one Fe(13), one Fe(3), one Fe(7), one Fe(8), one Fe(9), two equivalent Fe(1), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(19), two equivalent Fe(21), and four equivalent Fe(5) atoms. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(14), one Fe(4), one Fe(7), one Fe(8), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(2), two equivalent Fe(20), two equivalent Fe(22), and four equivalent Fe(6) atoms. In the second Nd site, Nd(2) is bonded in a 19-coordinate geometry to one Fe(15), one Fe(3), one Fe(4), one Fe(7), one Fe(9), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(19), two equivalent Fe(21), two equivalent Fe(5), and four equivalent Fe(1) atoms. In the third Nd site, Nd(3) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(16), one Fe(3), one Fe(4), one Fe(8), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(20), two equivalent Fe(22), two equivalent Fe(6), and four equivalent Fe(2) atoms. There are twenty-two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Tb(1), two equivalent Nd(2), one Fe(12), one Fe(15), one Fe(17), one Fe(21), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(19) atoms to form FeTbNd2Fe9 cuboctahedra that share  a cornercorner with one Fe(8)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(7)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the second Fe site, Fe(2) is bonded to one Nd(1), two equivalent Nd(3), one Fe(10), one Fe(11), one Fe(16), one Fe(18), one Fe(22), one Fe(6), one Fe(8), and two equivalent Fe(20) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(7)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(8)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the third Fe site, Fe(3) is bonded to one Tb(1), one Nd(2), one Nd(3), one Fe(16), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(21), and two equivalent Fe(5) atoms to form FeTbNd2Fe9 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(8)TbNd2Fe9 cuboctahedra, corners with three equivalent Fe(9)TbNdFe10 cuboctahedra, corners with four equivalent Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(11)TbNdFe10 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the fourth Fe site, Fe(4) is bonded to one Nd(1), one Nd(2), one Nd(3), one Fe(15), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(22), and two equivalent Fe(6) atoms to form FeNd3Fe9 cuboctahedra that share corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(7)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(12)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the fifth Fe site, Fe(5) is bonded to two equivalent Tb(1), one Nd(2), one Fe(1), one Fe(11), one Fe(13), one Fe(18), one Fe(19), one Fe(3), one Fe(9), and two equivalent Fe(21) atoms to form FeTb2NdFe9 cuboctahedra that share  a cornercorner with one Fe(4)Nd3Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the sixth Fe site, Fe(6) is bonded to one Nd(3), two equivalent Nd(1), one Fe(10), one Fe(12), one Fe(14), one Fe(17), one Fe(2), one Fe(20), one Fe(4), and two equivalent Fe(22) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(11)TbNdFe10 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra. In the seventh Fe site, Fe(7) is bonded to one Tb(1), one Nd(1), one Nd(2), one Fe(14), two equivalent Fe(1), two equivalent Fe(12), two equivalent Fe(17), and two equivalent Fe(19) atoms to form FeTbNd2Fe9 cuboctahedra that share corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(8)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(9)TbNdFe10 cuboctahedra, corners with four equivalent Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(12)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the eighth Fe site, Fe(8) is bonded to one Tb(1), one Nd(1), one Nd(3), one Fe(13), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(2), and two equivalent Fe(20) atoms to form FeTbNd2Fe9 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(7)TbNd2Fe9 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(9)TbNdFe10 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, edges with two equivalent Fe(11)TbNdFe10 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the ninth Fe site, Fe(9) is bonded to one Tb(1), one Nd(2), one Fe(13), one Fe(15), two equivalent Fe(1), two equivalent Fe(19), two equivalent Fe(21), and two equivalent Fe(5) atoms to form FeTbNdFe10 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(3)TbNd2Fe9 cuboctahedra, corners with three equivalent Fe(7)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, edges with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the tenth Fe site, Fe(10) is bonded to one Nd(1), one Nd(3), one Fe(14), one Fe(16), two equivalent Fe(2), two equivalent Fe(20), two equivalent Fe(22), and two equivalent Fe(6) atoms to form FeNd2Fe10 cuboctahedra that share corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra, corners with three equivalent Fe(4)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(8)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(6)Nd3Fe9 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the eleventh Fe site, Fe(11) is bonded to one Tb(1), one Nd(3), one Fe(13), one Fe(16), one Fe(2), one Fe(20), one Fe(21), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(18) atoms to form FeTbNdFe10 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(4)Nd3Fe9 cuboctahedra,  a cornercorner with one Fe(7)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra, corners with two equivalent Fe(11)TbNdFe10 