ZnC5N4H3Br crystallizes in the orthorhombic P2_12_12_1 space group. Zn(1) is bonded in a tetrahedral geometry to one N(2), one N(3), one N(4), and one Br(1) atom. The Zn(1)-N(2) bond length is 2.01 Å. The Zn(1)-N(3) bond length is 2.01 Å. The Zn(1)-N(4) bond length is 2.08 Å. The Zn(1)-Br(1) bond length is 2.36 Å. There are five inequivalent C sites. In the first C site, C(5) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(3) atom. The C(5)-N(2) bond length is 1.35 Å. The C(5)-N(3) bond length is 1.35 Å. The C(5)-H(3) bond length is 1.09 Å. In the second C site, C(1) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one N(3) atom. The C(1)-C(4) bond length is 1.42 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-N(3) bond length is 1.37 Å. In the third C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(4), and one H(1) atom. The C(2)-N(1) bond length is 1.33 Å. The C(2)-N(4) bond length is 1.36 Å. The C(2)-H(1) bond length is 1.09 Å. In the fourth C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one N(4), and one H(2) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-N(4) bond length is 1.35 Å. The C(3)-H(2) bond length is 1.09 Å. In the fifth C site, C(4) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one N(2) atom. The C(4)-N(2) bond length is 1.38 Å. There are four 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(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(1), one C(4), and one C(5) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Zn(1), one C(1), and one C(5) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Zn(1), one C(2), and one C(3) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. Br(1) is bonded in a single-bond geometry to one Zn(1) atom. Linkers: 1 C1=NC=C2N=CN=C2[N]1 ,2 C1=N[C]2C(=[N]=CN=C2)[N]1 ,1 C1=[N]=c2c(=N1)cncn2. Metal clusters: 4 [Zn]Br. The MOF has largest included sphere 2.16 A, density 2.27 g/cm3, surface area 3363.13 m2/g, accessible volume 0.10 cm3/g