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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Cocrystallization of Hexamethylenetetramine (hmt) with Dicarboxylic Acids. Crystal Structures of Molecular Adducts of hmt with Three Different Dicarboxylic Acids

Wei Li, Jie-Peng Zhang, Ming-Liang Tong and Xiao-Ming Chen

Australian Journal of Chemistry 54(3) 213 - 217
Published: 2001

Abstract

Four hydrogen-bonded networks, both one- and two-dimensional structures, hmt·dsda·0.5H2O (1), hmt·apa (2), hmt·2mbda·H2O (3) and 2hmt·mbda (4) (hmt = hexamethylenetetramine, dsda = 2,2′-dithiosalicylic acid, apa = adipic acid, mbda = meta-benzenedicarboxylic acid), have been self-assembled with hmt and dicarboxylic acids and characterized by X-ray crystallography. Compound (1) is composed of one-dimensional hydrogen-bonded chains, the hydrogen-bonding interactions arising between the carboxylate groups of the dsda molecules. Each pair of chains is then further interconnected by hydrogen-bond bridges of the type dsda···hmt···H2O···hmt···dsda, which results in an approximate ladder-like chain. Compound (2) is composed of one-dimensional hydrogen-bonded zigzag chains. The compounds are both organized in layers in which hydrogen-bonding networks are formed regularly. In (3), hmt acts unprecedentedly as an acceptor of four hydrogen bonds. The four-connected hmt and water molecules, and the two-connected mbda molecules, are interlinked through hydrogen-bonding interactions into a two-dimensional highly wavy layer of (4,4) topology. Compound (4) is composed of a one-dimensional hydrogen-bonded ladder-like chain.

https://doi.org/10.1071/CH01035

© CSIRO 2001

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