K2CdC14H6(NO4)2 crystallizes in the triclinic P-1 space group. There are three inequivalent K sites. In the first K site, K(1,3) is bonded in a 6-coordinate geometry to one O(1), one O(16), one O(4), one O(5), and two equivalent O(11) atoms. The K(1,3)-O(1) bond length is 2.78 Å. The K(1,3)-O(16) bond length is 2.85 Å. The K(1,3)-O(4) bond length is 2.78 Å. The K(1,3)-O(5) bond length is 2.97 Å. There is one shorter (2.72 Å) and one longer (2.73 Å) K(1,3)-O(11) bond length. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(15), one O(2), one O(3), one O(6), and two equivalent O(12) atoms. The K(2)-O(15) bond length is 2.85 Å. The K(2)-O(2) bond length is 2.78 Å. The K(2)-O(3) bond length is 2.78 Å. The K(2)-O(6) bond length is 2.97 Å. There is one shorter (2.72 Å) and one longer (2.73 Å) K(2)-O(12) bond length. In the third K site, K(4) is bonded in a 6-coordinate geometry to one O(14), one O(2), one O(4), one O(8), and two equivalent O(9) atoms. The K(4)-O(14) bond length is 2.85 Å. The K(4)-O(2) bond length is 2.79 Å. The K(4)-O(4) bond length is 2.78 Å. The K(4)-O(8) bond length is 2.97 Å. There is one shorter (2.72 Å) and one longer (2.73 Å) K(4)-O(9) bond length. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a distorted octahedral geometry to one N(1), one N(2), one O(15), one O(16), one O(5), and one O(6) atom. The Cd(1)-N(1) bond length is 2.32 Å. The Cd(1)-N(2) bond length is 2.32 Å. The Cd(1)-O(15) bond length is 2.29 Å. The Cd(1)-O(16) bond length is 2.29 Å. The Cd(1)-O(5) bond length is 2.35 Å. The Cd(1)-O(6) bond length is 2.35 Å. In the second Cd site, Cd(2) is bonded in a distorted octahedral geometry to one N(3), one N(4), one O(13), one O(14), one O(7), and one O(8) atom. The Cd(2)-N(3) bond length is 2.32 Å. The Cd(2)-N(4) bond length is 2.32 Å. The Cd(2)-O(13) bond length is 2.29 Å. The Cd(2)-O(14) bond length is 2.30 Å. The Cd(2)-O(7) bond length is 2.35 Å. The Cd(2)-O(8) bond length is 2.35 Å. There are twenty-seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(17), one C(9), and one N(1) atom. The C(1)-C(17) bond length is 1.40 Å. The C(1)-C(9) bond length is 1.53 Å. The C(1)-N(1) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(10), one C(18), and one N(2) atom. The C(2)-C(10) bond length is 1.53 Å. The C(2)-C(18) bond length is 1.40 Å. The C(2)-N(2) bond length is 1.35 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(11), one C(19), and one N(3) atom. The C(3)-C(11) bond length is 1.53 Å. The C(3)-C(19) bond length is 1.40 Å. The C(3)-N(3) bond length is 1.35 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(12), one C(20), and one N(4) atom. The C(4)-C(12) bond length is 1.53 Å. The C(4)-C(20) bond length is 1.40 Å. The C(4)-N(4) bond length is 1.35 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(13), one N(1), and one H(1) atom. The C(5)-C(13) bond length is 1.39 Å. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(1) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(14), one N(2), and one H(2) atom. The C(6)-C(14) bond length is 1.39 Å. The C(6)-N(2) bond length is 1.34 Å. The C(6)-H(2) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(15), one N(3), and one H(3) atom. The C(7)-C(15) bond length is 1.39 Å. The C(7)-N(3) bond length is 1.34 Å. The C(7)-H(3) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(16), one N(4), and one H(4) atom. The C(8)-C(16) bond length is 1.39 Å. The C(8)-N(4) bond length is 1.34 Å. The C(8)-H(4) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(5) atom. The C(9)-O(1) bond length is 1.26 Å. The C(9)-O(5) bond length is 1.28 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(6) atom. The C(10)-O(2) bond length is 1.26 Å. The C(10)-O(6) bond length is 1.28 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(7) atom. The C(11)-O(3) bond length is 1.26 Å. The C(11)-O(7) bond length is 1.28 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(4), and one O(8) atom. The C(12)-O(4) bond length is 1.26 Å. The C(12)-O(8) bond length is 1.28 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(21), one C(5), and one H(5) atom. The C(13)-C(21) bond length is 1.39 Å. The C(13)-H(5) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(22), one C(6), and one H(6) atom. The C(14)-C(22) bond length is 1.39 Å. The C(14)-H(6) bond length is 1.09 Å. In the fifteenth C site, C(15) is bonded in a distorted trigonal planar geometry to one C(23), one C(7), and one H(7) atom. The C(15)-C(23) bond length is 1.39 Å. The C(15)-H(7) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(24), one C(8), and one H(8) atom. The C(16)-C(24) bond length is 1.39 