(C)2Cu3C34H14Br6(NO7)2 crystallizes in the monoclinic C2/c space group. The structure consists of eight acetylene molecules inside a Cu3C34H14Br6(NO7)2 framework. In the Cu3C34H14Br6(NO7)2 framework, there are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(14), one O(2), one O(7), and one O(8) atom. The Cu(1)-O(1) bond length is 1.96 Å. The Cu(1)-O(13) bond length is 2.08 Å. The Cu(1)-O(14) bond length is 2.19 Å. The Cu(1)-O(2) bond length is 1.97 Å. The Cu(1)-O(7) bond length is 1.93 Å. The Cu(1)-O(8) bond length is 1.96 Å. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(10), one O(3), one O(5), and one O(9) atom. The Cu(2)-O(10) bond length is 1.97 Å. The Cu(2)-O(3) bond length is 1.98 Å. The Cu(2)-O(5) bond length is 1.97 Å. The Cu(2)-O(9) bond length is 1.95 Å. In the third Cu site, Cu(3) is bonded in a distorted rectangular see-saw-like geometry to one O(11), one O(12), one O(4), and one O(6) atom. The Cu(3)-O(11) bond length is 1.95 Å. The Cu(3)-O(12) bond length is 1.91 Å. The Cu(3)-O(4) bond length is 1.93 Å. The Cu(3)-O(6) bond length is 1.96 Å. There are thirty-four inequivalent C sites. In the first C site, C(19) is bonded in a trigonal planar geometry to one C(20), one C(24), and one C(25) atom. The C(19)-C(20) bond length is 1.43 Å. The C(19)-C(24) bond length is 1.38 Å. The C(19)-C(25) bond length is 1.39 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.47 Å. The C(1)-C(6) bond length is 1.24 Å. The C(1)-C(7) bond length is 1.53 Å. In the third C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(1) atom. The C(2)-C(3) bond length is 1.33 Å. The C(2)-H(1) bond length is 0.95 Å. In the fourth C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.32 Å. The C(3)-C(8) bond length is 1.48 Å. In the fifth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one Br(1) atom. The C(4)-C(5) bond length is 1.51 Å. The C(4)-Br(1) bond length is 1.89 Å. In the sixth C site, C(5) is bonded in a water-like geometry to one C(4), one C(6), one H(2), and one H(3) atom. The C(5)-C(6) bond length is 1.45 Å. The C(5)-H(2) bond length is 0.99 Å. The C(5)-H(3) bond length is 0.99 Å. In the seventh C site, C(6) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one Br(2) atom. The C(6)-Br(2) bond length is 1.90 Å. In the eighth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.24 Å. The C(7)-O(2) bond length is 1.22 Å. In the ninth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(5) atom. The C(8)-O(3) bond length is 1.22 Å. The C(8)-O(5) bond length is 1.24 Å. In the tenth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(16), and one C(17) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-C(16) bond length is 1.39 Å. The C(9)-C(17) bond length is 1.51 Å. In the eleventh C site, C(10) is bonded in a distorted single-bond geometry to one C(11), one C(9), and one H(4) atom. The C(10)-C(11) bond length is 1.40 Å. The C(10)-H(4) bond length is 0.95 Å. In the twelfth C site, C(11) is bonded in a 4-coordinate geometry to one C(10), one C(12), one C(13), and one C(18) atom. The C(11)-C(12) bond length is 1.56 Å. The C(11)-C(13) bond length is 1.38 Å. The C(11)-C(18) bond length is 1.41 Å. In the thirteenth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), one Br(3), and one Br(4) atom. The C(12)-C(13) bond length is 0.82 Å. The C(12)-Br(3) bond length is 1.87 Å. The C(12)-Br(4) bond length is 1.95 Å. In the fourteenth C site, C(13) is bonded in a single-bond geometry to one C(11), one C(12), and one Br(4) atom. The C(13)-Br(4) bond length is 1.87 Å. In the fifteenth C site, C(20) is bonded in a distorted single-bond geometry to one C(19), one C(21), and one H(6) atom. The C(20)-C(21) bond length is 1.36 Å. The C(20)-H(6) bond length is 0.95 Å. In the sixteenth C site, C(21) is bonded in a trigonal planar geometry to one C(20), one C(22), and one C(26) atom. The C(21)-C(22) bond length is 1.38 Å. The C(21)-C(26) bond length is 1.45 Å. In the seventeenth C site, C(16) is bonded in a distorted single-bond geometry to one C(9) and one H(5) atom. The C(16)-H(5) bond length is 1.00 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(7), and one O(8) atom. The C(18)-O(7) bond length is 1.27 Å. The C(18)-O(8) bond length is 1.26 Å. In the nineteenth C site, C(22) is bonded in a trigonal planar geometry to one C(21), one C(23), and one Br(5) atom. The C(22)-C(23) bond length is 1.42 Å. The C(22)-Br(5) bond length is 1.87 Å. In the twentieth C site, C(23) is bonded in a distorted single-bond geometry to one C(22), one C(24), and one H(7) atom. The C(23)-C(24) bond length is 1.33 Å. The C(23)-H(7) bond length is 0.95 Å. In the twenty-first C site, C(24) is bonded in a distorted trigonal planar geometry to one C(19), one C(23), and one Br(6) atom. The C(24)-Br(6) bond length is 1.87 Å. In the twenty-second C site, C(25) is bonded in a distorted bent 120 degrees geometry to one C(19), one O(10), and one O(9) atom. The C(25)-O(10) bond length is 1.25 Å. The C(25)-O(9) bond length is 1.29 Å. In the twenty-third C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(21), one O(11), and one