Nd2AlGe6 crystallizes in the monoclinic C2/m space group. Nd(1) is bonded in a 12-coordinate geometry to two equivalent Al(1), one Ge(4), one Ge(5), two equivalent Ge(3), three equivalent Ge(1), and three equivalent Ge(2) atoms. Al(1) is bonded in a 5-coordinate geometry to four equivalent Nd(1), one Ge(1), one Ge(4), one Ge(5), and two equivalent Ge(3) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Nd(1), one Al(1), one Ge(1), and one Ge(2) atom. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to six equivalent Nd(1), one Ge(1), and one Ge(2) atom. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Al(1), one Ge(3), one Ge(4), and one Ge(5) atom. In the fourth Ge site, Ge(4) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Al(1), one Ge(4), and two equivalent Ge(3) atoms. In the fifth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Al(1), one Ge(5), and two equivalent Ge(3) atoms.
Nd2AlGe6 crystallizes in the monoclinic C2/m space group. Nd(1) is bonded in a 12-coordinate geometry to two equivalent Al(1), one Ge(4), one Ge(5), two equivalent Ge(3), three equivalent Ge(1), and three equivalent Ge(2) atoms. There is one shorter (3.38 Å) and one longer (3.40 Å) Nd(1)-Al(1) bond length. The Nd(1)-Ge(4) bond length is 3.21 Å. The Nd(1)-Ge(5) bond length is 3.23 Å. Both Nd(1)-Ge(3) bond lengths are 3.16 Å. There are a spread of Nd(1)-Ge(1) bond distances ranging from 3.18-3.25 Å. There are a spread of Nd(1)-Ge(2) bond distances ranging from 3.14-3.39 Å. Al(1) is bonded in a 5-coordinate geometry to four equivalent Nd(1), one Ge(1), one Ge(4), one Ge(5), and two equivalent Ge(3) atoms. The Al(1)-Ge(1) bond length is 2.54 Å. The Al(1)-Ge(4) bond length is 2.58 Å. The Al(1)-Ge(5) bond length is 2.58 Å. Both Al(1)-Ge(3) bond lengths are 2.65 Å. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Nd(1), one Al(1), one Ge(1), and one Ge(2) atom. The Ge(1)-Ge(1) bond length is 2.57 Å. The Ge(1)-Ge(2) bond length is 2.60 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to six equivalent Nd(1), one Ge(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.64 Å. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Al(1), one Ge(3), one Ge(4), and one Ge(5) atom. The Ge(3)-Ge(3) bond length is 2.50 Å. The Ge(3)-Ge(4) bond length is 2.58 Å. The Ge(3)-Ge(5) bond length is 2.57 Å. In the fourth Ge site, Ge(4) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Al(1), one Ge(4), and two equivalent Ge(3) atoms. The Ge(4)-Ge(4) bond length is 2.50 Å. In the fifth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Al(1), one Ge(5), and two equivalent Ge(3) atoms. The Ge(5)-Ge(5) bond length is 2.51 Å.