The first crystal structure of an alkaline metal salt of thioglucose: potassium 1-thio-β-D-glucoside monohydrate

In the crystal structure of the title hydrated salt, poly[(μ2‐aqua)(μ4‐1‐sulfido‐β‐D‐glucoside)potassium], [K(C6H11O5S)(H2O)]n or K+·C6H11O5S−·H2O, each thioglucoside anion coordinates to four K+ cations through three of its four hydroxy groups, forming a three‐dimensional polymeric structure. The negatively charged thiolate group in each anion does not form an efficient coordination bond with a K+ cation, but forms intermolecular hydrogen bonds with four hydroxy groups, which appears to sustain the polymeric structure. The Cremer–Pople parameters for the thioglucoside ligand (Q = 0.575, θ = 8.233° and ϕ = 353.773°) indicate a slight distortion of the pyranose ring.