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(8)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, and faces with two equivalent Fe(11)TbNdFe10 cuboctahedra. In the twelfth Fe site, Fe(12) is bonded to one Nd(1), one Nd(2), one Fe(1), one Fe(14), one Fe(15), one Fe(19), one Fe(22), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(17) atoms to form FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(10)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(3)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(8)TbNd2Fe9 cuboctahedra,  a cornercorner with one Fe(9)TbNdFe10 cuboctahedra, corners with two equivalent Fe(12)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(6)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(5)Tb2NdFe9 cuboctahedra, corners with two equivalent Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Tb2NdFe9 cuboctahedra,  an edgeedge with one Fe(1)TbNd2Fe9 cuboctahedra,  an edgeedge with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(10)Nd2Fe10 cuboctahedra,  a faceface with one Fe(4)Nd3Fe9 cuboctahedra,  a faceface with one Fe(7)TbNd2Fe9 cuboctahedra,  a faceface with one Fe(9)TbNdFe10 cuboctahedra, faces with two equivalent Fe(12)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(6)Nd3Fe9 cuboctahedra, and faces with two equivalent Fe(1)TbNd2Fe9 cuboctahedra. In the thirteenth Fe site, Fe(13) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(16), one Fe(8), one Fe(9), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(20), two equivalent Fe(21), and two equivalent Fe(5) atoms. In the fourteenth Fe site, Fe(14) is bonded in a 14-coordinate geometry to one Nd(1), one Fe(10), one Fe(15), one Fe(7), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(19), two equivalent Fe(22), and two equivalent Fe(6) atoms. In the fifteenth Fe site, Fe(15) is bonded in a 14-coordinate geometry to one Nd(2), one Fe(14), one Fe(4), one Fe(9), two equivalent Fe(1), two equivalent Fe(12), two equivalent Fe(17), two equivalent Fe(19), and two equivalent Fe(22) atoms. In the sixteenth Fe site, Fe(16) is bonded in a 14-coordinate geometry to one Nd(3), one Fe(10), one Fe(13), one Fe(3), two equivalent Fe(11), two equivalent Fe(18), two equivalent Fe(2), two equivalent Fe(20), and two equivalent Fe(21) atoms. In the seventeenth Fe site, Fe(17) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(2), one Fe(1), one Fe(14), one Fe(15), one Fe(19), one Fe(22), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(12) atoms. In the eighteenth Fe site, Fe(18) is bonded in a 12-coordinate geometry to one Tb(1), one Nd(3), one Fe(13), one Fe(16), one Fe(2), one Fe(20), one Fe(21), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(11) atoms. In the nineteenth Fe site, Fe(19) is bonded in a 12-coordinate geometry to one Tb(1), one Nd(2), one Fe(12), one Fe(14), one Fe(15), one Fe(17), one Fe(19), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(1) atoms. In the twentieth Fe site, Fe(20) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(3), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(18), one Fe(20), one Fe(6), one Fe(8), and two equivalent Fe(2) atoms. In the twenty-first Fe site, Fe(21) is bonded in a 12-coordinate geometry to one Tb(1), one Nd(2), one Fe(1), one Fe(11), one Fe(13), one Fe(16), one Fe(18), one Fe(21), one Fe(3), one Fe(9), and two equivalent Fe(5) atoms. In the twenty-second Fe site, Fe(22) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(3), one Fe(10), one Fe(12), one Fe(14), one Fe(15), one Fe(17), one Fe(2), one Fe(22), one Fe(4), and two equivalent Fe(6) atoms. is represented by the CIF file [CIF]
data_TbNd3Fe34
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.464
_cell_length_b   6.464
_cell_length_c   12.917
_cell_angle_alpha   83.080
_cell_angle_beta   83.080
_cell_angle_gamma   83.089
_symmetry_Int_Tables_number   1
_cell_volume   528.806
_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  0.341  0.341  0.671  1.0
  Nd  Nd1  1  0.342  0.342  0.171  1.0
  Nd  Nd2  1  0.657  0.657  0.829  1.0
  Nd  Nd3  1  0.658  0.658  0.329  1.0
  Fe  Fe4  1  0.154  0.657  0.828  1.0
  Fe  Fe5  1  0.154  0.658  0.329  1.0
  Fe  Fe6  1  0.657  0.657  0.577  1.0
  Fe  Fe7  1  0.658  0.658  0.077  1.0
  Fe  Fe8  1  0.657  0.154  0.828  1.0
  Fe  Fe9  1  0.658  0.154  0.329  1.0
  Fe  Fe10  1  0.846  0.342  0.671  1.0
  Fe  Fe11  1  0.846  0.342  0.171  1.0
  Fe  Fe12  1  0.342  0.342  0.922  1.0
  Fe  Fe13  1  0.342  0.342  0.424  1.0
  Fe  Fe14  1  0.342  0.846  0.671  1.0
  Fe  Fe15  1  0.342  0.846  0.171  1.0
  Fe  Fe16  1  0.001  0.001  0.750  1.0
  Fe  Fe17  1  0.000  0.000  0.250  1.0
  Fe  Fe18  1  0.001  0.500  0.501  1.0
  Fe  Fe19  1  0.000  0.500  1.000  1.0
  Fe  Fe20  1  0.500  0.000  1.000  1.0
  Fe  Fe21  1  0.500  0.001  0.501  1.0
  Fe  Fe22  1  0.098  0.098  0.549  1.0
  Fe  Fe23  1  0.097  0.097  0.048  1.0
  Fe  Fe24  1  0.903  0.903  0.951  1.0
  Fe  Fe25  1  0.903  0.903  0.452  1.0
  Fe  Fe26  1  0.710  0.290  1.000  1.0
  Fe  Fe27  1  0.708  0.291  0.501  1.0
  Fe  Fe28  1  0.290  0.001  0.854  1.0
  Fe  Fe29  1  0.290  1.000  0.355  1.0
  Fe  Fe30  1  0.001  0.709  0.645  1.0
  Fe  Fe31  1  0.000  0.710  0.145  1.0
  Fe  Fe32  1  0.709  0.001  0.645  1.0
  Fe  Fe33  1  0.710  0.000  0.145  1.0
  Fe  Fe34  1  0.001  0.290  0.854  1.0
  Fe  Fe35  1  1.000  0.290  0.355  1.0
  Fe  Fe36  1  0.290  0.710  1.000  1.0
  Fe  Fe37  1  0.291  0.708  0.501  1.0
[/CIF]
.