Nd4Ge7 crystallizes in the orthorhombic C222_1 space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. In the second Nd site, Nd(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. In the third Nd site, Nd(3) is bonded in a 9-coordinate geometry to one Ge(1), two equivalent Ge(4), four equivalent Ge(2), and four equivalent Ge(3) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), two equivalent Nd(3), and two equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Nd(1), one Nd(2), four equivalent Nd(3), one Ge(2), one Ge(3), and one Ge(4) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Nd(1), one Nd(2), four equivalent Nd(3), one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), two equivalent Nd(3), one Ge(2), one Ge(3), and one Ge(4) atom.
Nd4Ge7 crystallizes in the orthorhombic C222_1 space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. Both Nd(1)-Ge(1) bond lengths are 3.15 Å. Both Nd(1)-Ge(2) bond lengths are 3.08 Å. Both Nd(1)-Ge(3) bond lengths are 3.19 Å. There are two shorter (3.23 Å) and two longer (3.29 Å) Nd(1)-Ge(4) bond lengths. In the second Nd site, Nd(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. Both Nd(2)-Ge(1) bond lengths are 3.14 Å. Both Nd(2)-Ge(2) bond lengths are 3.09 Å. Both Nd(2)-Ge(3) bond lengths are 3.16 Å. There are two shorter (3.17 Å) and two longer (3.35 Å) Nd(2)-Ge(4) bond lengths. In the third Nd site, Nd(3) is bonded in a 9-coordinate geometry to one Ge(1), two equivalent Ge(4), four equivalent Ge(2), and four equivalent Ge(3) atoms. The Nd(3)-Ge(1) bond length is 3.29 Å. There is one shorter (3.07 Å) and one longer (3.08 Å) Nd(3)-Ge(4) bond length. There are a spread of Nd(3)-Ge(2) bond distances ranging from 3.07-3.73 Å. There are a spread of Nd(3)-Ge(3) bond distances ranging from 3.09-3.28 Å. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), two equivalent Nd(3), and two equivalent Ge(3) atoms. Both Ge(1)-Ge(3) bond lengths are 2.57 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Nd(1), one Nd(2), four equivalent Nd(3), one Ge(2), one Ge(3), and one Ge(4) atom. The Ge(2)-Ge(2) bond length is 2.97 Å. The Ge(2)-Ge(3) bond length is 2.57 Å. The Ge(2)-Ge(4) bond length is 2.76 Å. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Nd(1), one Nd(2), four equivalent Nd(3), one Ge(1), one Ge(2), and one Ge(4) atom. The Ge(3)-Ge(4) bond length is 2.61 Å. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), two equivalent Nd(3), one Ge(2), one Ge(3), and one Ge(4) atom. The Ge(4)-Ge(4) bond length is 2.46 Å.