CoC8H16(N3O2)2 crystallizes in the monoclinic C2/c space group. Co(1) is bonded to two equivalent N(1), two equivalent N(2), and two equivalent O(2) atoms to form CoN4O2 octahedra that share corners with two equivalent C(2)H2N2 tetrahedra, corners with two equivalent C(3)H2N2 tetrahedra, and corners with two equivalent C(4)H2N2 tetrahedra. Both Co(1)-N(1) bond lengths are 2.02 Å. Both Co(1)-N(2) bond lengths are 2.32 Å. Both Co(1)-O(2) bond lengths are 2.09 Å. There are five inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one N(1) and one O(1) atom. The C(1)-N(1) bond length is 1.19 Å. The C(1)-O(1) bond length is 1.23 Å. In the second C site, C(2) is bonded to one N(2), one N(3), one H(3), and one H(4) atom to form CH2N2 tetrahedra that share  a cornercorner with one Co(1)N4O2 octahedra,  a cornercorner with one C(3)H2N2 tetrahedra,  a cornercorner with one C(5)H2N2 tetrahedra, and corners with two equivalent C(4)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 65°. The C(2)-N(2) bond length is 1.48 Å. The C(2)-N(3) bond length is 1.48 Å. The C(2)-H(3) bond length is 1.10 Å. The C(2)-H(4) bond length is 1.10 Å. In the third C site, C(3) is bonded to two equivalent N(2) and two equivalent H(5) atoms to form CH2N2 tetrahedra that share corners with two equivalent Co(1)N4O2 octahedra, corners with two equivalent C(2)H2N2 tetrahedra, and corners with two equivalent C(4)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 70°. Both C(3)-N(2) bond lengths are 1.48 Å. Both C(3)-H(5) bond lengths are 1.09 Å. In the fourth C site, C(4) is bonded to one N(2), one N(3), one H(6), and one H(7) atom to form CH2N2 tetrahedra that share  a cornercorner with one Co(1)N4O2 octahedra,  a cornercorner with one C(3)H2N2 tetrahedra,  a cornercorner with one C(5)H2N2 tetrahedra, and corners with two equivalent C(2)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 74°. The C(4)-N(2) bond length is 1.48 Å. The C(4)-N(3) bond length is 1.47 Å. The C(4)-H(6) bond length is 1.10 Å. The C(4)-H(7) bond length is 1.09 Å. In the fifth C site, C(5) is bonded to two equivalent N(3) and two equivalent H(8) atoms to form corner-sharing CH2N2 tetrahedra. Both C(5)-N(3) bond lengths are 1.48 Å. Both C(5)-H(8) bond lengths are 1.10 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Co(1) and one C(1) atom. In the second N site, N(2) is bonded to one Co(1), one C(2), one C(3), and one C(4) atom to form NCoC3 tetrahedra that share corners with two equivalent N(2)CoC3 tetrahedra and corners with two equivalent N(3)HC3 tetrahedra. In the third N site, N(3) is bonded to one C(2), one C(4), one C(5), and one H(1) atom to form distorted NHC3 tetrahedra that share  a cornercorner with one N(3)HC3 tetrahedra and corners with two equivalent N(2)CoC3 tetrahedra. The N(3)-H(1) bond length is 1.73 Å. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(3) and one O(2) atom. The H(1)-O(2) bond length is 1.01 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(4) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted water-like geometry to one Co(1), one H(1), and one H(2) atom. In the second O site, O(1) is bonded in a single-bond geometry to one C(1) atom. Linkers: 2 C1N2CN3CN1CN(C2)C3. Metal clusters: 2 [Co]. The MOF has largest included sphere 1.91 A, density 1.75 g/cm3, surface area 3816.92 m2/g, accessible volume 0.09 cm3/g