CuC3N2H2S crystallizes in the orthorhombic Fdd2 space group. Cu(1) is bonded to one N(1), one N(2), and two equivalent S(1) atoms to form distorted corner-sharing CuS2N2 tetrahedra. The Cu(1)-N(1) bond length is 2.04 Å. The Cu(1)-N(2) bond length is 1.88 Å. There is one shorter (2.33 Å) and one longer (2.38 Å) Cu(1)-S(1) bond length. There are four inequivalent C sites. In the first 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 1.38 Å. The C(1)-N(1) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to two equivalent C(1) and one H(2) atom. The C(2)-H(2) bond length is 1.09 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to two equivalent N(1) and one H(3) atom. Both C(3)-N(1) bond lengths are 1.34 Å. The C(3)-H(3) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted linear geometry to one N(2) and one S(1) atom. The C(4)-N(2) bond length is 1.18 Å. The C(4)-S(1) bond length is 1.64 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(3) atom. In the second N site, N(2) is bonded in a linear geometry to one Cu(1) and one C(4) atom. There are three 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(3) atom. S(1) is bonded in a trigonal non-coplanar geometry to two equivalent Cu(1) and one C(4) atom. Linkers: 2 c1cncnc1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 1.90 A, density 2.34 g/cm3, surface area 2930.04 m2/g, accessible volume 0.06 cm3/g