Cu2C6N5H4Br crystallizes in the triclinic P1 space group. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one N(3), one N(8), and two equivalent Br(1) atoms. The Cu(1)-N(3) bond length is 1.93 Å. The Cu(1)-N(8) bond length is 1.97 Å. Both Cu(1)-Br(1) bond lengths are 2.56 Å. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one N(4), one N(7), and two equivalent Br(2) atoms. The Cu(2)-N(4) bond length is 1.93 Å. The Cu(2)-N(7) bond length is 1.97 Å. Both Cu(2)-Br(2) bond lengths are 2.56 Å. In the third Cu site, Cu(3) is bonded in a 3-coordinate geometry to one N(5), one N(9), and one Br(2) atom. The Cu(3)-N(5) bond length is 1.90 Å. The Cu(3)-N(9) bond length is 1.92 Å. The Cu(3)-Br(2) bond length is 2.62 Å. In the fourth Cu site, Cu(4) is bonded in a 3-coordinate geometry to one N(10), one N(6), and one Br(1) atom. The Cu(4)-N(10) bond length is 1.91 Å. The Cu(4)-N(6) bond length is 1.90 Å. The Cu(4)-Br(1) bond length is 2.63 Å. There are eleven inequivalent C sites. In the first C site, C(1) is bonded in a distorted water-like geometry to one C(3), one N(1), and one N(7) atom. The C(1)-C(3) bond length is 1.46 Å. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(7) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted water-like geometry to one C(4), one N(2), and one N(8) atom. The C(2)-C(4) bond length is 1.46 Å. The C(2)-N(2) bond length is 1.35 Å. The C(2)-N(8) bond length is 1.35 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(7) atom. The C(3)-C(5) bond length is 1.40 Å. The C(3)-C(7) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(8) atom. The C(4)-C(6) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.40 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(3); one C(9); and one H(1,2) atom. The C(5)-C(9) bond length is 1.38 Å. The C(5)-H(1,2) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(10); one C(4); and one H(1,2) atom. The C(6)-C(10) bond length is 1.38 Å. The C(6)-H(1,2) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(11,12); one C(3); and one H(3,4) atom. The C(7)-C(11,12) bond length is 1.39 Å. The C(7)-H(3,4) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(11,12); one C(4); and one H(3,4) atom. The C(8)-C(11,12) bond length is 1.39 Å. The C(8)-H(3,4) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(5), one N(9), and one H(5) atom. The C(9)-N(9) bond length is 1.36 Å. The C(9)-H(5) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(6), one N(10), and one H(6) atom. The C(10)-N(10) bond length is 1.36 Å. The C(10)-H(6) bond length is 1.09 Å. In the eleventh C site, C(11,12) is bonded in a distorted trigonal planar geometry to one C(7), one N(9), and one H(7) atom. The C(11,12)-N(9) bond length is 1.35 Å. The C(11,12)-H(7) bond length is 1.09 Å. There are ten inequivalent N sites. In the first N site, N(1) is bonded in a distorted water-like geometry to one C(1) and one N(3) atom. The N(1)-N(3) bond length is 1.33 Å. In the second N site, N(2) is bonded in a distorted water-like geometry to one C(2) and one N(4) atom. The N(2)-N(4) bond length is 1.33 Å. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one N(1), and one N(5) atom. The N(3)-N(5) bond length is 1.34 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Cu(2), one N(2), and one N(6) atom. The N(4)-N(6) bond length is 1.34 Å. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Cu(3), one N(3), and one N(7) atom. The N(5)-N(7) bond length is 1.35 Å. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one Cu(4), one N(4), and one N(8) atom. The N(6)-N(8) bond length is 1.35 Å. In the seventh N site, N(7) is bonded in a 3-coordinate geometry to one Cu(2), one C(1), and one N(5) atom. In the eighth N site, N(8) is bonded in a 3-coordinate geometry to one Cu(1), one C(2), and one N(6) atom. In the ninth N site, N(9) is bonded in a trigonal planar geometry to one Cu(3); one C(11,12); and one C(9) atom. In the tenth N site, N(10) is bonded in a trigonal planar geometry to one Cu(4); one C(10); and one C(11,12) atom. The N(10)-C(11,12) bond length is 1.35 Å. There are six inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(7) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(7) is bonded in a single-bond geometry to one C(11,12) atom. In the sixth H site, H(8) is bonded in a single-bond geometry to one C(11,12) atom. The H(8)-C(11,12) bond length is 1.09 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 3-coordinate geometry to one Cu(4) and two equivalent Cu(1) atoms. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one Cu(3) and two equivalent Cu(2) atoms. Linkers: 2 c1cc(C2=NN=N[N]2)ccn1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 1.91 A, density 2.84 g/cm3, surface area 2625.82 m2/g, accessible volume 0.03 cm3/g