CuC8N2H10Br crystallizes in the monoclinic C2 space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one N(1), one N(3), one Br(1), and one Br(2) atom to form distorted corner-sharing CuBr2N2 tetrahedra. The Cu(1)-N(1) bond length is 1.99 Å. The Cu(1)-N(3) bond length is 2.00 Å. The Cu(1)-Br(1) bond length is 2.47 Å. The Cu(1)-Br(2) bond length is 2.46 Å. In the second Cu site, Cu(2) is bonded to one N(2), one N(4), one Br(2), and one Br(3) atom to form distorted corner-sharing CuBr2N2 tetrahedra. The Cu(2)-N(2) bond length is 2.00 Å. The Cu(2)-N(4) bond length is 2.00 Å. The Cu(2)-Br(2) bond length is 2.48 Å. The Cu(2)-Br(3) bond length is 2.49 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one N(1) atom. The C(1)-C(2) bond length is 1.42 Å. The C(1)-C(6) bond length is 1.49 Å. The C(1)-N(1) bond length is 1.34 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(3) atom. The C(2)-C(2) bond length is 1.40 Å. The C(2)-C(3) bond length is 1.42 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one N(2) atom. The C(3)-C(4) bond length is 1.49 Å. The C(3)-N(2) bond length is 1.34 Å. In the fourth C site, C(4) is bonded in a distorted water-like geometry to one C(3), one C(5), one H(1), and one H(2) atom. The C(4)-C(5) bond length is 1.55 Å. The C(4)-H(1) bond length is 1.11 Å. The C(4)-H(2) bond length is 1.10 Å. In the fifth C site, C(5) is bonded in a tetrahedral geometry to one C(4), one C(6), one C(7), and one C(8) atom. The C(5)-C(6) bond length is 1.54 Å. The C(5)-C(7) bond length is 1.54 Å. The C(5)-C(8) bond length is 1.52 Å. In the sixth C site, C(6) is bonded in a distorted water-like geometry to one C(1), one C(5), one H(3), and one H(4) atom. The C(6)-H(3) bond length is 1.10 Å. The C(6)-H(4) bond length is 1.11 Å. In the seventh C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one C(5), one H(5), one H(6), and one H(7) atom. The C(7)-H(5) bond length is 1.10 Å. The C(7)-H(6) bond length is 1.10 Å. The C(7)-H(7) bond length is 1.10 Å. In the eighth C site, C(8) is bonded in a trigonal non-coplanar geometry to one C(5), one H(10), one H(8), and one H(9) atom. The C(8)-H(10) bond length is 1.10 Å. The C(8)-H(8) bond length is 1.10 Å. The C(8)-H(9) bond length is 1.10 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(10), one C(14), and one N(3) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-C(14) bond length is 1.49 Å. The C(9)-N(3) bond length is 1.34 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(9) atom. The C(10)-C(10) bond length is 1.40 Å. The C(10)-C(11) bond length is 1.42 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 N(4) atom. The C(11)-C(12) bond length is 1.49 Å. The C(11)-N(4) bond length is 1.34 Å. In the twelfth C site, C(12) is bonded in a distorted water-like geometry to one C(11), one C(13), one H(11), and one H(12) atom. The C(12)-C(13) bond length is 1.55 Å. The C(12)-H(11) bond length is 1.10 Å. The C(12)-H(12) bond length is 1.10 Å. In the thirteenth C site, C(13) is bonded in a tetrahedral geometry to one C(12), one C(14), one C(15), and one C(16) atom. The C(13)-C(14) bond length is 1.54 Å. The C(13)-C(15) bond length is 1.54 Å. The C(13)-C(16) bond length is 1.53 Å. In the fourteenth C site, C(14) is bonded in a distorted water-like geometry to one C(13), one C(9), one H(13), and one H(14) atom. The C(14)-H(13) bond length is 1.10 Å. The C(14)-H(14) bond length is 1.11 Å. In the fifteenth C site, C(15) is bonded in a distorted trigonal non-coplanar geometry to one C(13), one H(15), one H(16), and one H(17) atom. The C(15)-H(15) bond length is 1.10 Å. The C(15)-H(16) bond length is 1.10 Å. The C(15)-H(17) bond length is 1.10 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal non-coplanar geometry to one C(13), one H(18), one H(19), and one H(20) atom. The C(16)-H(18) bond length is 1.10 Å. The C(16)-H(19) bond length is 1.10 Å. The C(16)-H(20) bond length is 1.10 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(1), and one N(2) atom. The N(1)-N(2) bond length is 1.39 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(3), and one N(1) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(9), and one N(3) atom. The N(3)-N(3) bond length is 1.38 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(11), and one N(4) atom. The N(4)-N(4) bond length is 1.39 Å. There are twenty inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) 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(7) 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 single-bond geometry to one C(8) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(8) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(12) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(12) 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(15) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(15) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(15) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(16) atom. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one C(16) atom. In the twentieth H site, H(20) is bonded in a single-bond geometry to one C(16) atom. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in an L-shaped geometry to two equivalent Cu(1) atoms. In the second Br site, Br(2) is bonded in an L-shaped geometry to one Cu(1) and one Cu(2) atom. In the third Br site, Br(3) is bonded in an L-shaped geometry to two equivalent Cu(2) atoms. Linkers: 2 CC1(C)Cc2nnc3c4c(nnc(c24)C1)CC(C)(C)C3. Metal clusters: 4 [Cu]. The MOF has largest included sphere 4.87 A, density 1.80 g/cm3, surface area 3475.62 m2/g, accessible volume 0.17 cm3/g