Cu5C28H20(N2O)4 crystallizes in the monoclinic P2_1/c space group. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted linear geometry to one N(2) and one O(3) atom. The Cu(1)-N(2) bond length is 1.93 Å. The Cu(1)-O(3) bond length is 1.87 Å. In the second Cu site, Cu(2) is bonded in a linear geometry to one N(8) and one O(1) atom. The Cu(2)-N(8) bond length is 1.85 Å. The Cu(2)-O(1) bond length is 1.85 Å. In the third Cu site, Cu(3) is bonded in a distorted linear geometry to one N(4) and one O(4) atom. The Cu(3)-N(4) bond length is 1.93 Å. The Cu(3)-O(4) bond length is 1.85 Å. In the fourth Cu site, Cu(4) is bonded in a linear geometry to one N(6) and one O(2) atom. The Cu(4)-N(6) bond length is 1.81 Å. The Cu(4)-O(2) bond length is 1.79 Å. In the fifth Cu site, Cu(5) is bonded in a tetrahedral geometry to one N(1), one N(3), one N(5), and one N(7) atom. The Cu(5)-N(1) bond length is 1.83 Å. The Cu(5)-N(3) bond length is 2.07 Å. The Cu(5)-N(5) bond length is 1.92 Å. The Cu(5)-N(7) bond length is 2.04 Å. There are twenty-eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(2), and one O(1) atom. The C(1)-C(2) bond length is 1.42 Å. The C(1)-N(2) bond length is 1.29 Å. The C(1)-O(1) bond length is 1.32 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(6) atom. The C(2)-C(3) bond length is 1.33 Å. The C(2)-C(6) bond length is 1.57 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 0.95 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(4) atom. The C(4)-C(5) bond length is 1.35 Å. The C(4)-H(4) bond length is 0.94 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(7), and one N(2) atom. The C(5)-C(7) bond length is 1.54 Å. The C(5)-N(2) bond length is 1.27 Å. In the sixth C site, C(6) is bonded in a distorted linear geometry to one C(2) and one N(1) atom. The C(6)-N(1) bond length is 1.21 Å. In the seventh C site, C(7) is bonded in a trigonal non-coplanar geometry to one C(5), one H(10), one H(11), and one H(9) atom. The C(7)-H(10) bond length is 0.94 Å. The C(7)-H(11) bond length is 0.95 Å. The C(7)-H(9) bond length is 0.94 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(9), one N(4), and one O(2) atom. The C(8)-C(9) bond length is 1.41 Å. The C(8)-N(4) bond length is 1.33 Å. The C(8)-O(2) bond length is 1.27 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(10), one C(13), and one C(8) atom. The C(9)-C(10) bond length is 1.44 Å. The C(9)-C(13) bond length is 1.40 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(11), one C(9), and one H(1) atom. The C(10)-C(11) bond length is 1.29 Å. The C(10)-H(1) bond length is 0.95 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(12), and one H(2) atom. The C(11)-C(12) bond length is 1.30 Å. The C(11)-H(2) bond length is 0.96 Å. In the twelfth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(11), one C(14), and one N(4) atom. The C(12)-C(14) bond length is 1.55 Å. The C(12)-N(4) bond length is 1.36 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(9) and one N(3) atom. The C(13)-N(3) bond length is 1.08 Å. In the fourteenth C site, C(14) is bonded in a trigonal non-coplanar geometry to one C(12), one H(12), one H(13), and one H(14) atom. The C(14)-H(12) bond length is 0.96 Å. The C(14)-H(13) bond length is 0.94 Å. The C(14)-H(14) bond length is 0.95 Å. In the fifteenth C site, C(15) is bonded in a 2-coordinate geometry to one C(16), one N(6), and one O(3) atom. The C(15)-C(16) bond length is 1.51 Å. The C(15)-N(6) bond length is 1.32 Å. The C(15)-O(3) bond length is 1.28 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(15), one C(17), and one C(20) atom. The C(16)-C(17) bond length is 1.50 Å. The C(16)-C(20) bond length is 1.38 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(16) and one H(5) atom. The C(17)-H(5) bond length is 0.95 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(19) and one H(6) atom. The C(18)-C(19) bond length is 1.39 Å. The C(18)-H(6) bond length is 0.94 Å. In the nineteenth C site, C(19) is bonded in a distorted trigonal planar geometry to one