Cu3C8H13(N3O)2 crystallizes in the trigonal R3m space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a rectangular see-saw-like geometry to one N(2), one N(3), one O(1), and one O(2) atom. The Cu(1)-N(2) bond length is 1.98 Å. The Cu(1)-N(3) bond length is 1.97 Å. The Cu(1)-O(1) bond length is 1.97 Å. The Cu(1)-O(2) bond length is 1.92 Å. In the second Cu site, Cu(2) is bonded in a T-shaped geometry to two equivalent N(1) and one O(1) atom. Both Cu(2)-N(1) bond lengths are 1.99 Å. The Cu(2)-O(1) bond length is 1.95 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal non-coplanar geometry to one C(2) and three equivalent H(1,2,3) atoms. The C(1)-C(2) bond length is 1.49 Å. All C(1)-H(1,2,3) bond lengths are 0.98 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one N(1), and one N(3) atom. The C(2)-N(1) bond length is 1.29 Å. The C(2)-N(3) bond length is 1.36 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one N(2), and one N(3) atom. The C(3)-C(4) bond length is 1.50 Å. The C(3)-N(2) bond length is 1.33 Å. The C(3)-N(3) bond length is 1.36 Å. In the fourth C site, C(4) is bonded in a trigonal non-coplanar geometry to one C(3); one H(5); and two equivalent H(4,6) atoms. The C(4)-H(5) bond length is 0.98 Å. Both C(4)-H(4,6) bond lengths are 0.98 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.37 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(3), and one N(1) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cu(1), one C(2), and one C(3) atom. There are four inequivalent H sites. In the first H site, H(1,2,3) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(7) is bonded in a single-bond geometry to one O(1) atom. The H(7)-O(1) bond length is 0.85 Å. In the third H site, H(4,6) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(4) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cu(2), two equivalent Cu(1), and one H(7) atom. In the second O site, O(2) is bonded in a water-like geometry to two equivalent Cu(1) atoms. Linkers: 5 CC1=NN=C(C)[N]1 ,1 CC1=[N]=C(N=N1)C. Metal clusters: 3 O[Cu]1N=N[Cu]O[Cu]N=N1. The MOF has largest included sphere 9.80 A, density 1.04 g/cm3, surface area 3489.15 m2/g, accessible volume 0.61 cm3/g