O(12) atom. The C(26)-O(11) bond length is 1.27 Å. The C(26)-O(12) bond length is 1.26 Å. In the twenty-fourth C site, C(27) is bonded in a distorted trigonal planar geometry to one N(1), one H(8), and one O(13) atom. The C(27)-N(1) bond length is 1.43 Å. The C(27)-H(8) bond length is 0.95 Å. The C(27)-O(13) bond length is 1.25 Å. In the twenty-fifth C site, C(28) is bonded to one N(1); one H(10); and two equivalent H(9,11) atoms to form corner-sharing CH3N tetrahedra. The C(28)-N(1) bond length is 1.45 Å. The C(28)-H(10) bond length is 0.99 Å. Both C(28)-H(9,11) bond lengths are 0.98 Å. In the twenty-sixth C site, C(29) is bonded to one N(1), one H(12), one H(13), and one H(14) atom to form corner-sharing CH3N tetrahedra. The C(29)-N(1) bond length is 1.43 Å. The C(29)-H(12) bond length is 0.99 Å. The C(29)-H(13) bond length is 0.98 Å. The C(29)-H(14) bond length is 0.98 Å. In the twenty-seventh C site, C(30) is bonded in a bent 120 degrees geometry to one N(2) and one O(14) atom. The C(30)-N(2) bond length is 1.44 Å. The C(30)-O(14) bond length is 1.23 Å. In the twenty-eighth C site, C(31) is bonded in a single-bond geometry to one N(2) atom. The C(31)-N(2) bond length is 1.46 Å. In the twenty-ninth C site, C(32) is bonded in a 2-coordinate geometry to one C(33) and one N(2) atom. The C(32)-C(33) bond length is 0.87 Å. The C(32)-N(2) bond length is 1.45 Å. In the thirtieth C site, C(33) is bonded in a distorted L-shaped geometry to one C(32) and one N(2) atom. The C(33)-N(2) bond length is 1.12 Å. In the thirty-first C site, C(34) is bonded in a distorted single-bond geometry to two equivalent C(36) atoms. There is one shorter (1.66 Å) and one longer (2.05 Å) C(34)-C(36) bond length. In the thirty-second C site, C(35) is bonded in a distorted single-bond geometry to one C(36) and one Br(6) atom. The C(35)-C(36) bond length is 1.63 Å. The C(35)-Br(6) bond length is 1.81 Å. In the thirty-third C site, C(36) is bonded in a 4-coordinate geometry to one C(35), one C(36), and two equivalent C(34) atoms. The C(36)-C(36) bond length is 1.78 Å. In the thirty-fourth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(4), and one O(6) atom. The C(17)-O(4) bond length is 1.26 Å. The C(17)-O(6) bond length is 1.22 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one C(27), one C(28), and one C(29) atom. In the second N site, N(2) is bonded in a 4-coordinate geometry to one C(30), one C(31), one C(32), and one C(33) atom. There are thirteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(16) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(20) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(23) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(27) atom. In the ninth H site, H(9,11) is bonded in a single-bond geometry to one C(28) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(28) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(29) atom. In the twelfth H site, H(13) is bonded in a single-bond geometry to one C(29) and one Br(6) atom. The H(13)-Br(6) bond length is 2.10 Å. In the thirteenth H site, H(14) is bonded in a single-bond geometry to one C(29) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(7) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(7) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(8) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(17) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(8) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(17) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(18) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(18) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(25) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(25) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Cu(3) and one C(26) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(26) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Cu(1), one C(27), and one O(14) atom. The O(13)-O(14) bond length is 1.19 Å. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Cu(1), one C(30), and one O(13) atom. There are six inequivalent Br sites. In the first Br site, Br(5) is bonded in a single-bond geometry to one C(22) atom. In the second Br site, Br(6) is bonded in a distorted trigonal non-coplanar geometry to one C(24), one C(35), and one H(13) atom. In the third Br site, Br(1) is bonded in a single-bond geometry to one C(4) atom. In the fourth Br site, Br(2) is bonded in a single-bond geometry to one C(6) atom. In the fifth Br site, Br(3) is bonded in a 2-coordinate geometry to one C(12) and one Br(4) atom. The Br(3)-Br(4) bond length is 1.35 Å. In the sixth Br site, Br(4) is bonded in a 3-coordinate geometry to one C(12), one C(13), and one Br(3) atom. Linkers: 5 [C][C]([C]Br)[C]([C])[C]Br.[O]C(=O)c1[c]cc(Br)c(C([O])=O)c1.[O]C(=O)c1[c]cc(Br)c(C([O])=O)c1 ,8 BrBr.[O]C(=O)[C]1[CH]C(C([O])=O)=C[C]2[C][C][C]21 ,8 [O]C(=O)C1=C(Br)CC(Br)=C(C([O])=O)[CH]1. Metal clusters: 8 [Cu] ,8 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. The MOF has largest included sphere 5.73 A, density 1.69 g/cm3, surface area 3038.55 m2/g, accessible volume 0.26 cm3/g