Hg12S8Br7Br crystallizes in the monoclinic C2/m space group. The structure consists of two hydrogen bromide atoms inside a Hg12S8Br7 framework. In the Hg12S8Br7 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(2), and one Br(5) atom. In the second Hg site, Hg(2) is bonded in a 2-coordinate geometry to one S(1), one S(2), one Br(4), and two equivalent Br(1) atoms. 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 Br(5) atom. In the fourth Hg site, Hg(4) is bonded in a 3-coordinate geometry to two equivalent S(1), one Br(1), and one Br(2) atom. 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 T-shaped geometry to one Hg(1), one Hg(2), and one Hg(3) atom. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a 6-coordinate geometry to one Hg(3), one Hg(4), and four equivalent Hg(2) atoms. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one Hg(4) and two equivalent Hg(1) atoms. In the third Br site, Br(4) is bonded in a square co-planar geometry to four equivalent Hg(2) atoms. In the fourth Br site, Br(5) is bonded in a trigonal non-coplanar geometry to one Hg(3) and two equivalent Hg(1) atoms.
Hg12S8Br7Br crystallizes in the monoclinic C2/m space group. The structure consists of two hydrogen bromide atoms inside a Hg12S8Br7 framework. In the Hg12S8Br7 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(2), and one Br(5) atom. The Hg(1)-S(1) bond length is 2.44 Å. The Hg(1)-S(2) bond length is 2.44 Å. The Hg(1)-Br(2) bond length is 3.11 Å. The Hg(1)-Br(5) bond length is 2.92 Å. In the second Hg site, Hg(2) is bonded in a 2-coordinate geometry to one S(1), one S(2), one Br(4), and two equivalent Br(1) atoms. The Hg(2)-S(1) bond length is 2.41 Å. The Hg(2)-S(2) bond length is 2.41 Å. The Hg(2)-Br(4) bond length is 3.26 Å. There is one shorter (3.14 Å) and one longer (3.30 Å) Hg(2)-Br(1) bond length. 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 Br(5) atom. Both Hg(3)-S(2) bond lengths are 2.43 Å. The Hg(3)-Br(1) bond length is 3.26 Å. The Hg(3)-Br(5) bond length is 2.91 Å. In the fourth Hg site, Hg(4) is bonded in a 3-coordinate geometry to two equivalent S(1), one Br(1), and one Br(2) atom. Both Hg(4)-S(1) bond lengths are 2.43 Å. The Hg(4)-Br(1) bond length is 3.23 Å. The Hg(4)-Br(2) bond length is 2.98 Å. 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 T-shaped geometry to one Hg(1), one Hg(2), and one Hg(3) atom. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a 6-coordinate geometry to one Hg(3), one Hg(4), and four equivalent Hg(2) atoms. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one Hg(4) and two equivalent Hg(1) atoms. In the third Br site, Br(4) is bonded in a square co-planar geometry to four equivalent Hg(2) atoms. In the fourth Br site, Br(5) is bonded in a trigonal non-coplanar geometry to one Hg(3) and two equivalent Hg(1) atoms.