HgC4H4(NBr)2(C5H5N)2 is Indium-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two C5H5N clusters and two HgC4H4(NBr)2 clusters. In one of the C5H5N clusters, there are five inequivalent C sites. In the first C site, C(2) is bonded in a distorted single-bond geometry to one C(3) and one H(2) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-H(2) bond length is 1.09 Å. In the second C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.48 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(3) atom. The C(4)-H(3) bond length is 1.09 Å. In the fourth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(3), one C(7), and one N(2) atom. The C(6)-C(7) bond length is 1.50 Å. The C(6)-N(2) bond length is 1.30 Å. In the fifth C site, C(7) is bonded in a trigonal non-coplanar geometry to one C(6), one H(5), one H(6), and one H(7) atom. The C(7)-H(5) bond length is 1.09 Å. The C(7)-H(6) bond length is 1.10 Å. The C(7)-H(7) bond length is 1.10 Å. N(2) is bonded in a distorted bent 120 degrees geometry to one C(6) and one N(2) atom. The N(2)-N(2) bond length is 1.37 Å. There are five inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(7) is bonded in a single-bond geometry to one C(7) atom. In one of the C5H5N clusters, there are five inequivalent C sites. In the first C site, C(14) is bonded in a trigonal non-coplanar geometry to one C(13), one H(12), one H(13), and one H(14) atom. The C(14)-C(13) bond length is 1.50 Å. The C(14)-H(12) bond length is 1.09 Å. The C(14)-H(13) bond length is 1.10 Å. The C(14)-H(14) bond length is 1.10 Å. In the second C site, C(9) is bonded in a distorted single-bond geometry to one C(10) and one H(9) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-H(9) bond length is 1.09 Å. In the third C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(9) atom. The C(10)-C(11) bond length is 1.40 Å. The C(10)-C(13) bond length is 1.48 Å. In the fourth C site, C(11) is bonded in a distorted single-bond geometry to one C(10) and one H(10) atom. The C(11)-H(10) bond length is 1.09 Å. In the fifth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(10), one C(14), and one N(3) atom. The C(13)-N(3) bond length is 1.30 Å. N(3) is bonded in a distorted bent 120 degrees geometry to one C(13) and one N(3) atom. The N(3)-N(3) bond length is 1.37 Å. There are five inequivalent H sites. In the first H site, H(9) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(10) is bonded in a single-bond geometry to one C(11) atom. In the third H site, H(12) is bonded in a single-bond geometry to one C(14) atom. In the fourth H site, H(13) is bonded in a single-bond geometry to one C(14) atom. In the fifth H site, H(14) is bonded in a single-bond geometry to one C(14) atom. In each HgC4H4(NBr)2 cluster, Hg(1) is bonded in a distorted tetrahedral geometry to one N(1), one N(4), one Br(1), and one Br(2) atom. The Hg(1)-N(1) bond length is 2.49 Å. The Hg(1)-N(4) bond length is 2.50 Å. The Hg(1)-Br(1) bond length is 2.54 Å. The Hg(1)-Br(2) bond length is 2.51 Å. There are four inequivalent C sites. In the first C site, C(5) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(4) atom. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(4) bond length is 1.09 Å. In the second C site, C(8) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(8) atom. The C(8)-N(4) bond length is 1.35 Å. The C(8)-H(8) bond length is 1.09 Å. In the third C site, C(12) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(11) atom. The C(12)-N(4) bond length is 1.34 Å. The C(12)-H(11) bond length is 1.09 Å. In the fourth C site, C(1) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(1) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.09 Å. There are two inequivalent N sites. In the first N site, N(4) is bonded in a distorted trigonal planar geometry to one Hg(1), one C(12), and one C(8) atom. In the second N site, N(1) is bonded in a distorted trigonal planar geometry to one Hg(1), one C(1), and one C(5) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(8) is bonded in a single-bond geometry to one C(8) atom. In the fourth H site, H(11) is bonded in a single-bond geometry to one C(12) 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: 2 [CH]/[C]=C(/C)[N][N][C](C)c1ccncc1 ,1 C[C]([N][N][C](C)c1ccncc1)c1ccncc1. Metal clusters: . The MOF has largest included sphere 2.09 A, density 2.42 g/cm3, surface area 3353.49 m2/g, accessible volume 0.13 cm3/g