Acta Cryst. (2004). E60, o687-o689  [ doi:10.1107/S1600536804007081 ]

Bis(guanidinium) 5-sulfosalicylate monohydrate

G. Smith, U. D. Wermuth and P. C. Healy

Abstract: The crystal structure of the hydrated proton-transfer compound hydrate of 3-carboxy-4-hydroxybenzenesulfonic acid (5-sulfosalicylic acid) with guanidine, 2CH₆N₃⁺·C₇H₄O₆S^2-·H₂O, reveals the presence of an extensively hydrogen-bonded three-dimensional network polymer in which all proton donor and acceptor atoms on the two guanidine cations, the dianionic sulfosalicylate anion and the water molecule are utilized. The structure is significantly different chemically and structurally from that of the previously reported anhydrous guanidinium sulfosalicylate compound CH₆N₃⁺·C₇H₅O₆S^-.

Online 31 March 2004

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