NdPtGe2 crystallizes in the orthorhombic Immm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 14-coordinate geometry to four equivalent Pt(1), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Nd site, Nd(2) is bonded in a 14-coordinate geometry to six equivalent Pt(1), two equivalent Ge(2), and six equivalent Ge(3) atoms. Pt(1) is bonded in a 10-coordinate geometry to two equivalent Nd(1), three equivalent Nd(2), one Ge(1), one Ge(2), and three equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to four equivalent Nd(1) and two equivalent Pt(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Nd(2), four equivalent Nd(1), two equivalent Pt(1), and one Ge(2) atom. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Nd(1), three equivalent Nd(2), three equivalent Pt(1), and one Ge(3) atom.
NdPtGe2 crystallizes in the orthorhombic Immm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 14-coordinate geometry to four equivalent Pt(1), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms. All Nd(1)-Pt(1) bond lengths are 3.33 Å. Both Nd(1)-Ge(3) bond lengths are 3.44 Å. All Nd(1)-Ge(1) bond lengths are 3.45 Å. All Nd(1)-Ge(2) bond lengths are 3.31 Å. In the second Nd site, Nd(2) is bonded in a 14-coordinate geometry to six equivalent Pt(1), two equivalent Ge(2), and six equivalent Ge(3) atoms. All Nd(2)-Pt(1) bond lengths are 3.29 Å. Both Nd(2)-Ge(2) bond lengths are 3.09 Å. There are four shorter (3.06 Å) and two longer (3.09 Å) Nd(2)-Ge(3) bond lengths. Pt(1) is bonded in a 10-coordinate geometry to two equivalent Nd(1), three equivalent Nd(2), one Ge(1), one Ge(2), and three equivalent Ge(3) atoms. The Pt(1)-Ge(1) bond length is 2.52 Å. The Pt(1)-Ge(2) bond length is 2.56 Å. There are two shorter (2.52 Å) and one longer (2.69 Å) Pt(1)-Ge(3) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to four equivalent Nd(1) and two equivalent Pt(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Nd(2), four equivalent Nd(1), two equivalent Pt(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.49 Å. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Nd(1), three equivalent Nd(2), three equivalent Pt(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.70 Å.