CoC8H8(NO)4 crystallizes in the triclinic P1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in an octahedral geometry to one N(1), one N(2), one O(1), one O(2), one O(7), and one O(8) atom. The Co(1)-N(1) bond length is 2.02 Å. The Co(1)-N(2) bond length is 2.01 Å. The Co(1)-O(1) bond length is 2.08 Å. The Co(1)-O(2) bond length is 2.11 Å. The Co(1)-O(7) bond length is 2.27 Å. The Co(1)-O(8) bond length is 2.17 Å. In the second Co site, Co(2) is bonded in an octahedral geometry to one N(3), one N(4), one O(3), one O(4), one O(5), and one O(6) atom. The Co(2)-N(3) bond length is 1.91 Å. The Co(2)-N(4) bond length is 1.91 Å. The Co(2)-O(3) bond length is 1.97 Å. The Co(2)-O(4) bond length is 1.97 Å. The Co(2)-O(5) bond length is 2.19 Å. The Co(2)-O(6) bond length is 2.19 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(5), and one H(1) atom. The C(1)-C(5) bond length is 1.38 Å. The C(1)-N(5) bond length is 1.37 Å. The C(1)-H(1) bond length is 1.08 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(6), one N(6), and one H(2) atom. The C(2)-C(6) bond length is 1.38 Å. The C(2)-N(6) bond length is 1.38 Å. The C(2)-H(2) bond length is 1.08 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(7), one N(7), and one H(3) atom. The C(3)-C(7) bond length is 1.38 Å. The C(3)-N(7) bond length is 1.38 Å. The C(3)-H(3) bond length is 1.08 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(8), one N(8), and one H(4) atom. The C(4)-C(8) bond length is 1.38 Å. The C(4)-N(8) bond length is 1.38 Å. The C(4)-H(4) bond length is 1.08 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(1), one N(1), and one H(5) atom. The C(5)-N(1) bond length is 1.38 Å. The C(5)-H(5) bond length is 1.08 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(2), one N(2), and one H(6) atom. The C(6)-N(2) bond length is 1.38 Å. The C(6)-H(6) bond length is 1.08 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(3), and one H(7) atom. The C(7)-N(3) bond length is 1.38 Å. The C(7)-H(7) bond length is 1.08 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(4), one N(4), and one H(8) atom. The C(8)-N(4) bond length is 1.38 Å. The C(8)-H(8) bond length is 1.08 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one N(1), one N(5), and one H(13) atom. The C(9)-N(1) bond length is 1.33 Å. The C(9)-N(5) bond length is 1.35 Å. The C(9)-H(13) bond length is 1.08 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one N(2), one N(6), and one H(14) atom. The C(10)-N(2) bond length is 1.34 Å. The C(10)-N(6) bond length is 1.35 Å. The C(10)-H(14) bond length is 1.08 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one N(3), one N(7), and one H(15) atom. The C(11)-N(3) bond length is 1.34 Å. The C(11)-N(7) bond length is 1.35 Å. The C(11)-H(15) bond length is 1.08 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one N(4), one N(8), and one H(16) atom. The C(12)-N(4) bond length is 1.34 Å. The C(12)-N(8) bond length is 1.35 Å. The C(12)-H(16) bond length is 1.08 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(5) atom. The C(13)-O(1) bond length is 1.27 Å. The C(13)-O(5) bond length is 1.26 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(6) atom. The C(14)-O(2) bond length is 1.27 Å. The C(14)-O(6) bond length is 1.26 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(7) atom. The C(15)-O(3) bond length is 1.29 Å. The C(15)-O(7) bond length is 1.26 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one O(4) and one O(8) atom. The C(16)-O(4) bond length is 1.28 Å. The C(16)-O(8) bond length is 1.26 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Co(1), one C(5), and one C(9) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Co(1), one C(10), and one C(6) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(2), one C(11), and one C(7) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Co(2), one C(12), and one C(8) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one C(1), one C(9), and one H(9) atom. The N(5)-H(9) bond length is 1.04 Å. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one C(10), one C(2), and one H(10) atom. The N(6)-H(10) bond length is 1.04 Å. In the seventh N site, N(7) is bonded in a trigonal planar geometry to one C(11), one C(3), and one H(11) atom. The N(7)-H(11) bond length is 1.04 Å. In the eighth N site, N(8) is bonded in a trigonal planar geometry to one C(12), one C(4), and one H(12) atom. The N(8)-H(12) bond length is 1.04 Å. There are sixteen 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. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(8) atom. In the ninth H site, H(9) is bonded in a distorted linear geometry to one N(5) and one O(1) atom. The H(9)-O(1) bond length is 1.67 Å. In the tenth H site, H(10) is bonded in a distorted linear geometry to one N(6) and one O(2) atom. The H(10)-O(2) bond length is 1.66 Å. In the eleventh H site, H(11) is bonded in a single-bond geometry to one N(7) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one N(8) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(9) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(10) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(11) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(12) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(1), one C(13), and one H(9) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Co(1), one C(14), and one H(10) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(15) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(16) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Co(2) and one C(13) atom. In the sixth O site, O(6) is bonded in a distorted water-like geometry to one Co(2) and one C(14) atom. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one Co(1) and one C(15) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Co(1) and one C(16) atom. Linkers: 2 [O]C(=O)C([O])=O. Metal clusters: 2 [Co]. The MOF has largest included sphere 2.62 A, density 1.58 g/cm3, surface area 4213.75 m2/g, accessible volume 0.23 cm3/g