K3BS3 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one S(2), one S(3), and four equivalent S(1) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one B(1), two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms. In the third K site, K(3) is bonded in a 7-coordinate geometry to one B(1), one S(1), two equivalent S(2), and three equivalent S(3) atoms. B(1) is bonded in a distorted trigonal planar geometry to one K(2), one K(3), one S(1), one S(2), and one S(3) atom. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 1-coordinate geometry to one K(3), two equivalent K(2), four equivalent K(1), and one B(1) atom. In the second S site, S(2) is bonded in a 1-coordinate geometry to one K(1), two equivalent K(2), two equivalent K(3), and one B(1) atom. In the third S site, S(3) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), three equivalent K(3), and one B(1) atom.
K3BS3 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one S(2), one S(3), and four equivalent S(1) atoms. The K(1)-S(2) bond length is 3.27 Å. The K(1)-S(3) bond length is 3.17 Å. There are a spread of K(1)-S(1) bond distances ranging from 3.18-3.45 Å. In the second K site, K(2) is bonded in a 7-coordinate geometry to one B(1), two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms. The K(2)-B(1) bond length is 3.37 Å. There is one shorter (3.37 Å) and one longer (3.57 Å) K(2)-S(1) bond length. There is one shorter (3.17 Å) and one longer (3.22 Å) K(2)-S(2) bond length. There is one shorter (3.38 Å) and one longer (3.39 Å) K(2)-S(3) bond length. In the third K site, K(3) is bonded in a 7-coordinate geometry to one B(1), one S(1), two equivalent S(2), and three equivalent S(3) atoms. The K(3)-B(1) bond length is 3.10 Å. The K(3)-S(1) bond length is 3.51 Å. There is one shorter (3.16 Å) and one longer (3.23 Å) K(3)-S(2) bond length. There are a spread of K(3)-S(3) bond distances ranging from 3.19-3.45 Å. B(1) is bonded in a distorted trigonal planar geometry to one K(2), one K(3), one S(1), one S(2), and one S(3) atom. The B(1)-S(1) bond length is 1.83 Å. The B(1)-S(2) bond length is 1.83 Å. The B(1)-S(3) bond length is 1.84 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded in a 1-coordinate geometry to one K(3), two equivalent K(2), four equivalent K(1), and one B(1) atom. In the second S site, S(2) is bonded in a 1-coordinate geometry to one K(1), two equivalent K(2), two equivalent K(3), and one B(1) atom. In the third S site, S(3) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), three equivalent K(3), and one B(1) atom.