Y7Pt3 crystallizes in the orthorhombic Cmc2_1 space group. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded in a 3-coordinate geometry to one Pt(1) and two equivalent Pt(2) atoms. In the second Y site, Y(2) is bonded in a 3-coordinate geometry to one Pt(1) and two equivalent Pt(2) atoms. In the third Y site, Y(3) is bonded in a 3-coordinate geometry to one Pt(1) and two equivalent Pt(2) atoms. In the fourth Y site, Y(4) is bonded in a distorted water-like geometry to two equivalent Pt(2) atoms. In the fifth Y site, Y(5) is bonded in a distorted water-like geometry to one Pt(1) and one Pt(2) atom. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to one Y(1), one Y(2), two equivalent Y(3), and two equivalent Y(5) atoms. In the second Pt site, Pt(2) is bonded in a 6-coordinate geometry to one Y(1), one Y(2), one Y(4), one Y(5), and two equivalent Y(3) atoms.
Y7Pt3 crystallizes in the orthorhombic Cmc2_1 space group. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded in a 3-coordinate geometry to one Pt(1) and two equivalent Pt(2) atoms. The Y(1)-Pt(1) bond length is 2.89 Å. Both Y(1)-Pt(2) bond lengths are 2.89 Å. In the second Y site, Y(2) is bonded in a 3-coordinate geometry to one Pt(1) and two equivalent Pt(2) atoms. The Y(2)-Pt(1) bond length is 2.91 Å. Both Y(2)-Pt(2) bond lengths are 2.92 Å. In the third Y site, Y(3) is bonded in a 3-coordinate geometry to one Pt(1) and two equivalent Pt(2) atoms. The Y(3)-Pt(1) bond length is 2.92 Å. There is one shorter (2.91 Å) and one longer (2.92 Å) Y(3)-Pt(2) bond length. In the fourth Y site, Y(4) is bonded in a distorted water-like geometry to two equivalent Pt(2) atoms. Both Y(4)-Pt(2) bond lengths are 2.86 Å. In the fifth Y site, Y(5) is bonded in a distorted water-like geometry to one Pt(1) and one Pt(2) atom. The Y(5)-Pt(1) bond length is 2.86 Å. The Y(5)-Pt(2) bond length is 2.86 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to one Y(1), one Y(2), two equivalent Y(3), and two equivalent Y(5) atoms. In the second Pt site, Pt(2) is bonded in a 6-coordinate geometry to one Y(1), one Y(2), one Y(4), one Y(5), and two equivalent Y(3) atoms.