Cd6C48N8H42S6O27 crystallizes in the trigonal R-3c space group. Cd(1) is bonded to one N(1), one O(1), one O(3), one O(4), and one O(5) atom to form CdNO4 square pyramids that share  a cornercorner with one Cd(1)NO4 square pyramid,  a cornercorner with one C(7)H2N2 tetrahedra, and corners with two equivalent C(8)H2N2 tetrahedra. The Cd(1)-N(1) bond length is 2.35 Å. The Cd(1)-O(1) bond length is 2.28 Å. The Cd(1)-O(3) bond length is 2.26 Å. The Cd(1)-O(4) bond length is 2.26 Å. The Cd(1)-O(5) bond length is 2.30 Å. There are eight 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(1), and one O(2) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.24 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one S(1) atom. The C(2)-C(3) bond length is 1.37 Å. The C(2)-S(1) bond length is 1.72 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(2) atom. The C(3)-H(2) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(3) atom. The C(4)-C(5) bond length is 1.37 Å. The C(4)-H(3) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one S(1) atom. The C(5)-C(6) bond length is 1.49 Å. The C(5)-S(1) bond length is 1.72 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.26 Å. The C(6)-O(4) bond length is 1.25 Å. In the seventh C site, C(7) is bonded to one N(1), one N(2), one H(4), and one H(5) atom to form CH2N2 tetrahedra that share  a cornercorner with one Cd(1)NO4 square pyramid, corners with two equivalent C(7)H2N2 tetrahedra, and corners with two equivalent C(8)H2N2 tetrahedra. The C(7)-N(1) bond length is 1.51 Å. The C(7)-N(2) bond length is 1.45 Å. The C(7)-H(4) bond length is 0.99 Å. The C(7)-H(5) bond length is 0.99 Å. In the eighth C site, C(8) is bonded to two equivalent N(1) and two equivalent H(6,7) atoms to form CH2N2 tetrahedra that share corners with two equivalent Cd(1)NO4 square pyramids, corners with two equivalent C(7)H2N2 tetrahedra, and corners with two equivalent C(8)H2N2 tetrahedra. Both C(8)-N(1) bond lengths are 1.48 Å. Both C(8)-H(6,7) bond lengths are 0.99 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Cd(1), one C(7), and two equivalent C(8) atoms to form corner-sharing NCdC3 tetrahedra. In the second N site, N(2) is bonded in a trigonal non-coplanar geometry to three equivalent C(7) atoms. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) atom. The H(1)-O(5) bond length is 0.86 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) 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(7) 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(6,7) is bonded in a single-bond geometry to one C(8) atom. S(1) is bonded in an L-shaped geometry to one C(2) and one C(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cd(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 bent 120 degrees geometry to one Cd(1) and one C(6) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(6) atom. In the fifth O site, O(5) is bonded in a water-like geometry to two equivalent Cd(1) and two equivalent H(1) atoms. Linkers: 3 C1N2CN3CN1CN(C2)C3 ,12 [O]C(=O)c1ccc(C([O])=O)s1. Metal clusters: 3 O.O=[C]O[Cd]1O[C]O[Cd](O[C]=O)O[C]O1 ,6 [Cd]. The MOF has largest included sphere 5.26 A, density 1.46 g/cm3, surface area 3435.28 m2/g, accessible volume 0.40 cm3/g