Zn(C3H3N2)2 crystallizes in the tetragonal P4_2/mnm space group. Zn(1) is bonded in a tetrahedral geometry to one N(1), one N(2), one N(3), and one N(4) atom. The Zn(1)-N(1) bond length is 1.98 Å. The Zn(1)-N(2) bond length is 1.99 Å. The Zn(1)-N(3) bond length is 1.97 Å. The Zn(1)-N(4) bond length is 1.99 Å. There are seven inequivalent C sites. In the first C site, C(6) is bonded in a trigonal planar geometry to two equivalent N(1) and one H(6) atom. Both C(6)-N(1) bond lengths are 1.33 Å. The C(6)-H(6) bond length is 0.93 Å. In the second C site, C(7) is bonded in a trigonal planar geometry to two equivalent N(2) and one H(7) atom. Both C(7)-N(2) bond lengths are 1.33 Å. The C(7)-H(7) bond length is 0.93 Å. In the third 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 0.93 Å. In the fourth C site, C(2) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(2) atom. The C(2)-N(2) bond length is 1.38 Å. The C(2)-H(2) bond length is 0.93 Å. In the fifth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(3) atom. The C(3)-N(3) bond length is 1.36 Å. The C(3)-H(3) bond length is 0.93 Å. In the sixth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(4) atom. The C(4)-N(4) bond length is 1.36 Å. The C(4)-H(4) bond length is 0.93 Å. In the seventh C site, C(5) is bonded in a trigonal planar geometry to one N(3), one N(4), and one H(5) atom. The C(5)-N(3) bond length is 1.32 Å. The C(5)-N(4) bond length is 1.33 Å. The C(5)-H(5) bond length is 0.93 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(1), and one C(6) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(1), one C(2), and one C(7) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Zn(1), one C(3), 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(4), and one C(5) atom. There are seven 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(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(6) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(7) atom. Linkers: 32 C1=CN=C[N]1. Metal clusters: 16 [Zn]. The MOF has largest included sphere 9.00 A, density 0.85 g/cm3, surface area 4607.67 m2/g, accessible volume 0.74 cm3/g