Nd3Fe29 crystallizes in the monoclinic C2/m space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 19-coordinate geometry to one Fe(3), one Fe(5), one Fe(9), two equivalent Fe(10), two equivalent Fe(11), two equivalent Fe(6), four equivalent Fe(7), and six equivalent Fe(2) atoms. In the second Nd site, Nd(2) is bonded in a 20-coordinate geometry to two equivalent Fe(11), two equivalent Fe(4), two equivalent Fe(8), two equivalent Fe(9), four equivalent Fe(1), four equivalent Fe(10), and four equivalent Fe(6) atoms. There are eleven inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Nd(2), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(6), two equivalent Fe(8), and two equivalent Fe(9) atoms to form FeNd2Fe10 cuboctahedra that share corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(6)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(7)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with four equivalent Fe(10)Nd2Fe10 cuboctahedra, and faces with four equivalent Fe(6)Nd2Fe10 cuboctahedra. In the second Fe site, Fe(2) is bonded to three equivalent Nd(1), one Fe(10), one Fe(11), one Fe(2), one Fe(3), one Fe(5), one Fe(6), and three equivalent Fe(7) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(3)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with five equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(3)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(6)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with three equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(2)Nd3Fe9 cuboctahedra, and faces with six equivalent Fe(7)Nd2Fe10 cuboctahedra. In the third Fe site, Fe(3) is bonded to two equivalent Nd(1), two equivalent Fe(5), four equivalent Fe(2), and four equivalent Fe(7) atoms to form FeNd2Fe10 cuboctahedra that share corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with six equivalent Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(9)Nd2Fe10 cuboctahedra, edges with four equivalent Fe(7)Nd2Fe10 cuboctahedra, edges with four equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with four equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(7)Nd2Fe10 cuboctahedra, and faces with four equivalent Fe(2)Nd3Fe9 cuboctahedra. In the fourth Fe site, Fe(4) is bonded in a 14-coordinate geometry to one Nd(2), one Fe(11), one Fe(5), one Fe(9), two equivalent Fe(1), two equivalent Fe(10), two equivalent Fe(6), two equivalent Fe(7), and two equivalent Fe(8) atoms. In the fifth Fe site, Fe(5) is bonded in a 14-coordinate geometry to one Nd(1), one Fe(3), one Fe(4), one Fe(9), two equivalent Fe(10), two equivalent Fe(2), two equivalent Fe(6), two equivalent Fe(7), and two equivalent Fe(8) atoms. In the sixth Fe site, Fe(6) is bonded to one Nd(1), one Nd(2), one Fe(1), one Fe(11), one Fe(2), one Fe(4), one Fe(5), one Fe(7), one Fe(8), one Fe(9), and two equivalent Fe(10) atoms to form distorted FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(3)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with five equivalent Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(6)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(6)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(7)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(9)Nd2Fe10 cuboctahedra, and faces with three equivalent Fe(2)Nd3Fe9 cuboctahedra. In the seventh Fe site, Fe(7) is bonded to two equivalent Nd(1), one Fe(10), one Fe(11), one Fe(3), one Fe(4), one Fe(5), one Fe(6), one Fe(7), and three equivalent Fe(2) atoms to form distorted FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with five equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with six equivalent Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(3)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(1)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(7)Nd2Fe10 cuboctahedra, and faces with six equivalent Fe(2)Nd3Fe9 cuboctahedra. In the eighth Fe site, Fe(8) is bonded in a 14-coordinate geometry to one Nd(2), one Fe(8), two equivalent Fe(1), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(6), and two equivalent Fe(9) atoms. In the ninth Fe site, Fe(9) is bonded to one Nd(1), one Nd(2), one Fe(4), one Fe(5), two equivalent Fe(1), two equivalent Fe(10), two equivalent Fe(6), and two equivalent Fe(8) atoms to form distorted FeNd2Fe10 cuboctahedra that share corners with two equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with four equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with six equivalent Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(3)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(11)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(7)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with four equivalent Fe(10)Nd2Fe10 cuboctahedra, and faces with six equivalent Fe(6)Nd2Fe10 cuboctahedra. In the tenth Fe site, Fe(10) is bonded to one Nd(1), one Nd(2), one Fe(1), one Fe(11), one Fe(2), one Fe(4), one Fe(5), one Fe(7), one Fe(8), one Fe(9), and two equivalent Fe(6) atoms to form FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(3)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(1)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(6)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(11)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(6)Nd2Fe10 cuboctahedra, and faces with three equivalent Fe(7)Nd2Fe10 cuboctahedra. In the eleventh Fe site, Fe(11) is bonded to one Nd(2), two equivalent Nd(1), one Fe(4), two equivalent Fe(10), two equivalent Fe(2), two equivalent Fe(6), and two equivalent Fe(7) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(11)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(3)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(7)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(7)Nd2Fe10 cuboctahedra, and faces with four equivalent Fe(2)Nd3Fe9 cuboctahedra.
