Pt7Zn12 crystallizes in the orthorhombic Pbam space group. There are four inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 10-coordinate geometry to two equivalent Zn(1), two equivalent Zn(2), two equivalent Zn(4), two equivalent Zn(5), and two equivalent Zn(6) atoms. In the second Pt site, Pt(4) is bonded in a distorted body-centered cubic geometry to four equivalent Zn(1) and four equivalent Zn(3) atoms. In the third Pt site, Pt(1) is bonded in a 10-coordinate geometry to two equivalent Zn(1), two equivalent Zn(4), two equivalent Zn(5), and four equivalent Zn(3) atoms. In the fourth Pt site, Pt(2) is bonded in a 8-coordinate geometry to two equivalent Zn(4), two equivalent Zn(6), and four equivalent Zn(2) atoms. There are seven inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 11-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), two equivalent Pt(4), one Zn(3), one Zn(4), one Zn(5), and two equivalent Zn(1) atoms. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent Pt(3), four equivalent Pt(2), and one Zn(4) atom. In the third Zn site, Zn(3) is bonded in a 11-coordinate geometry to two equivalent Pt(4), four equivalent Pt(1), one Zn(1), one Zn(5), and three equivalent Zn(3) atoms. In the fourth Zn site, Zn(4) is bonded in a 11-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), one Zn(1), one Zn(2), one Zn(5), and two equivalent Zn(4) atoms. In the fifth Zn site, Zn(5) is bonded in a 4-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), one Zn(1), one Zn(3), and one Zn(4) atom. In the sixth Zn site, Zn(5) is bonded in a 4-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), one Zn(1), one Zn(3), and one Zn(4) atom. In the seventh Zn site, Zn(6) is bonded in a 4-coordinate geometry to two equivalent Pt(2) and two equivalent Pt(3) atoms.
Pt7Zn12 crystallizes in the orthorhombic Pbam space group. There are four inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 10-coordinate geometry to two equivalent Zn(1), two equivalent Zn(2), two equivalent Zn(4), two equivalent Zn(5), and two equivalent Zn(6) atoms. Both Pt(3)-Zn(1) bond lengths are 2.65 Å. Both Pt(3)-Zn(2) bond lengths are 2.66 Å. Both Pt(3)-Zn(4) bond lengths are 2.90 Å. Both Pt(3)-Zn(5) bond lengths are 2.60 Å. Both Pt(3)-Zn(6) bond lengths are 2.67 Å. In the second Pt site, Pt(4) is bonded in a distorted body-centered cubic geometry to four equivalent Zn(1) and four equivalent Zn(3) atoms. All Pt(4)-Zn(1) bond lengths are 2.63 Å. All Pt(4)-Zn(3) bond lengths are 2.62 Å. In the third Pt site, Pt(1) is bonded in a 10-coordinate geometry to two equivalent Zn(1), two equivalent Zn(4), two equivalent Zn(5), and four equivalent Zn(3) atoms. Both Pt(1)-Zn(1) bond lengths are 2.75 Å. Both Pt(1)-Zn(4) bond lengths are 2.67 Å. Both Pt(1)-Zn(5) bond lengths are 2.60 Å. There are two shorter (2.69 Å) and two longer (2.76 Å) Pt(1)-Zn(3) bond lengths. In the fourth Pt site, Pt(2) is bonded in a 8-coordinate geometry to two equivalent Zn(4), two equivalent Zn(6), and four equivalent Zn(2) atoms. Both Pt(2)-Zn(4) bond lengths are 2.66 Å. Both Pt(2)-Zn(6) bond lengths are 2.64 Å. All Pt(2)-Zn(2) bond lengths are 2.64 Å. There are seven inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 11-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), two equivalent Pt(4), one Zn(3), one Zn(4), one Zn(5), and two equivalent Zn(1) atoms. The Zn(1)-Zn(3) bond length is 2.65 Å. The Zn(1)-Zn(4) bond length is 2.68 Å. The Zn(1)-Zn(5) bond length is 2.77 Å. Both Zn(1)-Zn(1) bond lengths are 2.78 Å. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent Pt(3), four equivalent Pt(2), and one Zn(4) atom. The Zn(2)-Zn(4) bond length is 2.64 Å. In the third Zn site, Zn(3) is bonded in a 11-coordinate geometry to two equivalent Pt(4), four equivalent Pt(1), one Zn(1), one Zn(5), and three equivalent Zn(3) atoms. The Zn(3)-Zn(5) bond length is 2.71 Å. There is one shorter (2.59 Å) and two longer (2.78 Å) Zn(3)-Zn(3) bond lengths. In the fourth Zn site, Zn(4) is bonded in a 11-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), one Zn(1), one Zn(2), one Zn(5), and two equivalent Zn(4) atoms. The Zn(4)-Zn(5) bond length is 2.90 Å. Both Zn(4)-Zn(4) bond lengths are 2.78 Å. In the fifth Zn site, Zn(5) is bonded in a 4-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), one Zn(1), one Zn(3), and one Zn(4) atom. In the sixth Zn site, Zn(5) is bonded in a 4-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), one Zn(1), one Zn(3), and one Zn(4) atom. Both Zn(5)-Pt(1) bond lengths are 2.60 Å. Both Zn(5)-Pt(3) bond lengths are 2.60 Å. The Zn(5)-Zn(1) bond length is 2.77 Å. The Zn(5)-Zn(3) bond length is 2.71 Å. The Zn(5)-Zn(4) bond length is 2.90 Å. In the seventh Zn site, Zn(6) is bonded in a 4-coordinate geometry to two equivalent Pt(2) and two equivalent Pt(3) atoms.