Ba(HgTl)2 crystallizes in the tetragonal P4_2/mnm space group. Ba(1) is bonded in a 12-coordinate geometry to four equivalent Hg(1), five equivalent Hg(2), and six equivalent Tl(1) atoms. There are two inequivalent Hg sites. In the first Hg site, Hg(2) is bonded in a 10-coordinate geometry to five equivalent Ba(1), one Hg(2), two equivalent Hg(1), and two equivalent Tl(1) atoms. In the second Hg site, Hg(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1), two equivalent Hg(2), and two equivalent Tl(1) atoms. Tl(1) is bonded in a 10-coordinate geometry to three equivalent Ba(1), one Hg(1), one Hg(2), and five equivalent Tl(1) atoms.
Ba(HgTl)2 crystallizes in the tetragonal P4_2/mnm space group. Ba(1) is bonded in a 12-coordinate geometry to four equivalent Hg(1), five equivalent Hg(2), and six equivalent Tl(1) atoms. There are two shorter (3.67 Å) and two longer (3.75 Å) Ba(1)-Hg(1) bond lengths. There are four shorter (3.80 Å) and one longer (4.03 Å) Ba(1)-Hg(2) bond length. There are four shorter (3.74 Å) and two longer (4.23 Å) Ba(1)-Tl(1) bond lengths. There are two inequivalent Hg sites. In the first Hg site, Hg(2) is bonded in a 10-coordinate geometry to five equivalent Ba(1), one Hg(2), two equivalent Hg(1), and two equivalent Tl(1) atoms. The Hg(2)-Hg(2) bond length is 2.99 Å. Both Hg(2)-Hg(1) bond lengths are 2.98 Å. Both Hg(2)-Tl(1) bond lengths are 3.24 Å. In the second Hg site, Hg(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1), two equivalent Hg(2), and two equivalent Tl(1) atoms. Both Hg(1)-Tl(1) bond lengths are 3.18 Å. Tl(1) is bonded in a 10-coordinate geometry to three equivalent Ba(1), one Hg(1), one Hg(2), and five equivalent Tl(1) atoms. There is one shorter (3.19 Å) and four longer (3.45 Å) Tl(1)-Tl(1) bond lengths.