HgC8H8(N2Br)2 is beta Np structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four HgC8H8(N2Br)2 clusters. Hg(1) is bonded in a 6-coordinate geometry to two equivalent N(1), two equivalent N(2), one Br(1), and one Br(2) atom. Both Hg(1)-N(1) bond lengths are 2.73 Å. Both Hg(1)-N(2) bond lengths are 2.77 Å. The Hg(1)-Br(1) bond length is 2.56 Å. The Hg(1)-Br(2) bond length is 2.55 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(1,2) atom. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1,2) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(1,2) atom. The C(2)-N(1) bond length is 1.34 Å. The C(2)-H(1,2) bond length is 1.09 Å. In the third C site, C(4) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(4) atom. The C(4)-N(2) bond length is 1.34 Å. The C(4)-H(4) bond length is 1.09 Å. In the fourth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(3) atom. The C(3)-N(2) bond length is 1.34 Å. The C(3)-H(3) bond length is 1.09 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one Hg(1), one C(1), and one C(2) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one Hg(1), one C(3), and one C(4) atom. There are three inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(4) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a single-bond geometry to one Hg(1) atom. In the second Br site, Br(2) is bonded in a single-bond geometry to one Hg(1) atom. Linkers: 1 c1cnccn1. Metal clusters: . The MOF has largest included sphere 2.09 A, density 2.85 g/cm3, surface area 3071.26 m2/g, accessible volume 0.08 cm3/g