Cu2C4H10S(N4O3)2 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one N(1), one N(5), one N(8), one O(5), and one O(6) atom to form distorted corner-sharing CuN3O2 square pyramids. The Cu(1)-N(1) bond length is 1.99 Å. The Cu(1)-N(5) bond length is 1.96 Å. The Cu(1)-N(8) bond length is 2.47 Å. The Cu(1)-O(5) bond length is 1.94 Å. The Cu(1)-O(6) bond length is 1.99 Å. In the second Cu site, Cu(2) is bonded to one N(2), one N(6), one O(1), one O(5), and one O(6) atom to form distorted CuN2O3 square pyramids that share corners with two equivalent Cu(1)N3O2 square pyramids and  a cornercorner with one S(1)O4 tetrahedra. The Cu(2)-N(2) bond length is 1.98 Å. The Cu(2)-N(6) bond length is 1.96 Å. The Cu(2)-O(1) bond length is 2.35 Å. The Cu(2)-O(5) bond length is 1.94 Å. The Cu(2)-O(6) bond length is 1.97 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(7) atom. The C(1)-N(2) bond length is 1.32 Å. The C(1)-N(3) bond length is 1.36 Å. The C(1)-H(7) bond length is 1.08 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(8) atom. The C(2)-N(1) bond length is 1.32 Å. The C(2)-N(3) bond length is 1.36 Å. The C(2)-H(8) bond length is 1.08 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one N(6), one N(7), and one H(9) atom. The C(3)-N(6) bond length is 1.33 Å. The C(3)-N(7) bond length is 1.36 Å. The C(3)-H(9) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(5), one N(7), and one H(10) atom. The C(4)-N(5) bond length is 1.33 Å. The C(4)-N(7) bond length is 1.36 Å. The C(4)-H(10) bond length is 1.08 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.36 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(1), and one N(1) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one C(1), one C(2), and one N(4) atom. The N(3)-N(4) bond length is 1.40 Å. In the fourth N site, N(4) is bonded in a distorted water-like geometry to one N(3), one H(3), and one H(4) atom. The N(4)-H(3) bond length is 1.06 Å. The N(4)-H(4) bond length is 1.02 Å. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(4), and one N(6) atom. The N(5)-N(6) bond length is 1.36 Å. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(3), and one N(5) atom. In the seventh N site, N(7) is bonded in a distorted trigonal planar geometry to one C(3), one C(4), and one N(8) atom. The N(7)-N(8) bond length is 1.39 Å. In the eighth N site, N(8) is bonded in a water-like geometry to one Cu(1), one N(7), one H(5), and one H(6) atom. The N(8)-H(5) bond length is 1.04 Å. The N(8)-H(6) bond length is 1.05 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(3) and one O(5) atom. The H(1)-O(3) bond length is 1.65 Å. The H(1)-O(5) bond length is 1.01 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. The H(2)-O(6) bond length is 0.98 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one N(4) and one O(4) atom. The H(3)-O(4) bond length is 1.66 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(8) and one O(4) atom. The H(6)-O(4) bond length is 1.68 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(1) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(2) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(3) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(4) atom. 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 Cu(2)N2O3 square pyramid. The S(1)-O(1) bond length is 1.50 Å. The S(1)-O(2) bond length is 1.49 Å. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.51 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cu(2) 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 water-like geometry to one H(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one H(3), one H(6), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(2), and one H(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(2), and one H(2) atom. Linkers: 4 Nn1cnnc1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 3.16 A, density 2.02 g/cm3, surface area 3126.12 m2/g, accessible volume 0.14 cm3/g