Co3C14H8(NO5)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one N(1), one O(1), one O(2), one O(5), and two equivalent O(3) atoms to form CoNO5 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  an edgeedge with one Co(1)NO5 octahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 59°. The Co(1)-N(1) bond length is 2.15 Å. The Co(1)-O(1) bond length is 2.17 Å. The Co(1)-O(2) bond length is 2.11 Å. The Co(1)-O(5) bond length is 2.09 Å. There is one shorter (2.09 Å) and one longer (2.11 Å) Co(1)-O(3) bond length. In the second Co site, Co(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 59°. Both Co(2)-O(2) bond lengths are 2.11 Å. Both Co(2)-O(3) bond lengths are 2.08 Å. Both Co(2)-O(4) bond lengths are 2.07 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one H(4) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(5) bond length is 1.38 Å. The C(1)-H(4) bond length is 0.92 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(4) bond length is 1.52 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(3)-H(3) bond length is 1.00 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(4) atom. The C(4)-O(1) bond length is 1.26 Å. The C(4)-O(4) bond length is 1.24 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(1), one C(7), and one N(1) atom. The C(5)-C(7) bond length is 1.51 Å. The C(5)-N(1) bond length is 1.35 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(2) atom. The C(6)-N(1) bond length is 1.34 Å. The C(6)-H(2) bond length is 0.89 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(2), and one O(5) atom. The C(7)-O(2) bond length is 1.26 Å. The C(7)-O(5) bond length is 1.24 Å. N(1) is bonded in a trigonal planar geometry to one Co(1), one C(5), and one C(6) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 0.79 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) 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(1) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(7) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Co(2), two equivalent Co(1), and one H(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(2) and one C(4) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Co(1) and one C(7) atom. Linkers: 4 [O]C(=O)c1ccnc(C([O])=O)c1. Metal clusters: 6 [Co]. The MOF has largest included sphere 6.84 A, density 1.42 g/cm3, surface area 2825.91 m2/g, accessible volume 0.40 cm3/g