HgBr2(CH)4(C4N3H2)2 is Indium-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four 02329_fluka molecules, one mercuric bromide molecule, and one C4N3H2 cluster. In the C4N3H2 cluster, 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) atom. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(4) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(4) bond length is 1.09 Å. In the third C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one N(1) atom. The C(5)-C(6) bond length is 1.48 Å. The C(5)-N(1) bond length is 1.35 Å. In the fourth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one N(2), and one N(3) atom. The C(6)-N(2) bond length is 1.35 Å. The C(6)-N(3) bond length is 1.35 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one C(1) and one C(5) atom. In the second N site, N(2) is bonded in a distorted single-bond geometry to one C(6) and one N(3) atom. The N(2)-N(3) bond length is 1.31 Å. In the third N site, N(3) is bonded in a distorted bent 120 degrees geometry to one C(6) and one N(2) atom. There are two 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(4) atom. Linkers: 1 c1ccc(-c2nnc(-c3ccccn3)nn2)nc1 ,1 [CH]=C([N])C1=N[N]C(c2ccccn2)=N[N]1 ,1 [CH]=C([N])c1nnc(-c2ccccn2)nn1. Metal clusters: . The MOF has largest included sphere 1.92 A, density 2.68 g/cm3, surface area 2844.80 m2/g, accessible volume 0.07 cm3/g