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 ? = 353.773°) indicate a slight distortion of the pyranose ring.