Nd3Fe29 crystallizes in the monoclinic C2/m space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 19-coordinate geometry to one Fe(3), one Fe(5), one Fe(9), two equivalent Fe(10), two equivalent Fe(11), two equivalent Fe(6), four equivalent Fe(7), and six equivalent Fe(2) atoms. The Nd(1)-Fe(3) bond length is 3.32 Å. The Nd(1)-Fe(5) bond length is 3.09 Å. The Nd(1)-Fe(9) bond length is 3.13 Å. Both Nd(1)-Fe(10) bond lengths are 3.27 Å. There is one shorter (3.08 Å) and one longer (3.27 Å) Nd(1)-Fe(11) bond length. Both Nd(1)-Fe(6) bond lengths are 3.11 Å. There are two shorter (3.05 Å) and two longer (3.06 Å) Nd(1)-Fe(7) bond lengths. There are a spread of Nd(1)-Fe(2) bond distances ranging from 3.13-3.25 Å. In the second Nd site, Nd(2) is bonded in a 20-coordinate geometry to two equivalent Fe(11), two equivalent Fe(4), two equivalent Fe(8), two equivalent Fe(9), four equivalent Fe(1), four equivalent Fe(10), and four equivalent Fe(6) atoms. Both Nd(2)-Fe(11) bond lengths are 3.10 Å. Both Nd(2)-Fe(4) bond lengths are 3.05 Å. Both Nd(2)-Fe(8) bond lengths are 3.09 Å. Both Nd(2)-Fe(9) bond lengths are 3.05 Å. All Nd(2)-Fe(1) bond lengths are 3.24 Å. All Nd(2)-Fe(10) bond lengths are 3.26 Å. All Nd(2)-Fe(6) bond lengths are 3.03 Å. There are eleven inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Nd(2), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(6), two equivalent Fe(8), and two equivalent Fe(9) atoms to form FeNd2Fe10 cuboctahedra that share corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(6)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(7)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with four equivalent Fe(10)Nd2Fe10 cuboctahedra, and faces with four equivalent Fe(6)Nd2Fe10 cuboctahedra. Both Fe(1)-Fe(10) bond lengths are 2.36 Å. Both Fe(1)-Fe(4) bond lengths are 2.61 Å. Both Fe(1)-Fe(6) bond lengths are 2.45 Å. Both Fe(1)-Fe(8) bond lengths are 2.60 Å. Both Fe(1)-Fe(9) bond lengths are 2.45 Å. In the second Fe site, Fe(2) is bonded to three equivalent Nd(1), one Fe(10), one Fe(11), one Fe(2), one Fe(3), one Fe(5), one Fe(6), and three equivalent Fe(7) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(3)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with five equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(3)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(6)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with three equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(2)Nd3Fe9 cuboctahedra, and faces with six equivalent Fe(7)Nd2Fe10 cuboctahedra. The Fe(2)-Fe(10) bond length is 2.43 Å. The Fe(2)-Fe(11) bond length is 2.51 Å. The Fe(2)-Fe(2) bond length is 2.48 Å. The Fe(2)-Fe(3) bond length is 2.46 Å. The Fe(2)-Fe(5) bond length is 2.66 Å. The Fe(2)-Fe(6) bond length is 2.52 Å. There are a spread of Fe(2)-Fe(7) bond distances ranging from 2.56-2.65 Å. In the third Fe site, Fe(3) is bonded to two equivalent Nd(1), two equivalent Fe(5), four equivalent Fe(2), and four equivalent Fe(7) atoms to form FeNd2Fe10 cuboctahedra that share corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with six equivalent Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(9)Nd2Fe10 cuboctahedra, edges with four equivalent Fe(7)Nd2Fe10 cuboctahedra, edges with four equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with four equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(7)Nd2Fe10 cuboctahedra, and faces with four equivalent Fe(2)Nd3Fe9 cuboctahedra. Both Fe(3)-Fe(5) bond lengths are 2.63 Å. All Fe(3)-Fe(7) bond lengths are 2.45 Å. In the fourth Fe site, Fe(4) is bonded in a 14-coordinate geometry to one Nd(2), one Fe(11), one Fe(5), one Fe(9), two equivalent Fe(1), two equivalent Fe(10), two equivalent Fe(6), two equivalent Fe(7), and two equivalent Fe(8) atoms. The Fe(4)-Fe(11) bond length is 2.61 Å. The Fe(4)-Fe(5) bond length is 2.41 Å. The Fe(4)-Fe(9) bond length is 2.58 Å. Both Fe(4)-Fe(10) bond lengths are 2.64 Å. Both Fe(4)-Fe(6) bond lengths are 2.66 Å. Both Fe(4)-Fe(7) bond lengths are 2.76 Å. Both Fe(4)-Fe(8) bond lengths are 2.89 Å. In the fifth Fe site, Fe(5) is bonded in a 14-coordinate geometry to one Nd(1), one Fe(3), one Fe(4), one Fe(9), two equivalent Fe(10), two equivalent Fe(2), two equivalent Fe(6), two equivalent Fe(7), and two equivalent Fe(8) atoms. The Fe(5)-Fe(9) bond length is 2.60 Å. Both Fe(5)-Fe(10) bond lengths