Y2(Pt3Ge)3 crystallizes in the monoclinic C2/c space group. Y(1) is bonded in a 11-coordinate geometry to one Pt(3), two equivalent Pt(1), two equivalent Pt(4), three equivalent Pt(2), and three equivalent Pt(5) atoms. There are five inequivalent Pt sites. In the first Pt site, Pt(5) is bonded in a 6-coordinate geometry to three equivalent Y(1), one Ge(1), and two equivalent Ge(2) atoms. In the second Pt site, Pt(1) is bonded in a 2-coordinate geometry to two equivalent Y(1), one Ge(1), and one Ge(2) atom. In the third Pt site, Pt(2) is bonded in a 6-coordinate geometry to three equivalent Y(1), one Ge(1), and two equivalent Ge(2) atoms. In the fourth Pt site, Pt(3) is bonded in a 2-coordinate geometry to two equivalent Y(1) and two equivalent Ge(2) atoms. In the fifth Pt site, Pt(4) is bonded in a 3-coordinate geometry to two equivalent Y(1), one Ge(1), and two equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(4), and two equivalent Pt(5) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Pt(1), one Pt(3), two equivalent Pt(2), two equivalent Pt(4), and two equivalent Pt(5) atoms.
Y2(Pt3Ge)3 crystallizes in the monoclinic C2/c space group. Y(1) is bonded in a 11-coordinate geometry to one Pt(3), two equivalent Pt(1), two equivalent Pt(4), three equivalent Pt(2), and three equivalent Pt(5) atoms. The Y(1)-Pt(3) bond length is 3.14 Å. There is one shorter (3.11 Å) and one longer (3.16 Å) Y(1)-Pt(1) bond length. Both Y(1)-Pt(4) bond lengths are 2.98 Å. There are a spread of Y(1)-Pt(2) bond distances ranging from 2.94-3.07 Å. There is one shorter (2.94 Å) and two longer (3.02 Å) Y(1)-Pt(5) bond lengths. There are five inequivalent Pt sites. In the first Pt site, Pt(5) is bonded in a 6-coordinate geometry to three equivalent Y(1), one Ge(1), and two equivalent Ge(2) atoms. The Pt(5)-Ge(1) bond length is 2.67 Å. There is one shorter (2.54 Å) and one longer (2.68 Å) Pt(5)-Ge(2) bond length. In the second Pt site, Pt(1) is bonded in a 2-coordinate geometry to two equivalent Y(1), one Ge(1), and one Ge(2) atom. The Pt(1)-Ge(1) bond length is 2.49 Å. The Pt(1)-Ge(2) bond length is 2.46 Å. In the third Pt site, Pt(2) is bonded in a 6-coordinate geometry to three equivalent Y(1), one Ge(1), and two equivalent Ge(2) atoms. The Pt(2)-Ge(1) bond length is 2.65 Å. There is one shorter (2.52 Å) and one longer (2.71 Å) Pt(2)-Ge(2) bond length. In the fourth Pt site, Pt(3) is bonded in a 2-coordinate geometry to two equivalent Y(1) and two equivalent Ge(2) atoms. Both Pt(3)-Ge(2) bond lengths are 2.47 Å. In the fifth Pt site, Pt(4) is bonded in a 3-coordinate geometry to two equivalent Y(1), one Ge(1), and two equivalent Ge(2) atoms. The Pt(4)-Ge(1) bond length is 2.63 Å. There is one shorter (2.85 Å) and one longer (2.90 Å) Pt(4)-Ge(2) bond length. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(4), and two equivalent Pt(5) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Pt(1), one Pt(3), two equivalent Pt(2), two equivalent Pt(4), and two equivalent Pt(5) atoms.