YPtGe2 crystallizes in the orthorhombic Immm space group. There are two inequivalent Y sites. In the first Y site, Y(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 Y site, Y(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 Y(1), three equivalent Y(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 7-coordinate geometry to four equivalent Y(1), two equivalent Pt(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(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 Y(1), three equivalent Y(2), three equivalent Pt(1), and one Ge(3) atom.
YPtGe2 crystallizes in the orthorhombic Immm space group. There are two inequivalent Y sites. In the first Y site, Y(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 Y(1)-Pt(1) bond lengths are 3.27 Å. Both Y(1)-Ge(3) bond lengths are 3.41 Å. All Y(1)-Ge(1) bond lengths are 3.40 Å. All Y(1)-Ge(2) bond lengths are 3.26 Å. In the second Y site, Y(2) is bonded in a 14-coordinate geometry to six equivalent Pt(1), two equivalent Ge(2), and six equivalent Ge(3) atoms. There are four shorter (3.23 Å) and two longer (3.29 Å) Y(2)-Pt(1) bond lengths. Both Y(2)-Ge(2) bond lengths are 3.04 Å. There are four shorter (3.02 Å) and two longer (3.08 Å) Y(2)-Ge(3) bond lengths. Pt(1) is bonded in a 10-coordinate geometry to two equivalent Y(1), three equivalent Y(2), one Ge(1), one Ge(2), and three equivalent Ge(3) atoms. The Pt(1)-Ge(1) bond length is 2.51 Å. The Pt(1)-Ge(2) bond length is 2.51 Å. There are two shorter (2.50 Å) and one longer (2.65 Å) Pt(1)-Ge(3) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent Y(1), two equivalent Pt(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.43 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), two equivalent Pt(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.43 Å. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Y(1), three equivalent Y(2), three equivalent Pt(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.65 Å.