Å. The C(16)-H(8) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(1); one C(21); and one C(25,27) atom. The C(17)-C(21) bond length is 1.40 Å. The C(17)-C(25,27) bond length is 1.51 Å. In the eighteenth C site, C(18) is bonded in a trigonal planar geometry to one C(2), one C(22), and one C(26) atom. The C(18)-C(22) bond length is 1.40 Å. The C(18)-C(26) bond length is 1.51 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(23); one C(25,27); and one C(3) atom. The C(19)-C(23) bond length is 1.40 Å. The C(19)-C(25,27) bond length is 1.51 Å. In the twentieth C site, C(20) is bonded in a trigonal planar geometry to one C(24), one C(28), and one C(4) atom. The C(20)-C(24) bond length is 1.40 Å. The C(20)-C(28) bond length is 1.51 Å. In the twenty-first C site, C(21) is bonded in a distorted trigonal planar geometry to one C(13); one C(17); and one H(9,10,11,12) atom. The C(21)-H(9,10,11,12) bond length is 1.09 Å. In the twenty-second C site, C(22) is bonded in a distorted trigonal planar geometry to one C(14); one C(18); and one H(9,10,11,12) atom. The C(22)-H(9,10,11,12) bond length is 1.09 Å. In the twenty-third C site, C(23) is bonded in a distorted trigonal planar geometry to one C(15); one C(19); and one H(9,10,11,12) atom. The C(23)-H(9,10,11,12) bond length is 1.09 Å. In the twenty-fourth C site, C(24) is bonded in a distorted trigonal planar geometry to one C(16); one C(20); and one H(9,10,11,12) atom. The C(24)-H(9,10,11,12) bond length is 1.09 Å. In the twenty-fifth C site, C(25,27) is bonded in a distorted bent 120 degrees geometry to one C(17), one O(13), and one O(9) atom. The C(25,27)-O(13) bond length is 1.28 Å. The C(25,27)-O(9) bond length is 1.26 Å. In the twenty-sixth C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(18), one O(10), and one O(14) atom. The C(26)-O(10) bond length is 1.26 Å. The C(26)-O(14) bond length is 1.28 Å. In the twenty-seventh C site, C(28) is bonded in a distorted bent 120 degrees geometry to one C(20), one O(12), and one O(16) atom. The C(28)-O(12) bond length is 1.26 Å. The C(28)-O(16) bond length is 1.28 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cd(1), one C(1), and one C(5) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cd(1), one C(2), and one C(6) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cd(2), one C(3), and one C(7) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Cd(2), one C(4), and one C(8) atom. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) 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(13) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(15) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(16) atom. In the ninth H site, H(9,10,11,12) is bonded in a single-bond geometry to one C(21) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1,3) and one C(9) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), one K(4), and one C(10) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1,3); one K(2); and one C(11) atom. The O(3)-K(1,3) bond length is 2.78 Å. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1,3); one K(4); and one C(12) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1,3); one Cd(1); and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(2), one Cd(1), and one C(10) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1,3); one Cd(2); and one C(11) atom. The O(7)-K(1,3) bond length is 2.97 Å. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one K(4), one Cd(2), and one C(12) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to two equivalent K(4) and one C(25,27) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to two equivalent K(1,3) and one C(26) atom. There is one shorter (2.72 Å) and one longer (2.73 Å) O(10)-K(1,3) bond length. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to two equivalent K(1,3) and one C(25,27) atom. The O(11)-C(25,27) bond length is 1.26 Å. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to two equivalent K(2) and one C(28) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one K(1,3); one Cd(2); and one C(25,27) atom. The O(13)-K(1,3) bond length is 2.85 Å. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one K(4), one Cd(2), and one C(26) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one K(2); one Cd(1); and one C(25,27) atom. The O(15)-C(25,27) bond length is 1.28 Å. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one K(1,3); one Cd(1); and one C(28) atom. Linkers: 8 [O]C(=O)c1cccnc1C([O])=O. Metal clusters: 8 [K] ,4 [Cd]. The MOF has largest included sphere 1.81 A, density 2.06 g/cm3, surface area 2162.24 m2/g, accessible volume 0.05 cm3/g