NaDyH32(C19O5)2 crystallizes in the tetragonal P4_322 space group. Na(1) is bonded in an L-shaped geometry to two equivalent O(3) atoms. Both Na(1)-O(3) bond lengths are 2.42 Å. Dy(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. Both Dy(1)-O(1) bond lengths are 2.25 Å. Both Dy(1)-O(3) bond lengths are 2.67 Å. Both Dy(1)-O(4) bond lengths are 2.33 Å. There are nineteen inequivalent C sites. In the first C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(2) atom. The C(5)-C(4) bond length is 1.39 Å. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(2) bond length is 0.93 Å. In the second C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(9) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-C(9) bond length is 1.51 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(2) bond length is 1.39 Å. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(8) atom. The C(4)-C(8) bond length is 1.48 Å. In the fifth C site, C(7) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one H(3) atom. The C(7)-C(2) bond length is 1.39 Å. The C(7)-H(3) bond length is 0.93 Å. In the sixth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.25 Å. The C(8)-O(4) bond length is 1.27 Å. In the seventh C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(6) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-C(14) bond length is 1.39 Å. In the eighth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(15), and one C(9) atom. The C(10)-C(11) bond length is 1.39 Å. The C(10)-C(15) bond length is 1.54 Å. In the ninth C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(12) atom. The C(11)-C(11) bond length is 1.50 Å. The C(11)-C(12) bond length is 1.39 Å. In the tenth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), and one O(5) atom. The C(12)-C(13) bond length is 1.39 Å. The C(12)-O(5) bond length is 1.37 Å. In the eleventh C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(16) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-C(16) bond length is 1.60 Å. In the twelfth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(9), and one H(4) atom. The C(14)-H(4) bond length is 0.93 Å. In the thirteenth C site, C(15) is bonded in a trigonal non-coplanar geometry to one C(10), one H(5), one H(6), and one H(7) atom. The C(15)-H(5) bond length is 0.96 Å. The C(15)-H(6) bond length is 0.96 Å. The C(15)-H(7) bond length is 0.96 Å. In the fourteenth C site, C(16) is bonded in a tetrahedral geometry to one C(13), one C(17), one C(18), and one C(19) atom. The C(16)-C(17) bond length is 1.48 Å. The C(16)-C(18) bond length is 1.54 Å. The C(16)-C(19) bond length is 1.51 Å. In the fifteenth C site, C(17) is bonded in a trigonal non-coplanar geometry to one C(16); one H(8); and two equivalent H(9,10,11,12,13) atoms. The C(17)-H(8) bond length is 0.96 Å. Both C(17)-H(9,10,11,12,13) bond lengths are 0.96 Å. In the sixteenth C site, C(18) is bonded in a trigonal non-coplanar geometry to one C(16) and three equivalent H(9,10,11,12,13) atoms. All C(18)-H(9,10,11,12,13) bond lengths are 0.96 Å. In the seventeenth C site, C(19) is bonded in a trigonal non-coplanar geometry to one C(16); one H(15); and two equivalent H(14,16) atoms. The C(19)-H(15) bond length is 0.96 Å. Both C(19)-H(14,16) bond lengths are 0.96 Å. In the eighteenth 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 1.52 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.30 Å. In the nineteenth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) 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(14) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(15) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(15) 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(17) atom. In the ninth H site, H(9,10,11,12,13) is bonded in a single-bond geometry to one C(17) atom. In the tenth H site, H(14,16) is bonded in a single-bond geometry to one C(19) atom. In the eleventh H site, H(15) is bonded in a single-bond geometry to one C(19) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Dy(1) and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one Dy(1), and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Dy(1) and one C(8) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(12) atom. Linkers: 4 Cc1c(-c2cc(C([O])=O)cc(C([O])=O)c2)cc(C(C)(C)C)c([O])c1-c1c(C)c(-c2cc(C([O])=O)cc(C([O])=O)c2)cc(C(C)(C)C)c1[O]. Metal clusters: 4 [Na] ,4 [Dy]. The MOF has largest included sphere 15.99 A, density 0.70 g/cm3, surface area 4091.66 m2/g, accessible volume 1.07 cm3/g