Acta Cryst. (2005). E61, o47-o48  [ doi:10.1107/S1600536804028971 ]

Disorder in ondansetron hydrochloride dihydrate

M. Bolte, H. S. Yathirajan, B. Nagaraj and P. Nagaraja

Abstract: The structure of the title compound, 2-methyl-1-(1,2,3,9-tetrahydro-9-methyl-4-oxo-4H-carbazol-3-ylmethyl)-1H-imidazol-3-ium chloride dihydrate, C₁₈H₂₄N₃⁺·Cl^-·2H₂O, has been reported previously by Collin, Moureau, Quintero, Vercauteren, Evrard & Durant [(1995). J. Chem. Soc. Perkin Trans. 2, pp. 77-84] and Chandra Mohan & Ravikumar, [(1995), Acta Cryst. C51, 2627-2629]. In both determinations, all atoms were refined as clearly ordered. In contrast to this, we present here a redetermination of this structure from new intensity data where two atoms of the cyclohexenone ring are disordered over two sites. Apart from this disorder, our results agree with the already published data.

Online 11 December 2004

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