Y3Pt4Ge6 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 14-coordinate geometry to three equivalent Pt(2), three equivalent Pt(4), two equivalent Ge(5), three equivalent Ge(1), and three equivalent Ge(3) atoms. In the second Y site, Y(2) is bonded in a 15-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), two equivalent Pt(4), one Ge(1), one Ge(2), two equivalent Ge(4), two equivalent Ge(5), and three equivalent Ge(6) atoms. In the third Y site, Y(3) is bonded in a 15-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), one Ge(3), one Ge(6), two equivalent Ge(4), two equivalent Ge(5), and three equivalent Ge(2) atoms. There are four inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 5-coordinate geometry to two equivalent Y(2), two equivalent Y(3), one Ge(2), one Ge(4), and three equivalent Ge(6) atoms. In the second Pt site, Pt(2) is bonded in a 10-coordinate geometry to two equivalent Y(3), three equivalent Y(1), one Ge(4), one Ge(5), and three equivalent Ge(3) atoms. In the third Pt site, Pt(3) is bonded in a 5-coordinate geometry to two equivalent Y(2), two equivalent Y(3), one Ge(5), one Ge(6), and three equivalent Ge(2) atoms. In the fourth Pt site, Pt(4) is bonded in a 10-coordinate geometry to two equivalent Y(2), three equivalent Y(1), one Ge(4), one Ge(5), and three equivalent Ge(1) atoms. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Y(2), three equivalent Y(1), three equivalent Pt(4), and one Ge(3) atom. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Y(2), three equivalent Y(3), one Pt(1), and three equivalent Pt(3) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Y(3), three equivalent Y(1), three equivalent Pt(2), and one Ge(1) atom. In the fourth Ge site, Ge(4) is bonded in a distorted trigonal planar geometry to two equivalent Y(2), two equivalent Y(3), one Pt(1), one Pt(2), and one Pt(4) atom. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(2), two equivalent Y(3), one Pt(2), one Pt(3), and one Pt(4) atom. In the sixth Ge site, Ge(6) is bonded in a 4-coordinate geometry to one Y(3), three equivalent Y(2), one Pt(3), and three equivalent Pt(1) atoms.
Y3Pt4Ge6 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 14-coordinate geometry to three equivalent Pt(2), three equivalent Pt(4), two equivalent Ge(5), three equivalent Ge(1), and three equivalent Ge(3) atoms. There are two shorter (3.18 Å) and one longer (3.29 Å) Y(1)-Pt(2) bond length. There are two shorter (3.18 Å) and one longer (3.28 Å) Y(1)-Pt(4) bond length. Both Y(1)-Ge(5) bond lengths are 3.02 Å. There are two shorter (3.02 Å) and one longer (3.07 Å) Y(1)-Ge(1) bond length. There are two shorter (3.02 Å) and one longer (3.07 Å) Y(1)-Ge(3) bond length. In the second Y site, Y(2) is bonded in a 15-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), two equivalent Pt(4), one Ge(1), one Ge(2), two equivalent Ge(4), two equivalent Ge(5), and three equivalent Ge(6) atoms. Both Y(2)-Pt(1) bond lengths are 3.34 Å. Both Y(2)-Pt(3) bond lengths are 3.25 Å. Both Y(2)-Pt(4) bond lengths are 3.26 Å. The Y(2)-Ge(1) bond length is 3.37 Å. The Y(2)-Ge(2) bond length is 3.27 Å. Both Y(2)-Ge(4) bond lengths are 3.38 Å. Both Y(2)-Ge(5) bond lengths are 3.21 Å. There are two shorter (3.30 Å) and one longer (3.34 Å) Y(2)-Ge(6) bond length. In the third Y site, Y(3) is bonded in a 15-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), one Ge(3), one Ge(6), two equivalent Ge(4), two equivalent Ge(5), and three equivalent Ge(2) atoms. Both Y(3)-Pt(1) bond lengths are 3.37 Å. Both Y(3)-Pt(2) bond lengths are 3.28 Å. Both Y(3)-Pt(3) bond lengths are 3.27 Å. The Y(3)-Ge(3) bond length is 3.41 Å. The Y(3)-Ge(6) bond length is 3.35 Å. Both Y(3)-Ge(4) bond lengths are 3.40 Å. Both Y(3)-Ge(5) bond lengths are 3.22 Å. There are two shorter (3.20 Å) and one longer (3.28 Å) Y(3)-Ge(2) bond length. There are four inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 5-coordinate geometry to two equivalent Y(2), two equivalent Y(3), one Ge(2), one Ge(4), and three equivalent Ge(6) atoms. The Pt(1)-Ge(2) bond length is 2.50 Å. The Pt(1)-Ge(4) bond length is 2.40 Å. There is one shorter (2.50 Å) and two longer (2.51 Å) Pt(1)-Ge(6) bond lengths. In the second Pt site, Pt(2) is bonded in a 10-coordinate geometry to two equivalent Y(3), three equivalent Y(1), one Ge(4), one Ge(5), and three equivalent Ge(3) atoms. The Pt(2)-Ge(4) bond length is 2.49 Å. The Pt(2)-Ge(5) bond length is 2.53 Å. There are two shorter (2.47 Å) and one longer (2.66 Å) Pt(2)-Ge(3) bond length. In the third Pt site, Pt(3) is bonded in a 5-coordinate geometry to two equivalent Y(2), two equivalent Y(3), one Ge(5), one Ge(6), and three equivalent Ge(2) atoms. The Pt(3)-Ge(5) bond length is 2.46 Å. The Pt(3)-Ge(6) bond length is 2.48 Å. There is one shorter (2.49 Å) and two longer (2.50 Å) Pt(3)-Ge(2) bond lengths. In the fourth Pt site, Pt(4) is bonded in a 10-coordinate geometry to two equivalent Y(2), three equivalent Y(1), one Ge(4), one Ge(5), and three equivalent Ge(1) atoms. The Pt(4)-Ge(4) bond length is 2.50 Å. The Pt(4)-Ge(5) bond length is 2.53 Å. There are two shorter (2.46 Å) and one longer (2.66 Å) Pt(4)-Ge(1) bond length. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Y(2), three equivalent Y(1), three equivalent Pt(4), and one Ge(3) atom. The Ge(1)-Ge(3) bond length is 2.59 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Y(2), three equivalent Y(3), one Pt(1), and three equivalent Pt(3) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Y(3), three equivalent Y(1), three equivalent Pt(2), and one Ge(1) atom. In the fourth Ge site, Ge(4) is bonded in a distorted trigonal planar geometry to two equivalent Y(2), two equivalent Y(3), one Pt(1), one Pt(2), and one Pt(4) atom. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(2), two equivalent Y(3), one Pt(2), one Pt(3), and one Pt(4) atom. In the sixth Ge site, Ge(6) is bonded in a 4-coordinate geometry to one Y(3), three equivalent Y(2), one Pt(3), and three equivalent Pt(1) atoms.