Materials Data on K2CS3O by Materials Project
K2CS3O crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two K2CS3O ribbons oriented in the (0, 0, 1) direction. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. There are one shorter (2.86 Å) and one longer (2.87 Å) K–O bond lengths. In the second K1+ site, K1+ is bonded in a single-bond geometry to one O2- atom. The K–O bond length is 2.79 Å. C2- is bonded in a trigonal planar geometry to three S+0.67+ atoms. There are a spread of C–S bond distances ranging from 1.71–1.73 Å. There are three inequivalent S+0.67+ sites. In the first S+0.67+ site, S+0.67+ is bonded in a distorted water-like geometry to one C2- and one O2- atom. The S–O bond length is 1.56 Å. In the second S+0.67+ site, S+0.67+ is bonded in a single-bond geometry to one C2- atom. In the third S+0.67+ site, S+0.67+ is bonded in a single-bond geometry to one C2- atom. O2- is bonded in a distorted see-saw-like geometry to three K1+ and one S+0.67+ atom.