Hg12S8Br5Cl2Br crystallizes in the monoclinic C2/m space group. The structure consists of two hydrogen bromide atoms inside a Hg12S8Br5Cl2 framework. In the Hg12S8Br5Cl2 framework, there are four inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted see-saw-like geometry to one S(1), one S(2), one Br(3), and one Cl(1) atom. In the second Hg site, Hg(2) is bonded in a 3-coordinate geometry to two equivalent S(1), one Br(1), and one Br(3) atom. In the third Hg site, Hg(3) is bonded in a distorted T-shaped geometry to two equivalent S(2), one Br(1), and one Cl(1) atom. In the fourth Hg site, Hg(4) is bonded in a distorted linear geometry to one S(1), one S(2), one Br(4), and two equivalent Br(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted T-shaped geometry to one Hg(1), one Hg(2), and one Hg(4) atom. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to one Hg(1), one Hg(3), and one Hg(4) atom. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a 6-coordinate geometry to one Hg(2), one Hg(3), and four equivalent Hg(4) atoms. In the second Br site, Br(3) is bonded in a 3-coordinate geometry to one Hg(2) and two equivalent Hg(1) atoms. In the third Br site, Br(4) is bonded in a distorted square co-planar geometry to four equivalent Hg(4) atoms. Cl(1) is bonded in a trigonal planar geometry to one Hg(3) and two equivalent Hg(1) atoms.
Hg12S8Br5Cl2Br crystallizes in the monoclinic C2/m space group. The structure consists of two hydrogen bromide atoms inside a Hg12S8Br5Cl2 framework. In the Hg12S8Br5Cl2 framework, there are four inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted see-saw-like geometry to one S(1), one S(2), one Br(3), and one Cl(1) atom. The Hg(1)-S(1) bond length is 2.46 Å. The Hg(1)-S(2) bond length is 2.46 Å. The Hg(1)-Br(3) bond length is 3.14 Å. The Hg(1)-Cl(1) bond length is 2.84 Å. In the second Hg site, Hg(2) is bonded in a 3-coordinate geometry to two equivalent S(1), one Br(1), and one Br(3) atom. Both Hg(2)-S(1) bond lengths are 2.46 Å. The Hg(2)-Br(1) bond length is 3.25 Å. The Hg(2)-Br(3) bond length is 2.97 Å. In the third Hg site, Hg(3) is bonded in a distorted T-shaped geometry to two equivalent S(2), one Br(1), and one Cl(1) atom. Both Hg(3)-S(2) bond lengths are 2.45 Å. The Hg(3)-Br(1) bond length is 3.34 Å. The Hg(3)-Cl(1) bond length is 2.83 Å. In the fourth Hg site, Hg(4) is bonded in a distorted linear geometry to one S(1), one S(2), one Br(4), and two equivalent Br(1) atoms. The Hg(4)-S(1) bond length is 2.44 Å. The Hg(4)-S(2) bond length is 2.44 Å. The Hg(4)-Br(4) bond length is 3.30 Å. There is one shorter (3.20 Å) and one longer (3.33 Å) Hg(4)-Br(1) bond length. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted T-shaped geometry to one Hg(1), one Hg(2), and one Hg(4) atom. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to one Hg(1), one Hg(3), and one Hg(4) atom. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a 6-coordinate geometry to one Hg(2), one Hg(3), and four equivalent Hg(4) atoms. In the second Br site, Br(3) is bonded in a 3-coordinate geometry to one Hg(2) and two equivalent Hg(1) atoms. In the third Br site, Br(4) is bonded in a distorted square co-planar geometry to four equivalent Hg(4) atoms. Cl(1) is bonded in a trigonal planar geometry to one Hg(3) and two equivalent Hg(1) atoms.