Cu2C18N4H12O3 is Indium-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one Cu2C18N4H12O3 cluster. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a T-shaped geometry to one N(1), one N(2), and one O(1) atom. The Cu(1)-N(1) bond length is 2.01 Å. The Cu(1)-N(2) bond length is 2.00 Å. The Cu(1)-O(1) bond length is 1.92 Å. In the second Cu site, Cu(2) is bonded in a water-like geometry to two equivalent O(1) atoms. There is one shorter (1.77 Å) and one longer (1.91 Å) Cu(2)-O(1) bond length. There are eighteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(10) and one H(1) atom. The C(1)-C(10) bond length is 1.39 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a single-bond geometry to one C(8) and one H(2) atom. The C(2)-C(8) bond length is 1.37 Å. The C(2)-H(2) bond length is 0.93 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(5) and one H(3) atom. The C(3)-C(5) bond length is 1.39 Å. The C(3)-H(3) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(10) and one H(4) atom. The C(4)-C(10) bond length is 1.39 Å. The C(4)-H(4) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(3), one C(9), and one N(4) atom. The C(5)-C(9) bond length is 1.39 Å. The C(5)-N(4) bond length is 1.42 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(12), one N(3), and one O(3) atom. The C(6)-C(12) bond length is 1.46 Å. The C(6)-N(3) bond length is 1.37 Å. The C(6)-O(3) bond length is 1.24 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(15) and one H(5) atom. The C(7)-C(15) bond length is 1.38 Å. The C(7)-H(5) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(2), one N(2), and one H(6) atom. The C(8)-N(2) bond length is 1.34 Å. The C(8)-H(6) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(5) and one H(7) atom. The C(9)-H(7) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(1), one C(4), and one N(3) atom. The C(10)-N(3) bond length is 1.41 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(15), one N(4), and one O(2) atom. The C(11)-C(15) bond length is 1.49 Å. The C(11)-N(4) bond length is 1.34 Å. The C(11)-O(2) bond length is 1.22 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(14), one C(16), and one C(6) atom. The C(12)-C(14) bond length is 1.39 Å. The C(12)-C(16) bond length is 1.39 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(17), one N(1), and one H(8) atom. The C(13)-C(17) bond length is 1.35 Å. The C(13)-N(1) bond length is 1.32 Å. The C(13)-H(8) bond length is 0.93 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(12) and one H(9) atom. The C(14)-H(9) bond length is 0.93 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(11), one C(18), and one C(7) atom. The C(15)-C(18) bond length is 1.37 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(12), one N(1), and one H(10) atom. The C(16)-N(1) bond length is 1.35 Å. The C(16)-H(10) bond length is 0.93 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(13) and one H(11) atom. The C(17)-H(11) bond length is 0.93 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(15), one N(2), and one H(12) atom. The C(18)-N(2) bond length is 1.34 Å. The C(18)-H(12) 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 Cu(1), one C(13), and one C(16) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(18), and one C(8) atom. In the third N site, N(3) is bonded in a bent 120 degrees geometry to one C(10) and one C(6) atom. In the fourth N site, N(4) is bonded in a bent 120 degrees geometry to one C(11) and one C(5) atom. There are twelve 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(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(13) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(14) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(16) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(17) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(18) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cu(1) and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded in a single-bond geometry to one C(11) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(6) atom. Linkers: 3 O=C([N]c1ccc([N]C(=O)c2cccnc2)cc1)c1cccnc1. Metal clusters: 1 O1[Cu]2O[Cu]12.[Cu].[Cu]. The MOF has largest included sphere 6.24 A, density 0.95 g/cm3, surface area 4210.23 m2/g, accessible volume 0.63 cm3/g