Cd2C20N4H22S2O11 crystallizes in the monoclinic C2 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one N(1), one N(3), one O(1), one O(10), one O(8), and one O(9) atom to form CdN2O4 octahedra that share  a cornercorner with one S(1)O4 tetrahedra and  a cornercorner with one S(2)O4 tetrahedra. The Cd(1)-N(1) bond length is 2.33 Å. The Cd(1)-N(3) bond length is 2.30 Å. The Cd(1)-O(1) bond length is 2.40 Å. The Cd(1)-O(10) bond length is 2.49 Å. The Cd(1)-O(8) bond length is 2.27 Å. The Cd(1)-O(9) bond length is 2.36 Å. In the second Cd site, Cd(2) is bonded to one N(2), one N(4), one O(11), one O(3), one O(4), one O(5), and one O(7) atom to form distorted CdN2O5 pentagonal bipyramids that share corners with two equivalent S(1)O4 tetrahedra and  an edgeedge with one S(2)O4 tetrahedra. The Cd(2)-N(2) bond length is 2.29 Å. The Cd(2)-N(4) bond length is 2.27 Å. The Cd(2)-O(11) bond length is 2.35 Å. The Cd(2)-O(3) bond length is 2.50 Å. The Cd(2)-O(4) bond length is 2.74 Å. The Cd(2)-O(5) bond length is 2.38 Å. The Cd(2)-O(7) bond length is 2.73 Å. There are twenty inequivalent C sites. In the first C site, C(17) is bonded in a distorted single-bond geometry to one C(16), one C(18), and one H(14) atom. The C(17)-C(16) bond length is 1.39 Å. The C(17)-C(18) bond length is 1.41 Å. The C(17)-H(14) bond length is 1.09 Å. In the second C site, C(18) is bonded in a trigonal planar geometry to one C(13), one C(17), and one C(19) atom. The C(18)-C(13) bond length is 1.48 Å. The C(18)-C(19) bond length is 1.40 Å. In the third C site, C(19) is bonded in a distorted single-bond geometry to one C(18), one C(20), and one H(15) atom. The C(19)-C(20) bond length is 1.39 Å. The C(19)-H(15) bond length is 1.09 Å. In the fourth C site, C(20) is bonded in a distorted trigonal planar geometry to one C(19), one N(4), and one H(16) atom. The C(20)-N(4) bond length is 1.35 Å. The C(20)-H(16) bond length is 1.09 Å. In the fifth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1) bond length is 1.09 Å. In the sixth C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(2) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(2) bond length is 1.09 Å. In the seventh C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.48 Å. In the eighth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(3) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(3) bond length is 1.09 Å. In the ninth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(4) atom. The C(5)-N(1) bond length is 1.35 Å. The C(5)-H(4) bond length is 1.09 Å. In the tenth C site, C(6) is bonded in a trigonal planar geometry to one C(10), one C(3), and one C(7) atom. The C(6)-C(10) bond length is 1.41 Å. The C(6)-C(7) bond length is 1.40 Å. In the eleventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6), one C(8), and one H(5) atom. The C(7)-C(8) bond length is 1.39 Å. The C(7)-H(5) bond length is 1.09 Å. In the twelfth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(7), one N(2), and one H(6) atom. The C(8)-N(2) bond length is 1.34 Å. The C(8)-H(6) bond length is 1.09 Å. In the thirteenth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(10), one N(2), and one H(7) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-N(2) bond length is 1.35 Å. The C(9)-H(7) bond length is 1.09 Å. In the fourteenth C site, C(10) is bonded in a distorted single-bond geometry to one C(6), one C(9), and one H(8) atom. The C(10)-H(8) bond length is 1.09 Å. In the fifteenth C site, C(11) is bonded in a distorted trigonal planar geometry to one C(12), one N(3), and one H(9) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-N(3) bond length is 1.35 Å. The C(11)-H(9) bond length is 1.09 Å. In the sixteenth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(11), one C(13), and one H(10) atom. The C(12)-C(13) bond length is 1.40 Å. The C(12)-H(10) bond length is 1.09 Å. In the seventeenth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(18) atom. The C(13)-C(14) bond length is 1.41 Å. In the eighteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(11) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(11) bond length is 1.09 Å. In the nineteenth C site, C(15) is bonded in a distorted trigonal planar geometry to one C(14), one N(3), and one H(12) atom. The C(15)-N(3) bond length is 1.35 Å. The C(15)-H(12) bond length is 1.09 Å. In the twentieth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(17), one N(4), and one H(13) atom. The C(16)-N(4) bond length is 1.35 Å. The C(16)-H(13) bond length is 1.09 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(2), one C(8), and one C(9) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cd(1), one C(11), and one C(15) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Cd(2), one C(16), and one C(20) atom. There are twenty-two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(10) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(11) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(12) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(14) 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(17) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(19) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(20) atom. In the seventeenth H site, H(17) is bonded in a distorted single-bond geometry to one O(7) and one O(9) atom. The H(17)-O(7) bond length is 1.65 Å. The H(17)-O(9) bond length is 1.01 Å. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one O(9) atom. The H(18)-O(9) bond length is 0.99 Å. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one O(10) atom. The H(19)-O(10) bond length is 0.97 Å. In the twentieth H site, H(20) is bonded in a distorted single-bond geometry to one O(10) and one O(3) atom. The H(20)-O(10) bond length is 1.02 Å. The H(20)-O(3) bond length is 1.63 Å. In the twenty-first H site, H(21) is bonded in a single-bond geometry to one O(11) atom. The H(21)-O(11) bond length is 0.99 Å. In the twenty-second H site, H(22) is bonded in a single-bond geometry to one O(11) atom. The H(22)-O(11) bond length is 0.99 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share  a cornercorner with one Cd(1)N2O4 octahedra and corners with two equivalent Cd(2)N2O5 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 55°. The S(1)-O(1) bond length is 1.52 Å. The S(1)-O(2) bond length is 1.47 Å. The S(1)-O(3) bond length is 1.52 Å. The S(1)-O(4) bond length is 1.49 Å. In the second S site, S(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share  a cornercorner with one Cd(1)N2O4 octahedra and  an edgeedge with one Cd(2)N2O5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 42°. The S(2)-O(5) bond length is 1.51 Å. The S(2)-O(6) bond length is 1.47 Å. The S(2)-O(7) bond length is 1.51 Å. The S(2)-O(8) bond length is 1.51 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Cd(1) and one S(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cd(2), one H(20), and one S(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Cd(2) and one S(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cd(2) and one S(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one S(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Cd(2), one H(17), and one S(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one S(2) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Cd(1), one H(17), and one H(18) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Cd(1), one H(19), and one H(20) atom. In the eleventh O site, O(11) is bonded in a distorted water-like geometry to one Cd(2), one H(21), and one H(22) atom. Linkers: 4 c1cc(-c2ccncc2)ccn1. Metal clusters: 4 [Cd]. The MOF has largest included sphere 3.83 A, density 1.89 g/cm3, surface area 3566.29 m2/g, accessible volume 0.12 cm3/g