Cd3C17N2H9O11 crystallizes in the triclinic P-1 space group. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one N(1), one O(1), one O(10), one O(2), one O(3), and one O(8) atom to form distorted CdNO5 octahedra that share  a cornercorner with one Cd(3)O6 octahedra,  an edgeedge with one Cd(2)NO5 octahedra, and  an edgeedge with one Cd(3)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Cd(1)-N(1) bond length is 2.25 Å. The Cd(1)-O(1) bond length is 2.48 Å. The Cd(1)-O(10) bond length is 2.32 Å. The Cd(1)-O(2) bond length is 2.50 Å. The Cd(1)-O(3) bond length is 2.37 Å. The Cd(1)-O(8) bond length is 2.29 Å. In the second Cd site, Cd(2) is bonded to one N(2), one O(1), one O(10), one O(5), one O(6), and one O(9) atom to form distorted edge-sharing CdNO5 octahedra. The Cd(2)-N(2) bond length is 2.31 Å. The Cd(2)-O(1) bond length is 2.31 Å. The Cd(2)-O(10) bond length is 2.54 Å. The Cd(2)-O(5) bond length is 2.26 Å. The Cd(2)-O(6) bond length is 2.33 Å. The Cd(2)-O(9) bond length is 2.34 Å. In the third Cd site, Cd(3) is bonded to one O(11), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of edge and corner-sharing CdO6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Cd(3)-O(11) bond length is 2.32 Å. The Cd(3)-O(2) bond length is 2.42 Å. The Cd(3)-O(3) bond length is 2.27 Å. The Cd(3)-O(4) bond length is 2.29 Å. The Cd(3)-O(7) bond length is 2.31 Å. The Cd(3)-O(8) bond length is 2.33 Å. There are seventeen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(13), one C(6), and one N(1) atom. The C(1)-C(13) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.47 Å. The C(1)-N(1) bond length is 1.38 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(8), one C(9), and one H(1) atom. The C(2)-C(8) bond length is 1.39 Å. The C(2)-C(9) bond length is 1.40 Å. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(7) and one H(2) atom. The C(3)-C(7) bond length is 1.40 Å. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(10), and one O(2) atom. The C(4)-C(12) bond length is 1.49 Å. The C(4)-O(10) bond length is 1.28 Å. The C(4)-O(2) bond length is 1.28 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(9) and one H(3) atom. The C(5)-C(9) bond length is 1.40 Å. The C(5)-H(3) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.30 Å. The C(6)-O(4) bond length is 1.26 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(14), one C(3), and one C(8) atom. The C(7)-C(14) bond length is 1.49 Å. The C(7)-C(8) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(2), one C(7), and one H(4) atom. The C(8)-H(4) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(17), one C(2), and one C(5) atom. The C(9)-C(17) bond length is 1.49 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(12) and one H(5) atom. The C(10)-C(12) bond length is 1.40 Å. The C(10)-H(5) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(12) and one H(6) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-H(6) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(4) atom. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(1), one C(15), and one N(2) atom. The C(13)-C(15) bond length is 1.48 Å. The C(13)-N(2) bond length is 1.38 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(1), and one O(5) atom. The C(14)-O(1) bond length is 1.29 Å. The C(14)-O(5) bond length is 1.27 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(6), and one O(7) atom. The C(15)-O(6) bond length is 1.30 Å. The C(15)-O(7) bond length is 1.26 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(7) atom. The C(16)-N(1) bond length is 1.34 Å. The C(16)-N(2) bond length is 1.34 Å. The C(16)-H(7) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(8), and one O(9) atom. The C(17)-O(8) bond length is 1.29 Å. The C(17)-O(9) bond length is 1.26 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one C(16) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(13), and one C(16) atom. There are nine 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(3) 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(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(10) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(16) atom. In the eighth H site, H(8) is bonded in a linear geometry to one O(11) and one O(6) atom. The H(8)-O(11) bond length is 1.01 Å. The H(8)-O(6) bond length is 1.59 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(11) atom. The H(9)-O(11) bond length is 0.97 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(14) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cd(1), one Cd(3), and one C(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cd(1), one Cd(3), and one C(6) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cd(3) and one C(6) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cd(2) and one C(14) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(15), and one H(8) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cd(3) and one C(15) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Cd(1), one Cd(3), and one C(17) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Cd(2) and one C(17) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cd(1), one Cd(2), and one C(4) atom. In the eleventh O site, O(11) is bonded in a distorted water-like geometry to one Cd(3), one H(8), and one H(9) atom. Linkers: 3 [O]C(=O)c1ccc(C([O])=O)cc1 ,2 [O]C(=O)[C]1N=CN=C1C([O])=O. Metal clusters: 6 [Cd]. The MOF has largest included sphere 2.22 A, density 2.76 g/cm3, surface area 2311.67 m2/g, accessible volume 0.05 cm3/g