2,3-Dimethoxybenzaldehyde isonicotinoylhydrazone chloroform monosolvate, and the mono- and dihydrates of 3,4,5-trimethoxybenzaldehyde isonicotinoylhydrazone: hydrogen-bonded supramolecular strucutures in one, two and three dimensions

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Abstract

In 2,3-dimethoxy­benzaldehyde isonicotinoyl­hydrazone chloro­form monosolvate, C₁₅H₁₅N₃O₃·CHCl₃, the hydrazone mol­ecules are linked by a combination of N-HN and C-HN hydrogen bonds into chains from which the chloro­form mol­ecules are pendent. 3,4,5-Trimethoxy­benzaldehyde isonicotinoyl­hydrazone forms two stoichiometric hydrates. In the monohydrate, C₁₆H₁₇N₃O₄·H₂O, the components are linked into sheets by a combination of O-HO, O-HN and N-HN hydrogen bonds, and in the dihydrate, C₁₆H₁₇N₃O₄·2H₂O, a combination of O-HO, O-HN and N-HO hydrogen bonds links the components into a three-dimensional framework structure.

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Keywords: None Document Type: Research Article DOI: http://dx.doi.org/10.1107/S0108270106052486 Publication date: 1 de Janeiro de 2007