KC3N3H4S3O crystallizes in the triclinic P-1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent N(5), one S(1), two equivalent S(3), one O(2), and two equivalent O(1) atoms. There is one shorter (2.93 Å) and one longer (3.12 Å) K(1)-N(5) bond length. The K(1)-S(1) bond length is 3.27 Å. There is one shorter (3.28 Å) and one longer (3.32 Å) K(1)-S(3) bond length. The K(1)-O(2) bond length is 3.11 Å. There is one shorter (2.69 Å) and one longer (3.05 Å) K(1)-O(1) bond length. In the second K site, K(2) is bonded in a 7-coordinate geometry to one N(1), one S(3), one S(4), two equivalent S(2), one O(1), and one O(2) atom. The K(2)-N(1) bond length is 2.94 Å. The K(2)-S(3) bond length is 3.48 Å. The K(2)-S(4) bond length is 3.25 Å. There is one shorter (3.36 Å) and one longer (3.52 Å) K(2)-S(2) bond length. The K(2)-O(1) bond length is 3.00 Å. The K(2)-O(2) bond length is 2.67 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one N(1), one N(2), and one S(4) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(2) bond length is 1.38 Å. The C(1)-S(4) bond length is 1.68 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one N(1), one N(3), and one S(5) atom. The C(2)-N(1) bond length is 1.35 Å. The C(2)-N(3) bond length is 1.39 Å. The C(2)-S(5) bond length is 1.69 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one N(2), one N(3), and one S(2) atom. The C(3)-N(2) bond length is 1.36 Å. The C(3)-N(3) bond length is 1.36 Å. The C(3)-S(2) bond length is 1.67 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one N(5), one N(6), and one S(3) atom. The C(4)-N(5) bond length is 1.35 Å. The C(4)-N(6) bond length is 1.38 Å. The C(4)-S(3) bond length is 1.69 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one N(4), one N(5), and one S(6) atom. The C(5)-N(4) bond length is 1.38 Å. The C(5)-N(5) bond length is 1.35 Å. The C(5)-S(6) bond length is 1.69 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one N(4), one N(6), and one S(1) atom. The C(6)-N(4) bond length is 1.36 Å. The C(6)-N(6) bond length is 1.36 Å. The C(6)-S(1) bond length is 1.66 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a distorted bent 120 degrees geometry to one K(2), one C(1), and one C(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one H(5) atom. The N(2)-H(5) bond length is 1.04 Å. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(2), one C(3), and one H(6) atom. The N(3)-H(6) bond length is 1.04 Å. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(5), one C(6), and one H(7) atom. The N(4)-H(7) bond length is 1.04 Å. In the fifth N site, N(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one C(4), and one C(5) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one C(4), one C(6), and one H(8) atom. The N(6)-H(8) bond length is 1.05 Å. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(1) atom. The H(2)-O(1) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. The H(3)-O(2) bond length is 0.98 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(2) atom. The H(4)-O(2) bond length is 0.99 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(3) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one N(4) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one N(6) and one S(4) atom. The H(8)-S(4) bond length is 2.16 Å. There are six inequivalent S sites. In the first S site, S(1) is bonded in a bent 150 degrees geometry to one K(1) and one C(6) atom. In the second S site, S(2) is bonded in a 3-coordinate geometry to two equivalent K(2) and one C(3) atom. In the third S site, S(3) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one C(4) atom. In the fourth S site, S(4) is bonded in a 3-coordinate geometry to one K(2), one C(1), and one H(8) atom. In the fifth S site, S(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth S site, S(6) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one K(2), two equivalent K(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one K(1), one K(2), one H(3), and one H(4) atom. Linkers: 4 S=C1[N]C(=S)NC(=S)N1. Metal clusters: 4 [K]. The MOF has largest included sphere 1.42 A, density 1.87 g/cm3, surface area 2629.94 m2/g, accessible volume 0.04 cm3/g