K2PdC44H24S4(NO3)4 crystallizes in the tetragonal I4_1/acd space group. K(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted edge-sharing KO6 octahedra. Both K(1)-O(1) bond lengths are 3.04 Å. There are two shorter (2.61 Å) and two longer (2.84 Å) K(1)-O(2) bond lengths. Pd(1) is bonded in a rectangular see-saw-like geometry to four equivalent N(1) atoms. All Pd(1)-N(1) bond lengths are 2.00 Å. There are eleven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(5), and one N(1) atom. The C(1)-C(2) bond length is 1.46 Å. The C(1)-C(5) bond length is 1.36 Å. The C(1)-N(1) bond length is 1.46 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 0.95 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.44 Å. The C(3)-H(2) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one N(1) atom. The C(4)-C(5) bond length is 1.42 Å. The C(4)-N(1) bond length is 1.41 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(6) atom. The C(5)-C(6) bond length is 1.44 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(11), one C(5), and one C(7) atom. The C(6)-C(11) bond length is 1.40 Å. The C(6)-C(7) bond length is 1.37 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(6) and one H(3) atom. The C(7)-H(3) bond length is 0.95 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(9) and one H(4) atom. The C(8)-C(9) bond length is 1.33 Å. The C(8)-H(4) bond length is 0.95 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(8), and one S(1) atom. The C(9)-C(10) bond length is 1.38 Å. The C(9)-S(1) bond length is 1.86 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(11), one C(9), and one H(5) atom. The C(10)-C(11) bond length is 1.39 Å. The C(10)-H(5) bond length is 0.95 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(10), one C(6), and one H(6) atom. The C(11)-H(6) bond length is 0.95 Å. N(1) is bonded in a trigonal planar geometry to one Pd(1), one C(1), and one C(4) atom. There are six 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(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(10) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(9), one O(1), one O(2), and one O(3) atom. The S(1)-O(1) bond length is 1.38 Å. The S(1)-O(2) bond length is 1.35 Å. The S(1)-O(3) bond length is 1.29 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one K(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one S(1) atom. Linkers: 8 [O]S(c1ccc(cc1)C1=C2C=CC3=[N]2[Pd@@]24n5c1ccc5C(=C1[N]2=C(C=C1)C(=c1n4c(=C3c2ccc(cc2)S([O])([O])[O])cc1)c1ccc(cc1)S([O])([O])[O])c1ccc(cc1)S([O])([O])[O])([O])[O]. Metal clusters: 16 [K]. The MOF has largest included sphere 14.83 A, density 0.89 g/cm3, surface area 3763.46 m2/g, accessible volume 0.70 cm3/g