Na4AuTl crystallizes in the orthorhombic Fmmm space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to four equivalent Au(1) and one Tl(1) atom. In the second Na site, Na(2) is bonded in a 11-coordinate geometry to two equivalent Na(3), three equivalent Na(2), and six equivalent Tl(1) atoms. In the third Na site, Na(3) is bonded in a 2-coordinate geometry to one Na(2), two equivalent Au(1), and three equivalent Tl(1) atoms. Au(1) is bonded in a 10-coordinate geometry to four equivalent Na(1), four equivalent Na(3), and two equivalent Au(1) atoms. Tl(1) is bonded in a 14-coordinate geometry to one Na(1), six equivalent Na(2), six equivalent Na(3), and one Tl(1) atom.
Na4AuTl crystallizes in the orthorhombic Fmmm space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to four equivalent Au(1) and one Tl(1) atom. All Na(1)-Au(1) bond lengths are 3.07 Å. The Na(1)-Tl(1) bond length is 3.31 Å. In the second Na site, Na(2) is bonded in a 11-coordinate geometry to two equivalent Na(3), three equivalent Na(2), and six equivalent Tl(1) atoms. Both Na(2)-Na(3) bond lengths are 3.28 Å. There are two shorter (3.27 Å) and one longer (3.31 Å) Na(2)-Na(2) bond length. There are four shorter (3.59 Å) and two longer (3.74 Å) Na(2)-Tl(1) bond lengths. In the third Na site, Na(3) is bonded in a 2-coordinate geometry to one Na(2), two equivalent Au(1), and three equivalent Tl(1) atoms. Both Na(3)-Au(1) bond lengths are 3.13 Å. There are two shorter (3.66 Å) and one longer (3.77 Å) Na(3)-Tl(1) bond length. Au(1) is bonded in a 10-coordinate geometry to four equivalent Na(1), four equivalent Na(3), and two equivalent Au(1) atoms. Both Au(1)-Au(1) bond lengths are 2.77 Å. Tl(1) is bonded in a 14-coordinate geometry to one Na(1), six equivalent Na(2), six equivalent Na(3), and one Tl(1) atom. The Tl(1)-Tl(1) bond length is 3.16 Å.