Nd4Ge13 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to two equivalent Ge(1), two equivalent Ge(5), two equivalent Ge(9), four equivalent Ge(13), and four equivalent Ge(3) atoms. In the second Nd site, Nd(2) is bonded in a 10-coordinate geometry to two equivalent Ge(10), two equivalent Ge(2), two equivalent Ge(6), and four equivalent Ge(4) atoms. In the third Nd site, Nd(3) is bonded in a 10-coordinate geometry to two equivalent Ge(11), two equivalent Ge(3), two equivalent Ge(7), and four equivalent Ge(1) atoms. In the fourth Nd site, Nd(4) is bonded in a 10-coordinate geometry to two equivalent Ge(12), two equivalent Ge(4), two equivalent Ge(8), and four equivalent Ge(2) atoms. There are thirteen inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), four equivalent Nd(3), and two equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Nd(2), four equivalent Nd(4), and two equivalent Ge(4) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Nd(3), four equivalent Nd(1), one Ge(13), and two equivalent Ge(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Nd(4), four equivalent Nd(2), and two equivalent Ge(2) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Nd(1), one Ge(8), two equivalent Ge(13), and four equivalent Ge(9) atoms. In the sixth Ge site, Ge(6) is bonded in a 7-coordinate geometry to two equivalent Nd(2), one Ge(7), and four equivalent Ge(10) atoms. In the seventh Ge site, Ge(7) is bonded in a 7-coordinate geometry to two equivalent Nd(3), one Ge(6), and four equivalent Ge(11) atoms. In the eighth Ge site, Ge(8) is bonded in a 7-coordinate geometry to two equivalent Nd(4), one Ge(5), and four equivalent Ge(12) atoms. In the ninth Ge site, Ge(9) is bonded in a 9-coordinate geometry to two equivalent Nd(1), one Ge(12), two equivalent Ge(13), and four equivalent Ge(5) atoms. In the tenth Ge site, Ge(10) is bonded in a 7-coordinate geometry to two equivalent Nd(2), one Ge(11), and four equivalent Ge(6) atoms. In the eleventh Ge site, Ge(11) is bonded in a 7-coordinate geometry to two equivalent Nd(3), one Ge(10), and four equivalent Ge(7) atoms. In the twelfth Ge site, Ge(12) is bonded in a 7-coordinate geometry to two equivalent Nd(4), one Ge(9), and four equivalent Ge(8) atoms. In the thirteenth Ge site, Ge(13) is bonded in a 9-coordinate geometry to four equivalent Nd(1), one Ge(3), two equivalent Ge(5), and two equivalent Ge(9) atoms.
Nd4Ge13 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to two equivalent Ge(1), two equivalent Ge(5), two equivalent Ge(9), four equivalent Ge(13), and four equivalent Ge(3) atoms. Both Nd(1)-Ge(1) bond lengths are 3.56 Å. Both Nd(1)-Ge(5) bond lengths are 3.62 Å. Both Nd(1)-Ge(9) bond lengths are 3.49 Å. All Nd(1)-Ge(13) bond lengths are 3.15 Å. All Nd(1)-Ge(3) bond lengths are 3.19 Å. In the second Nd site, Nd(2) is bonded in a 10-coordinate geometry to two equivalent Ge(10), two equivalent Ge(2), two equivalent Ge(6), and four equivalent Ge(4) atoms. Both Nd(2)-Ge(10) bond lengths are 3.10 Å. Both Nd(2)-Ge(2) bond lengths are 3.38 Å. Both Nd(2)-Ge(6) bond lengths are 3.15 Å. All Nd(2)-Ge(4) bond lengths are 3.08 Å. In the third Nd site, Nd(3) is bonded in a 10-coordinate geometry to two equivalent Ge(11), two equivalent Ge(3), two equivalent Ge(7), and four equivalent Ge(1) atoms. Both Nd(3)-Ge(11) bond lengths are 3.06 Å. Both Nd(3)-Ge(3) bond lengths are 3.23 Å. Both Nd(3)-Ge(7) bond lengths are 3.09 Å. All Nd(3)-Ge(1) bond lengths are 3.03 Å. In the fourth Nd site, Nd(4) is bonded in a 10-coordinate geometry to two equivalent Ge(12), two equivalent Ge(4), two equivalent Ge(8), and four equivalent Ge(2) atoms. Both Nd(4)-Ge(12) bond lengths are 3.09 Å. Both Nd(4)-Ge(4) bond lengths are 3.30 Å. Both Nd(4)-Ge(8) bond lengths are 3.07 Å. All Nd(4)-Ge(2) bond lengths are 3.04 Å. There are thirteen inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), four equivalent Nd(3), and two equivalent Ge(3) atoms. Both Ge(1)-Ge(3) bond lengths are 2.53 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Nd(2), four equivalent Nd(4), and two equivalent Ge(4) atoms. Both Ge(2)-Ge(4) bond lengths are 2.57 Å. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Nd(3), four equivalent Nd(1), one Ge(13), and two equivalent Ge(1) atoms. The Ge(3)-Ge(13) bond length is 2.60 Å. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Nd(4), four equivalent Nd(2), and two equivalent Ge(2) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Nd(1), one Ge(8), two equivalent Ge(13), and four equivalent Ge(9) atoms. The Ge(5)-Ge(8) bond length is 2.54 Å. Both Ge(5)-Ge(13) bond lengths are 2.64 Å. All Ge(5)-Ge(9) bond lengths are 2.89 Å. In the sixth Ge site, Ge(6) is bonded in a 7-coordinate geometry to two equivalent Nd(2), one Ge(7), and four equivalent Ge(10) atoms. The Ge(6)-Ge(7) bond length is 2.51 Å. All Ge(6)-Ge(10) bond lengths are 2.89 Å. In the seventh Ge site, Ge(7) is bonded in a 7-coordinate geometry to two equivalent Nd(3), one Ge(6), and four equivalent Ge(11) atoms. All Ge(7)-Ge(11) bond lengths are 2.89 Å. In the eighth Ge site, Ge(8) is bonded in a 7-coordinate geometry to two equivalent Nd(4), one Ge(5), and four equivalent Ge(12) atoms. All Ge(8)-Ge(12) bond lengths are 2.89 Å. In the ninth Ge site, Ge(9) is bonded in a 9-coordinate geometry to two equivalent Nd(1), one Ge(12), two equivalent Ge(13), and four equivalent Ge(5) atoms. The Ge(9)-Ge(12) bond length is 2.56 Å. Both Ge(9)-Ge(13) bond lengths are 2.62 Å. In the tenth Ge site, Ge(10) is bonded in a 7-coordinate geometry to two equivalent Nd(2), one Ge(11), and four equivalent Ge(6) atoms. The Ge(10)-Ge(11) bond length is 2.49 Å. In the eleventh Ge site, Ge(11) is bonded in a 7-coordinate geometry to two equivalent Nd(3), one Ge(10), and four equivalent Ge(7) atoms. In the twelfth Ge site, Ge(12) is bonded in a 7-coordinate geometry to two equivalent Nd(4), one Ge(9), and four equivalent Ge(8) atoms. In the thirteenth Ge site, Ge(13) is bonded in a 9-coordinate geometry to four equivalent Nd(1), one Ge(3), two equivalent Ge(5), and two equivalent Ge(9) atoms.