Cd3C15N6H8O13 crystallizes in the monoclinic Pc space group. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one N(1), one N(6), one O(11), one O(12), one O(2), and one O(3) atom to form distorted corner-sharing CdN2O4 pentagonal pyramids. The Cd(1)-N(1) bond length is 2.51 Å. The Cd(1)-N(6) bond length is 2.25 Å. The Cd(1)-O(11) bond length is 2.27 Å. The Cd(1)-O(12) bond length is 2.43 Å. The Cd(1)-O(2) bond length is 2.31 Å. The Cd(1)-O(3) bond length is 2.33 Å. In the second Cd site, Cd(2) is bonded to one N(3), one N(5), one O(10), one O(11), one O(12), one O(6), and one O(7) atom to form distorted corner-sharing CdN2O5 pentagonal bipyramids. The Cd(2)-N(3) bond length is 2.38 Å. The Cd(2)-N(5) bond length is 2.22 Å. The Cd(2)-O(10) bond length is 2.62 Å. The Cd(2)-O(11) bond length is 2.54 Å. The Cd(2)-O(12) bond length is 2.41 Å. The Cd(2)-O(6) bond length is 2.31 Å. The Cd(2)-O(7) bond length is 2.58 Å. In the third Cd site, Cd(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(13), one O(2), one O(5), one O(6), and one O(9) atom. The Cd(3)-O(1) bond length is 2.66 Å. The Cd(3)-O(10) bond length is 2.42 Å. The Cd(3)-O(13) bond length is 2.35 Å. The Cd(3)-O(2) bond length is 2.33 Å. The Cd(3)-O(5) bond length is 2.47 Å. The Cd(3)-O(6) bond length is 2.46 Å. The Cd(3)-O(9) bond length is 2.30 Å. There are fifteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.48 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.30 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one N(1) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-N(1) bond length is 1.35 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(4) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(4) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one N(2) atom. The C(4)-C(5) bond length is 1.49 Å. The C(4)-N(2) bond length is 1.37 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.29 Å. The C(5)-O(4) bond length is 1.26 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(5), and one O(6) atom. The C(6)-C(7) bond length is 1.48 Å. The C(6)-O(5) bond length is 1.26 Å. The C(6)-O(6) bond length is 1.29 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one C(8), and one N(3) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-N(3) bond length is 1.35 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(7), one C(9), and one H(5) atom. The C(8)-C(9) bond length is 1.40 Å. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(10), one C(8), and one N(4) atom. The C(9)-C(10) bond length is 1.46 Å. The C(9)-N(4) bond length is 1.37 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(7), and one O(8) atom. The C(10)-O(7) bond length is 1.36 Å. The C(10)-O(8) bond length is 1.23 Å. In the eleventh C site, C(11) is bonded in a bent 120 degrees geometry to one O(10) and one O(9) atom. The C(11)-O(10) bond length is 1.29 Å. The C(11)-O(9) bond length is 1.27 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one N(5) atom. The C(12)-N(5) bond length is 1.36 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(14) and one H(6) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-H(6) bond length is 1.08 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(13), one C(15), and one N(6) atom. The C(14)-C(15) bond length is 1.46 Å. The C(14)-N(6) bond length is 1.36 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(11), and one O(12) atom. The C(15)-O(11) bond length is 1.27 Å. The C(15)-O(12) bond length is 1.29 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cd(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.33 Å. In the second N site, N(2) is bonded in a 3-coordinate geometry to one C(4), one N(1), and one H(2) atom. The N(2)-H(2) bond length is 1.03 Å. In the third N site, N(3) is bonded in a 3-coordinate geometry to one Cd(2), one C(7), and one N(4) atom. The N(3)-N(4) bond length is 1.33 Å. In the fourth N site, N(4) is bonded in a 3-coordinate geometry to one C(9), one N(3), and one H(3) atom. The N(4)-H(3) bond length is 1.05 Å. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(12), and one N(6) atom. The N(5)-N(6) bond length is 1.33 Å. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(14), and one N(5) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(7) atom. The H(1)-O(7) bond length is 0.99 Å. 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 distorted linear geometry to one N(4) and one O(4) atom. The H(3)-O(4) bond length is 1.66 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(13) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(13) and one O(3) atom. The H(7)-O(13) bond length is 1.00 Å. The H(7)-O(3) bond length is 1.72 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(13) atom. The H(8)-O(13) bond length is 0.97 Å. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cd(3) and one C(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(3), and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one C(5), and one H(7) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one C(5) and one H(3) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Cd(3) and one C(6) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cd(2), one Cd(3), and one C(6) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Cd(2), one C(10), and one H(1) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(10) atom. In the ninth O site, O(9) is bonded in an L-shaped geometry to one Cd(3) and one C(11) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Cd(2), one Cd(3), and one C(11) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(15) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(15) atom. In the thirteenth O site, O(13) is bonded in a distorted water-like geometry to one Cd(3), one H(7), and one H(8) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)[nH]n1 ,2 [O]C(=O)c1cc(C(=O)O)[nH]n1 ,1 [O]C(=O)C1=CC(C([O])=O)=N[N]1 ,1 [O]C(=O)[C]1C=C(C([O])=O)N=N1. Metal clusters: 6 [Cd]. The MOF has largest included sphere 4.06 A, density 2.01 g/cm3, surface area 2948.79 m2/g, accessible volume 0.21 cm3/g