are 2.59 Å. Both Fe(5)-Fe(6) bond lengths are 2.64 Å. Both Fe(5)-Fe(7) bond lengths are 2.79 Å. Both Fe(5)-Fe(8) bond lengths are 2.90 Å. In the sixth Fe site, Fe(6) is bonded to one Nd(1), one Nd(2), one Fe(1), one Fe(11), one Fe(2), one Fe(4), one Fe(5), one Fe(7), one Fe(8), one Fe(9), and two equivalent Fe(10) atoms to form distorted FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(3)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with five equivalent Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(6)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(6)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(7)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(9)Nd2Fe10 cuboctahedra, and faces with three equivalent Fe(2)Nd3Fe9 cuboctahedra. The Fe(6)-Fe(11) bond length is 2.76 Å. The Fe(6)-Fe(7) bond length is 2.44 Å. The Fe(6)-Fe(8) bond length is 2.60 Å. The Fe(6)-Fe(9) bond length is 2.76 Å. There is one shorter (2.41 Å) and one longer (2.47 Å) Fe(6)-Fe(10) bond length. In the seventh Fe site, Fe(7) is bonded to two equivalent Nd(1), one Fe(10), one Fe(11), one Fe(3), one Fe(4), one Fe(5), one Fe(6), one Fe(7), and three equivalent Fe(2) atoms to form distorted FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with five equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with six equivalent Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(3)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(1)Nd2Fe10 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(11)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with three equivalent Fe(7)Nd2Fe10 cuboctahedra, and faces with six equivalent Fe(2)Nd3Fe9 cuboctahedra. The Fe(7)-Fe(10) bond length is 2.47 Å. The Fe(7)-Fe(11) bond length is 2.54 Å. The Fe(7)-Fe(7) bond length is 2.49 Å. In the eighth Fe site, Fe(8) is bonded in a 14-coordinate geometry to one Nd(2), one Fe(8), two equivalent Fe(1), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(6), and two equivalent Fe(9) atoms. The Fe(8)-Fe(8) bond length is 2.40 Å. Both Fe(8)-Fe(10) bond lengths are 2.60 Å. Both Fe(8)-Fe(9) bond lengths are 2.59 Å. In the ninth Fe site, Fe(9) is bonded to one Nd(1), one Nd(2), one Fe(4), one Fe(5), two equivalent Fe(1), two equivalent Fe(10), two equivalent Fe(6), and two equivalent Fe(8) atoms to form distorted FeNd2Fe10 cuboctahedra that share corners with two equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(2)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with four equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with six equivalent Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(3)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(11)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(7)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with four equivalent Fe(10)Nd2Fe10 cuboctahedra, and faces with six equivalent Fe(6)Nd2Fe10 cuboctahedra. Both Fe(9)-Fe(10) bond lengths are 2.43 Å. In the tenth Fe site, Fe(10) is bonded to one Nd(1), one Nd(2), one Fe(1), one Fe(11), one Fe(2), one Fe(4), one Fe(5), one Fe(7), one Fe(8), one Fe(9), and two equivalent Fe(6) atoms to form FeNd2Fe10 cuboctahedra that share  a cornercorner with one Fe(3)Nd2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(1)Nd2Fe10 cuboctahedra, corners with two equivalent Fe(11)Nd3Fe9 cuboctahedra, corners with three equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(1)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(10)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(6)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(11)Nd3Fe9 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(2)Nd3Fe9 cuboctahedra, faces with three equivalent Fe(6)Nd2Fe10 cuboctahedra, and faces with three equivalent Fe(7)Nd2Fe10 cuboctahedra. The Fe(10)-Fe(11) bond length is 2.48 Å. In the eleventh Fe site, Fe(11) is bonded to one Nd(2), two equivalent Nd(1), one Fe(4), two equivalent Fe(10), two equivalent Fe(2), two equivalent Fe(6), and two equivalent Fe(7) atoms to form FeNd3Fe9 cuboctahedra that share  a cornercorner with one Fe(11)Nd3Fe9 cuboctahedra, corners with two equivalent Fe(7)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(3)Nd2Fe10 cuboctahedra, corners with three equivalent Fe(9)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(10)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(6)Nd2Fe10 cuboctahedra, corners with four equivalent Fe(2)Nd3Fe9 cuboctahedra,  an edgeedge with one Fe(9)Nd2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Nd3Fe9 cuboctahedra, edges with two equivalent Fe(1)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(10)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(7)Nd2Fe10 cuboctahedra, edges with two equivalent Fe(2)Nd3Fe9 cuboctahedra,  a faceface with one Fe(3)Nd2Fe10 cuboctahedra,  a faceface with one Fe(9)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(1)Nd2Fe10 cuboctahedra, faces with two equivalent Fe(10)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(6)Nd2Fe10 cuboctahedra, faces with four equivalent Fe(7)Nd2Fe10 cuboctahedra, and faces with four equivalent Fe(2)Nd3Fe9 cuboctahedra.