Cu3C18N6H26O13 crystallizes in the triclinic P-1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one N(1), one N(3), one O(1), and one O(8) atom. The Cu(1)-N(1) bond length is 1.96 Å. The Cu(1)-N(3) bond length is 1.99 Å. The Cu(1)-O(1) bond length is 2.04 Å. The Cu(1)-O(8) bond length is 2.04 Å. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one N(2), one N(4), one O(2), and one O(7) atom. The Cu(2)-N(2) bond length is 1.96 Å. The Cu(2)-N(4) bond length is 1.99 Å. The Cu(2)-O(2) bond length is 2.04 Å. The Cu(2)-O(7) bond length is 2.04 Å. In the third Cu site, Cu(3) is bonded in a square pyramidal geometry to two equivalent N(5,6); one O(11); one O(12); and one O(13) atom. Both Cu(3)-N(5,6) bond lengths are 2.02 Å. The Cu(3)-O(11) bond length is 2.02 Å. The Cu(3)-O(12) bond length is 2.02 Å. The Cu(3)-O(13) bond length is 2.24 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(11,12); one C(13,14); and one C(3,4) atom. The C(1)-C(11,12) bond length is 1.40 Å. The C(1)-C(13,14) bond length is 1.50 Å. The C(1)-C(3,4) bond length is 1.40 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(11,12); one C(13,14); and one C(3,4) atom. The C(2)-C(11,12) bond length is 1.40 Å. The C(2)-C(13,14) bond length is 1.50 Å. The C(2)-C(3,4) bond length is 1.40 Å. In the third C site, C(3,4) is bonded in a distorted single-bond geometry to one C(1); one C(5); and one H(21,22) atom. The C(3,4)-C(5) bond length is 1.40 Å. The C(3,4)-H(21,22) bond length is 1.08 Å. In the fourth C site, C(5) is bonded in a trigonal planar geometry to one C(15); one C(3,4); and one C(7,8) atom. The C(5)-C(15) bond length is 1.49 Å. The C(5)-C(7,8) bond length is 1.40 Å. In the fifth C site, C(6) is bonded in a trigonal planar geometry to one C(16); one C(3,4); and one C(7,8) atom. The C(6)-C(16) bond length is 1.49 Å. The C(6)-C(3,4) bond length is 1.40 Å. The C(6)-C(7,8) bond length is 1.40 Å. In the sixth C site, C(7,8) is bonded in a distorted single-bond geometry to one C(5); one C(9,10); and one H(23,24) atom. The C(7,8)-C(9,10) bond length is 1.39 Å. The C(7,8)-H(23,24) bond length is 1.09 Å. In the seventh C site, C(9,10) is bonded in a trigonal planar geometry to one C(11,12); one C(17,18); and one C(7,8) atom. The C(9,10)-C(11,12) bond length is 1.40 Å. The C(9,10)-C(17,18) bond length is 1.50 Å. In the eighth C site, C(11,12) is bonded in a distorted single-bond geometry to one C(1); one C(9,10); and one H(25,26) atom. The C(11,12)-H(25,26) bond length is 1.08 Å. In the ninth C site, C(13,14) is bonded in a bent 120 degrees geometry to one C(1), one O(1), and one O(3) atom. The C(13,14)-O(1) bond length is 1.29 Å. The C(13,14)-O(3) bond length is 1.26 Å. In the tenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(5), and one O(7) atom. The C(15)-O(5) bond length is 1.27 Å. The C(15)-O(7) bond length is 1.29 Å. In the eleventh C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(6), and one O(8) atom. The C(16)-O(6) bond length is 1.27 Å. The C(16)-O(8) bond length is 1.29 Å. In the twelfth C site, C(17,18) is bonded in a distorted bent 120 degrees geometry to one C(9,10); one O(11); and one O(9,10) atom. The C(17,18)-O(11) bond length is 1.31 Å. The C(17,18)-O(9,10) bond length is 1.25 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(1), one H(3), and one H(5) atom. The N(1)-H(1) bond length is 1.03 Å. The N(1)-H(3) bond length is 1.03 Å. The N(1)-H(5) bond length is 1.03 Å. In the second N site, N(2) is bonded in a distorted trigonal non-coplanar geometry to one Cu(2), one H(2), one H(4), and one H(6) atom. The N(2)-H(2) bond length is 1.03 Å. The N(2)-H(4) bond length is 1.03 Å. The