Na2PdC20H22(NO4)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted pentagonal planar geometry to one O(5), one O(6), one O(7), and two equivalent O(3) atoms. The Na(1)-O(5) bond length is 2.50 Å. The Na(1)-O(6) bond length is 2.29 Å. The Na(1)-O(7) bond length is 2.33 Å. There is one shorter (2.31 Å) and one longer (2.36 Å) Na(1)-O(3) bond length. In the second Na site, Na(2) is bonded in a distorted pentagonal planar geometry to one O(5), one O(6), one O(8), and two equivalent O(4) atoms. The Na(2)-O(5) bond length is 2.29 Å. The Na(2)-O(6) bond length is 2.49 Å. The Na(2)-O(8) bond length is 2.32 Å. There is one shorter (2.32 Å) and one longer (2.36 Å) Na(2)-O(4) bond length. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a square co-planar geometry to two equivalent N(1) and two equivalent O(1) atoms. Both Pd(1)-N(1) bond lengths are 2.02 Å. Both Pd(1)-O(1) bond lengths are 2.02 Å. In the second Pd site, Pd(2) is bonded in a square co-planar geometry to two equivalent N(2) and two equivalent O(2) atoms. Both Pd(2)-N(2) bond lengths are 2.02 Å. Both Pd(2)-O(2) bond lengths are 2.02 Å. There are twenty inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. The C(1)-O(1) bond length is 1.30 Å. The C(1)-O(3) bond length is 1.24 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(4) atom. The C(2)-O(2) bond length is 1.30 Å. The C(2)-O(4) bond length is 1.24 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one N(1) and one O(5) atom. The C(3)-N(1) bond length is 1.33 Å. The C(3)-O(5) bond length is 1.26 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one N(2) and one O(6) atom. The C(4)-N(2) bond length is 1.33 Å. The C(4)-O(6) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(15), one C(7), and one N(1) atom. The C(5)-C(15) bond length is 1.41 Å. The C(5)-C(7) bond length is 1.41 Å. The C(5)-N(1) bond length is 1.42 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(16), one C(8), and one N(2) atom. The C(6)-C(16) bond length is 1.41 Å. The C(6)-C(8) bond length is 1.41 Å. The C(6)-N(2) bond length is 1.42 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(17), one C(5), and one C(9) atom. The C(7)-C(17) bond length is 1.50 Å. The C(7)-C(9) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(18), and one C(6) atom. The C(8)-C(10) bond length is 1.40 Å. The C(8)-C(18) bond length is 1.50 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(7) and one H(1,2) atom. The C(9)-H(1,2) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(8) and one H(1,2) atom. The C(10)-H(1,2) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(13) and one H(3) atom. The C(11)-C(13) bond length is 1.40 Å. The C(11)-H(3) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(14) and one H(4) atom. The C(12)-C(14) bond length is 1.40 Å. The C(12)-H(4) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(11), one C(15), and one H(5) atom. The C(13)-C(15) bond length is 1.40 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(12), one C(16), and one H(6) atom. The C(14)-C(16) bond length is 1.40 Å. The C(14)-H(6) bond length is 1.09 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(13), one C(19), and one C(5) atom. The C(15)-C(19) bond length is 1.50 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(14), one C(20), and one C(6) atom. The C(16)-C(20) bond length is 1.50 Å. In the seventeenth C site, C(17) is bonded in a distorted trigonal non-coplanar geometry to one C(7), one H(11), one H(7), and one H(9) atom. The C(17)-H(11) bond length is 1.10 Å. The C(17)-H(7) bond length is 1.10 Å. The C(17)-H(9) bond length is 1.10 Å. In the eighteenth C site, C(18) is bonded in a distorted trigonal non-coplanar geometry to one C(8), one H(10), one H(12), and one H(8) atom. The C(18)-H(10) bond length is 1.10 Å. The C(18)-H(12) bond length is 1.10 Å. The C(18)-H(8) bond length is 1.10 Å. In the nineteenth C site, C(19) is bonded in a distorted trigonal non-coplanar geometry to one C(15); one H(13,14); one H(15); and one H(17,18) atom. The C(19)-H(13,14) bond length is 1.10 Å. The C(19)-H(15) bond length is 1.10 Å. The C(19)-H(17,18) bond length is 1.10 Å. In the twentieth C site, C(20) is bonded in a distorted trigonal non-coplanar geometry to one C(16); one H(13,14); one H(16); and one H(17,18) atom. The C(20)-H(13,14) bond length is 1.10 Å. The C(20)-H(16) bond length is 1.10 Å. The C(20)-H(17,18) bond length is 1.10 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Pd(1), one C(3), and one C(5) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Pd(2), one C(4), and one C(6) atom. There are nineteen inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(11) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(12) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(17) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(18) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(17) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(18) atom. In the twelfth H site, H(13,14) is bonded in a single-bond geometry to one C(19) atom. In the thirteenth H site, H(15) is bonded in a single-bond geometry to one C(19) atom. In the fourteenth H site, H(16) is bonded in a single-bond geometry to one C(20) atom. In the fifteenth H site, H(17,18) is bonded in a single-bond geometry to one C(19) atom. In the sixteenth H site, H(19) is bonded in a single-bond geometry to one O(7) atom. The H(19)-O(7) bond length is 0.97 Å. In the seventeenth H site, H(20) is bonded in a single-bond geometry to one O(8) atom. The H(20)-O(8) bond length is 0.98 Å. In the eighteenth H site, H(21) is bonded in a single-bond geometry to one O(7) atom. The H(21)-O(7) bond length is 0.99 Å. In the nineteenth H site, H(22) is bonded in a single-bond geometry to one O(8) atom. The H(22)-O(8) bond length is 0.99 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Pd(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Pd(2) and one C(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Na(2) and one C(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one C(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one C(4) atom. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one Na(1), one H(19), and one H(21) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Na(2), one H(20), and one H(22) atom. Linkers: 4 Cc1cccc(C)c1[N]C(=O)C([O])=O. Metal clusters: 4 [Na] ,2 [Pd]. The MOF has largest included sphere 2.80 A, density 1.58 g/cm3, surface area 4003.48 m2/g, accessible volume 0.12 cm3/g