Sr(HgTl)2 crystallizes in the tetragonal P4_2/mnm space group. Sr(1) is bonded in a 12-coordinate geometry to four equivalent Hg(1), four equivalent Hg(2), and four equivalent Tl(1) atoms. There are two inequivalent Hg sites. In the first Hg site, Hg(2) is bonded in a 9-coordinate geometry to four equivalent Sr(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 Sr(1), two equivalent Hg(2), and two equivalent Tl(1) atoms. Tl(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), one Hg(1), one Hg(2), and five equivalent Tl(1) atoms.
Sr(HgTl)2 crystallizes in the tetragonal P4_2/mnm space group. Sr(1) is bonded in a 12-coordinate geometry to four equivalent Hg(1), four equivalent Hg(2), and four equivalent Tl(1) atoms. There are two shorter (3.58 Å) and two longer (3.70 Å) Sr(1)-Hg(1) bond lengths. All Sr(1)-Hg(2) bond lengths are 3.69 Å. All Sr(1)-Tl(1) bond lengths are 3.65 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(2) is bonded in a 9-coordinate geometry to four equivalent Sr(1), one Hg(2), two equivalent Hg(1), and two equivalent Tl(1) atoms. The Hg(2)-Hg(2) bond length is 2.92 Å. Both Hg(2)-Hg(1) bond lengths are 2.91 Å. Both Hg(2)-Tl(1) bond lengths are 3.17 Å. In the second Hg site, Hg(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1), two equivalent Hg(2), and two equivalent Tl(1) atoms. Both Hg(1)-Tl(1) bond lengths are 3.14 Å. Tl(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), one Hg(1), one Hg(2), and five equivalent Tl(1) atoms. There is one shorter (3.20 Å) and four longer (3.38 Å) Tl(1)-Tl(1) bond lengths.