Cd3C16N4H16S2O15 crystallizes in the triclinic P-1 space group. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 7-coordinate geometry to one O(15), one O(2), one O(4), one O(5), one O(6), and two equivalent O(10) atoms. The Cd(1)-O(15) bond length is 2.40 Å. The Cd(1)-O(2) bond length is 2.40 Å. The Cd(1)-O(4) bond length is 2.29 Å. The Cd(1)-O(5) bond length is 2.65 Å. The Cd(1)-O(6) bond length is 2.33 Å. There is one shorter (2.37 Å) and one longer (2.48 Å) Cd(1)-O(10) bond length. In the second Cd site, Cd(2) is bonded to one N(4), one O(1), one O(12), one O(13), one O(15), and one O(6) atom to form CdNO5 octahedra that share  a cornercorner with one S(1)O4 tetrahedra and  a cornercorner with one S(2)O4 tetrahedra. The Cd(2)-N(4) bond length is 2.25 Å. The Cd(2)-O(1) bond length is 2.34 Å. The Cd(2)-O(12) bond length is 2.40 Å. The Cd(2)-O(13) bond length is 2.29 Å. The Cd(2)-O(15) bond length is 2.49 Å. The Cd(2)-O(6) bond length is 2.34 Å. In the third Cd site, Cd(3) is bonded in a 7-coordinate geometry to one N(1), one O(1), one O(11), one O(14), one O(2), one O(8), and one O(9) atom. The Cd(3)-N(1) bond length is 2.27 Å. The Cd(3)-O(1) bond length is 2.49 Å. The Cd(3)-O(11) bond length is 2.33 Å. The Cd(3)-O(14) bond length is 2.44 Å. The Cd(3)-O(2) bond length is 2.47 Å. The Cd(3)-O(8) bond length is 2.34 Å. The Cd(3)-O(9) bond length is 2.77 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(1) atom. The C(1)-N(1) bond length is 1.33 Å. The C(1)-N(2) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.08 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(3), one C(7), and one H(2) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(7) bond length is 1.40 Å. The C(2)-H(2) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one N(1) atom. The C(3)-C(6) bond length is 1.42 Å. The C(3)-N(1) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(7) and one H(3) atom. The C(4)-C(7) bond length is 1.41 Å. The C(4)-H(3) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(4) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(4) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one N(2) atom. The C(6)-N(2) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(15), one C(2), and one C(4) atom. The C(7)-C(15) bond length is 1.49 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(10), one C(11), and one H(5) atom. The C(8)-C(10) bond length is 1.42 Å. The C(8)-C(11) bond length is 1.39 Å. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a bent 120 degrees geometry to one C(10), one O(4), and one O(5) atom. The C(9)-C(10) bond length is 1.48 Å. The C(9)-O(4) bond length is 1.28 Å. The C(9)-O(5) bond length is 1.29 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(12), one C(8), and one C(9) atom. The C(10)-C(12) bond length is 1.40 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(14), one C(8), and one H(6) atom. The C(11)-C(14) bond length is 1.40 Å. The C(11)-H(6) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(10), one C(13), and one H(7) atom. The C(12)-C(13) bond length is 1.39 Å. The C(12)-H(7) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(12), one C(14), and one N(3) atom. The C(13)-C(14) bond length is 1.42 Å. The C(13)-N(3) bond length is 1.38 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(11), one C(13), and one N(4) atom. The C(14)-N(4) bond length is 1.39 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(11), and one O(12) atom. The C(15)-O(11) bond length is 1.27 Å. The C(15)-O(12) bond length is 1.30 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one N(3), one N(4), and one H(10) atom. The C(16)-N(3) bond length is 1.35 Å. The C(16)-N(4) bond length is 1.34 Å. The C(16)-H(10) bond length is 1.08 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(3), one C(1), and one C(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(6), and one H(8) atom. The N(2)-H(8) bond length is 1.03 Å. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(13), one C(16), and one H(9) atom. The N(3)-H(9) bond length is 1.04 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(14), and one C(16) atom. There are sixteen 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(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(12) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one N(2) and one O(7) atom. The H(8)-O(7) bond length is 1.76 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one N(3) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(16) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one O(13) atom. The H(11)-O(13) bond length is 1.00 Å. In the twelfth H site, H(12) is bonded in a distorted single-bond geometry to one O(13) and one O(7) atom. The H(12)-O(13) bond length is 1.00 Å. The H(12)-O(7) bond length is 1.64 Å. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one O(14) atom. The H(13)-O(14) bond length is 0.99 Å. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one O(14) atom. The H(14)-O(14) bond length is 0.98 Å. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one O(15) atom. The H(15)-O(15) bond length is 1.00 Å. In the sixteenth H site, H(16) is bonded in a distorted single-bond geometry to one O(12) and one O(15) atom. The H(16)-O(12) bond length is 1.66 Å. The H(16)-O(15) bond length is 1.01 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(9) atom to form SO4 tetrahedra that share  a cornercorner with one Cd(2)NO5 octahedra. The corner-sharing octahedral tilt angles are 60°. The S(1)-O(1) bond length is 1.52 Å. The S(1)-O(2) bond length is 1.52 Å. The S(1)-O(3) bond length is 1.46 Å. The S(1)-O(9) bond length is 1.48 Å. In the second S site, S(2) is bonded to one O(10), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share  a cornercorner with one Cd(2)NO5 octahedra. The corner-sharing octahedral tilt angles are 57°. The S(2)-O(10) bond length is 1.50 Å. The S(2)-O(6) bond length is 1.52 Å. The S(2)-O(7) bond length is 1.48 Å. The S(2)-O(8) bond length is 1.46 Å. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cd(2), one Cd(3), and one S(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(3), and one S(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one S(1) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Cd(1) and one C(9) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Cd(1) and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cd(1), one Cd(2), and one S(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one H(12), one H(8), and one S(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Cd(3) and one S(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Cd(3) and one S(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to two equivalent Cd(1) and one S(2) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Cd(3) and one C(15) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(15), and one H(16) atom. In the thirteenth O site, O(13) is bonded in a distorted water-like geometry to one Cd(2), one H(11), and one H(12) atom. In the fourteenth O site, O(14) is bonded in a water-like geometry to one Cd(3), one H(13), and one H(14) atom. In the fifteenth O site, O(15) is bonded in a water-like geometry to one Cd(1), one Cd(2), one H(15), and one H(16) atom. Linkers: 2 [O]C(=O)c1ccc2[nH]cnc2c1 ,2 [O]C(=O)c1ccc2nc[nH]c2c1. Metal clusters: 6 [Cd]. The MOF has largest included sphere 1.74 A, density 2.69 g/cm3, surface area 2605.27 m2/g, accessible volume 0.07 cm3/g