Cu6C25H15(NO)10 crystallizes in the monoclinic Pc space group. There are six inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one N(4), one N(5), one O(10), and one O(8) atom. The Cu(1)-N(4) bond length is 1.95 Å. The Cu(1)-N(5) bond length is 1.92 Å. The Cu(1)-O(10) bond length is 1.94 Å. The Cu(1)-O(8) bond length is 1.97 Å. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one N(8), one N(9), one O(2), and one O(4) atom. The Cu(2)-N(8) bond length is 1.94 Å. The Cu(2)-N(9) bond length is 1.95 Å. The Cu(2)-O(2) bond length is 1.91 Å. The Cu(2)-O(4) bond length is 1.95 Å. In the third Cu site, Cu(3) is bonded in a T-shaped geometry to one N(1), one N(3), and one O(1) atom. The Cu(3)-N(1) bond length is 1.96 Å. The Cu(3)-N(3) bond length is 1.99 Å. The Cu(3)-O(1) bond length is 2.07 Å. In the fourth Cu site, Cu(4) is bonded in a trigonal pyramidal geometry to one N(10), one N(7), one O(6), and one O(9) atom. The Cu(4)-N(10) bond length is 1.90 Å. The Cu(4)-N(7) bond length is 1.87 Å. The Cu(4)-O(6) bond length is 2.17 Å. The Cu(4)-O(9) bond length is 2.26 Å. In the fifth Cu site, Cu(5) is bonded in a T-shaped geometry to one N(6), one O(5), and one O(7) atom. The Cu(5)-N(6) bond length is 2.01 Å. The Cu(5)-O(5) bond length is 1.96 Å. The Cu(5)-O(7) bond length is 1.89 Å. In the sixth Cu site, Cu(6) is bonded in a water-like geometry to one N(2) and one O(3) atom. The Cu(6)-N(2) bond length is 1.89 Å. The Cu(6)-O(3) bond length is 2.14 Å. There are twenty-five inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.33 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(11), one N(4), and one H(1) atom. The C(2)-C(11) bond length is 1.32 Å. The C(2)-N(4) bond length is 1.38 Å. The C(2)-H(1) bond length is 0.93 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one N(4) atom. The C(3)-N(4) bond length is 1.44 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(13), one N(5), and one H(2) atom. The C(4)-C(13) bond length is 1.34 Å. The C(4)-N(5) bond length is 1.33 Å. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a bent 120 degrees geometry to one C(6), one O(3), and one O(4) atom. The C(5)-C(6) bond length is 1.42 Å. The C(5)-O(3) bond length is 1.32 Å. The C(5)-O(4) bond length is 1.24 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one N(9) atom. The C(6)-C(7) bond length is 1.36 Å. The C(6)-N(9) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one N(3), and one H(3) atom. The C(7)-N(3) bond length is 1.33 Å. The C(7)-H(3) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(21), one N(2), and one H(4) atom. The C(8)-C(21) bond length is 1.42 Å. The C(8)-N(2) bond length is 1.39 Å. The C(8)-H(4) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(10), one N(3), and one H(5) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-N(3) bond length is 1.27 Å. The C(9)-H(5) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(9), one N(9), and one H(6) atom. The C(10)-N(9) bond length is 1.36 Å. The C(10)-H(6) bond length is 0.93 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(2), one N(10), and one H(7) atom. The C(11)-N(10) bond length is 1.38 Å. The C(11)-H(7) bond length is 0.92 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one N(10) and one H(8) atom. The C(12)-N(10) bond length is 1.35 Å. The C(12)-H(8) bond length is 0.93 Å. In the thirteenth C site, C(13) is bonded in a 2-coordinate geometry to one C(4), one N(7), and one H(9) atom. The C(13)-N(7) bond length is 1.37 Å. The C(13)-H(9) bond length is 0.93 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(24), one N(7), and one H(10) atom. The C(14)-C(24) bond length is 1.40 Å. The C(14)-N(7) bond length is 1.40 Å. The C(14)-H(10) bond length is 0.93 Å. In the fifteenth C site, C(15) is bonded in a bent 120 degrees geometry to one C(16), one O(5), and one O(6) atom. The C(15)-C(16) bond length is 1.47 Å. The C(15)-O(5) bond length is 1.29 Å. The C(15)-O(6) bond length is 1.23 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(15), one C(23), and one N(6) atom. The C(16)-C(23) bond length is 1.33 Å. The