N(2)-H(6) bond length is 1.03 Å. In the third N site, N(3) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1); one H(11,12); one H(7,8); and one H(9,10) atom. The N(3)-H(11,12) bond length is 1.02 Å. The N(3)-H(7,8) bond length is 1.03 Å. The N(3)-H(9,10) bond length is 1.03 Å. In the fourth N site, N(4) is bonded in a distorted trigonal non-coplanar geometry to one Cu(2); one H(11,12); one H(7,8); and one H(9,10) atom. The N(4)-H(11,12) bond length is 1.02 Å. The N(4)-H(7,8) bond length is 1.03 Å. The N(4)-H(9,10) bond length is 1.03 Å. In the fifth N site, N(5,6) is bonded in a distorted trigonal non-coplanar geometry to one Cu(3); one H(13,14); one H(15,16); and one H(17,18) atom. The N(5,6)-H(13,14) bond length is 1.03 Å. The N(5,6)-H(15,16) bond length is 1.02 Å. The N(5,6)-H(17,18) bond length is 1.02 Å. There are seventeen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(1) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(2) atom. In the seventh H site, H(7,8) is bonded in a single-bond geometry to one N(3) atom. In the eighth H site, H(9,10) is bonded in a single-bond geometry to one N(3) atom. In the ninth H site, H(11,12) is bonded in a single-bond geometry to one N(3) atom. In the tenth H site, H(13,14) is bonded in a single-bond geometry to one N(5,6) atom. In the eleventh H site, H(15,16) is bonded in a single-bond geometry to one N(5,6) atom. In the twelfth H site, H(17,18) is bonded in a single-bond geometry to one N(5,6) atom. In the thirteenth H site, H(19) is bonded in a distorted single-bond geometry to one O(13) and one O(5) atom. The H(19)-O(13) bond length is 0.99 Å. The H(19)-O(5) bond length is 1.65 Å. In the fourteenth H site, H(20) is bonded in a distorted single-bond geometry to one O(13) and one O(6) atom. The H(20)-O(13) bond length is 0.99 Å. The H(20)-O(6) bond length is 1.65 Å. In the fifteenth H site, H(21,22) is bonded in a single-bond geometry to one C(3,4) atom. In the sixteenth H site, H(23,24) is bonded in a single-bond geometry to one C(7,8) atom. In the seventeenth H site, H(25,26) is bonded in a single-bond geometry to one C(11,12) atom. There are twelve inequivalent O sites. In the first O site, O(13) is bonded in a distorted water-like geometry to one Cu(3), one H(19), and one H(20) atom. In the second O site, O(1) is bonded in a water-like geometry to one Cu(1) and one C(13,14) atom. In the third O site, O(2) is bonded in a water-like geometry to one Cu(2) and one C(13,14) atom. The O(2)-C(13,14) bond length is 1.29 Å. In the fourth O site, O(3) is bonded in a single-bond geometry to one C(13,14) atom. In the fifth O site, O(4) is bonded in a single-bond geometry to one C(13,14) atom. The O(4)-C(13,14) bond length is 1.26 Å. In the sixth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one C(15) and one H(19) atom. In the seventh O site, O(6) is bonded in a distorted bent 120 degrees geometry to one C(16) and one H(20) atom. In the eighth O site, O(7) is bonded in a water-like geometry to one Cu(2) and one C(15) atom. In the ninth O site, O(8) is bonded in a water-like geometry to one Cu(1) and one C(16) atom. In the tenth O site, O(9,10) is bonded in a single-bond geometry to one C(17,18) atom. In the eleventh O site, O(11) is bonded in a water-like geometry to one Cu(3) and one C(17,18) atom. In the twelfth O site, O(12) is bonded in a water-like geometry to one Cu(3) and one C(17,18) atom. The O(12)-C(17,18) bond length is 1.31 Å. Linkers: 4 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 6 [Cu]. The MOF has largest included sphere 2.35 A, density 1.85 g/cm3, surface area 3967.18 m2/g, accessible volume 0.15 cm3/g