C(18), one C(21), and one N(6) atom. The C(19)-C(21) bond length is 1.45 Å. The C(19)-N(6) bond length is 1.32 Å. In the twentieth C site, C(20) is bonded in a linear geometry to one C(16) and one N(5) atom. The C(20)-N(5) bond length is 1.15 Å. In the twenty-first C site, C(21) is bonded in a trigonal non-coplanar geometry to one C(19), one H(15), one H(16), and one H(17) atom. The C(21)-H(15) bond length is 0.93 Å. The C(21)-H(16) bond length is 0.95 Å. The C(21)-H(17) bond length is 0.95 Å. In the twenty-second C site, C(22) is bonded in a 3-coordinate geometry to one C(23), one N(8), and one O(4) atom. The C(22)-C(23) bond length is 1.37 Å. The C(22)-N(8) bond length is 1.29 Å. The C(22)-O(4) bond length is 1.30 Å. In the twenty-third C site, C(23) is bonded in a trigonal planar geometry to one C(22), one C(24), and one C(27) atom. The C(23)-C(24) bond length is 1.38 Å. The C(23)-C(27) bond length is 1.44 Å. In the twenty-fourth C site, C(24) is bonded in a distorted single-bond geometry to one C(23) and one H(7) atom. The C(24)-H(7) bond length is 0.95 Å. In the twenty-fifth C site, C(25) is bonded in a distorted single-bond geometry to one C(26) and one H(8) atom. The C(25)-C(26) bond length is 1.46 Å. The C(25)-H(8) bond length is 0.95 Å. In the twenty-sixth C site, C(26) is bonded in a distorted trigonal planar geometry to one C(25), one C(28), and one N(8) atom. The C(26)-C(28) bond length is 1.50 Å. The C(26)-N(8) bond length is 1.28 Å. In the twenty-seventh C site, C(27) is bonded in a distorted linear geometry to one C(23) and one N(7) atom. The C(27)-N(7) bond length is 1.12 Å. In the twenty-eighth C site, C(28) is bonded in a trigonal non-coplanar geometry to one C(26), one H(18), one H(19), and one H(20) atom. The C(28)-H(18) bond length is 0.95 Å. The C(28)-H(19) bond length is 0.95 Å. The C(28)-H(20) bond length is 0.94 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Cu(5) and one C(6) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(5) atom. In the third N site, N(3) is bonded in a linear geometry to one Cu(5) and one C(13) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Cu(3), one C(12), and one C(8) atom. In the fifth N site, N(5) is bonded in a linear geometry to one Cu(5) and one C(20) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one Cu(4), one C(15), and one C(19) atom. In the seventh N site, N(7) is bonded in a linear geometry to one Cu(5) and one C(27) atom. In the eighth N site, N(8) is bonded in a trigonal planar geometry to one Cu(2), one C(22), and one C(26) atom. There are twenty inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(10) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(11) 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(17) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(18) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(24) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(25) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(7) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(7) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(7) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(14) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(14) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(14) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(21) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(21) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(21) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(28) atom. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one C(28) atom. In the twentieth H site, H(20) is bonded in a single-bond geometry to one C(28) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(4) and one C(8) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(15) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(22) atom. Linkers: 12 CC1=NC(=O)C(C#N)=C[CH]1 ,4 CC1=NC(=O)[C](C#N)C=C1. Metal clusters: 20 [Cu]. The MOF has largest included sphere 6.35 A, density 1.06 g/cm3, surface area 4088.19 m2/g, accessible volume 0.60 cm3/g