C(16)-N(6) bond length is 1.45 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(22) and one N(8) atom. The C(17)-C(22) bond length is 1.41 Å. The C(17)-N(8) bond length is 1.23 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(9) atom. The C(18)-O(10) bond length is 1.23 Å. The C(18)-O(9) bond length is 1.21 Å. In the nineteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(20), one N(8), and one H(11) atom. The C(19)-C(20) bond length is 1.38 Å. The C(19)-N(8) bond length is 1.26 Å. The C(19)-H(11) bond length is 0.93 Å. In the twentieth C site, C(20) is bonded in a distorted trigonal planar geometry to one C(19), one N(1), and one H(12) atom. The C(20)-N(1) bond length is 1.34 Å. The C(20)-H(12) bond length is 0.93 Å. In the twenty-first C site, C(21) is bonded in a distorted trigonal planar geometry to one C(8), one N(6), and one H(13) atom. The C(21)-N(6) bond length is 1.32 Å. The C(21)-H(13) bond length is 0.93 Å. In the twenty-second C site, C(22) is bonded in a distorted trigonal planar geometry to one C(17), one N(1), and one H(14) atom. The C(22)-N(1) bond length is 1.31 Å. The C(22)-H(14) bond length is 0.93 Å. In the twenty-third C site, C(23) is bonded in a 3-coordinate geometry to one C(16), one N(2), and one H(15) atom. The C(23)-N(2) bond length is 1.34 Å. The C(23)-H(15) bond length is 0.93 Å. In the twenty-fourth C site, C(24) is bonded in a distorted single-bond geometry to one C(14), one C(25), and one N(5) atom. The C(24)-C(25) bond length is 1.59 Å. The C(24)-N(5) bond length is 1.26 Å. In the twenty-fifth C site, C(25) is bonded in a distorted bent 120 degrees geometry to one C(24), one O(7), and one O(8) atom. The C(25)-O(7) bond length is 1.15 Å. The C(25)-O(8) bond length is 1.29 Å. There are ten inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cu(3), one C(20), and one C(22) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(6), one C(23), and one C(8) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cu(3), one C(7), and one C(9) atom. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(2), and one C(3) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Cu(1), one C(24), and one C(4) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one Cu(5), one C(16), and one C(21) atom. In the seventh N site, N(7) is bonded in a trigonal planar geometry to one Cu(4), one C(13), and one C(14) atom. In the eighth N site, N(8) is bonded in a trigonal planar geometry to one Cu(2), one C(17), and one C(19) atom. In the ninth N site, N(9) is bonded in a trigonal planar geometry to one Cu(2), one C(10), and one C(6) atom. In the tenth N site, N(10) is bonded in a trigonal planar geometry to one Cu(4), one C(11), and one C(12) atom. There are fifteen 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(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(10) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(12) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(13) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(14) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(19) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(20) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(21) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(22) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(23) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Cu(3) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Cu(6) and one C(5) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cu(2) and one C(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(5) and one C(15) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(4) and one C(15) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Cu(5) and one C(25) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(25) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Cu(4) and one C(18) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(18) atom. Linkers: 10 [O]C(=O)c1cnccn1. Metal clusters: 12 [Cu]. The MOF has largest included sphere 9.38 A, density 1.04 g/cm3, surface area 3564.56 m2/g, accessible volume 0.60 cm3/g