Sm2C36N7H37O22 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. The Sm(1)-O(1) bond length is 2.37 Å. The Sm(1)-O(2) bond length is 2.38 Å. The Sm(1)-O(3) bond length is 2.41 Å. The Sm(1)-O(4) bond length is 2.52 Å. The Sm(1)-O(5) bond length is 2.46 Å. The Sm(1)-O(6) bond length is 2.36 Å. The Sm(1)-O(7) bond length is 2.46 Å. The Sm(1)-O(8) bond length is 2.49 Å. There are nineteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(6) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(3) bond length is 1.27 Å. The C(1)-O(6) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(10), and one C(9) atom. The C(2)-C(10) bond length is 1.40 Å. The C(2)-C(9) bond length is 1.40 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(9) atom. The C(3)-C(4) bond length is 1.50 Å. The C(3)-C(5) bond length is 1.40 Å. The C(3)-C(9) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(4), and one O(7) atom. The C(4)-O(4) bond length is 1.27 Å. The C(4)-O(7) bond length is 1.28 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(11), one C(3), and one H(3) atom. The C(5)-C(11) bond length is 1.39 Å. The C(5)-H(3) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(12), one C(7), and one C(8) atom. The C(6)-C(12) bond length is 1.40 Å. The C(6)-C(7) bond length is 1.51 Å. The C(6)-C(8) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(5) atom. The C(7)-O(1) bond length is 1.27 Å. The C(7)-O(5) bond length is 1.27 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(13), one C(6), and one H(4) atom. The C(8)-C(13) bond length is 1.40 Å. The C(8)-H(4) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(2), one C(3), and one H(1) atom. The C(9)-H(1) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(11), one C(2), and one H(2) atom. The C(10)-C(11) bond length is 1.39 Å. The C(10)-H(2) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(5), and one N(1) atom. The C(11)-N(1) bond length is 1.47 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to two equivalent C(6) and one H(5) atom. The C(12)-H(5) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to two equivalent C(8) and one N(2) atom. The C(13)-N(2) bond length is 1.47 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one N(4), one H(6), and one O(2) atom. The C(14)-N(4) bond length is 1.33 Å. The C(14)-H(6) bond length is 1.10 Å. The C(14)-O(2) bond length is 1.26 Å. In the fifteenth C site, C(15) is bonded to one N(4), one H(10), one H(11), and one H(12) atom to form corner-sharing CH3N tetrahedra. The C(15)-N(4) bond length is 1.45 Å. The C(15)-H(10) bond length is 1.10 Å. The C(15)-H(11) bond length is 1.09 Å. The C(15)-H(12) bond length is 1.10 Å. In the sixteenth C site, C(16) is bonded to one N(3), one H(13), one H(14), and one H(15) atom to form corner-sharing CH3N tetrahedra. The C(16)-N(3) bond length is 1.45 Å. The C(16)-H(13) bond length is 1.10 Å. The C(16)-H(14) bond length is 1.10 Å. The C(16)-H(15) bond length is 1.10 Å. In the seventeenth C site, C(17) is bonded to one N(3), one H(16), one H(17), and one H(18) atom to form corner-sharing CH3N tetrahedra. The C(17)-N(3) bond length is 1.45 Å. The C(17)-H(16) bond length is 1.10 Å. The C(17)-H(17) bond length is 1.10 Å. The C(17)-H(18) bond length is 1.09 Å. In the eighteenth C site, C(18) is bonded in a trigonal planar geometry to one N(3), one H(19), and one O(8) atom. The C(18)-N(3) bond length is 1.34 Å. The C(18)-H(19) bond length is 1.10 Å. The C(18)-O(8) bond length is 1.25 Å. In the nineteenth C site, C(19) is bonded to one N(4), one H(7), one H(8), and one H(9) atom to form corner-sharing CH3N tetrahedra. The C(19)-N(4) bond length is 1.45 Å. The C(19)-H(7) bond length is 1.09 Å. The C(19)-H(8) bond length is 1.10 Å. The C(19)-H(9) bond length is 1.10 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(11), one O(10), and one O(9) atom. The N(1)-O(10) bond length is 1.24 Å. The N(1)-O(9) bond length is 1.25 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(13) and two equivalent O(11) atoms. Both N(2)-O(11) bond lengths are 1.24 Å. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(16), one C(17), and one C(18) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(14), one C(15), and one C(19) atom. There are nineteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(10) 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(12) 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(19) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(19) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(19) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(15) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(15) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(15) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(16) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(16) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(16) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(17) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(17) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(17) atom. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one C(18) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Sm(1) and one C(7) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sm(1) and one C(14) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sm(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Sm(1) and one C(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Sm(1) and one C(7) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sm(1) and one C(1) atom. In the seventh O site, O(7) is bonded in a distorted L-shaped geometry to one Sm(1) and one C(4) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Sm(1) and one C(18) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one N(1) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one N(1) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one N(2) atom. Linkers: 6 [O]C(=O)c1cc(C([O])=O)cc([N+](=O)[O-])c1. Metal clusters: 4 [Sm]. The MOF has largest included sphere 4.05 A, density 1.55 g/cm3, surface area 4047.06 m2/g, accessible volume 0.23 cm3/g