A1 Journal article (refereed)
Synthesis, Characterization and Thermal properties of Nine Quaternary Dialkyldiaralkylammonium Chlorides (2006)

Busi, S., Lahtinen, M., Kärnä, M., Valkonen, J., Kolehmainen, E., & Rissanen, K. (2006). Synthesis, Characterization and Thermal properties of Nine Quaternary Dialkyldiaralkylammonium Chlorides. Journal of Molecular Structure, 787(1-3), 18-30. https://doi.org/10.1016/j.molstruc.2005.10.027

JYU authors or editors

Publication details

All authors or editors: Busi, Sara; Lahtinen, Manu; Kärnä, Minna; Valkonen, Jussi; Kolehmainen, Erkki; Rissanen, Kari

Journal or series: Journal of Molecular Structure

ISSN: 0022-2860

eISSN: 1872-8014

Publication year: 2006

Volume: 787

Issue number: 1-3

Pages range: 18-30

Publisher: Elsevier

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1016/j.molstruc.2005.10.027

Publication open access: Not open

Publication channel open access: 

Additional information: CCDC 261836-261841 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.

Abstract

Nine R2R'2Na+Cl- (R=benzyl, 2-methylbenzyl, 3-methylbenzyl, 4-methylbenzyl, 2-phenylethyl or 3-phenylpropyl; R′=ethyl or methyl) quaternary dialkyldiaralkylammonium chlorides were synthesized by treating dimethylformamide or diethylformamide with non-substituted or substituted arylalkyl (aralkyl) halide in the presence of sodium carbonate. The 1H NMR, 13C NMR spectroscopy, mass spectroscopy and elemental analysis were used to characterize the synthesized products. The crystal structures of six compounds were determined by X-ray single crystal diffraction. Four of the compounds crystallized in monoclinic space groups C2/c and P21/c (or P21/n), one in triclinic space group P−1 and one in orthorhombic space group Pbca. The powder diffraction method was used to compare the structural similarities between the single crystal and the microcrystalline bulk composition. Thermal properties of the new compounds were studied using TG/DTA and DSC methods. The decomposition of the compounds started generally between 130–185 °C and occurred without identifiable cleavages. The synthesized compounds do not seem to be suitable for ionic liquid applications because no melting point was observed for most of them. However, the good thermal stability of these compounds enables their potential use for example as phase-transfer catalysts and electrolytes.

Keywords: thermal analysis

Free keywords: Quaternary dialkyldiaralkylammonium chloride; X-ray single crystal diffraction; X-ray powder diffraction; Thermal analysis

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Ministry reporting: Yes

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