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Liquid Crystals and their Application
Russian Journal

Zhidkie kristally i ikh prakticheskoe ispol'zovanie

Жидкие кристаллы и их практическое использование

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Rus Eng


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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2015, 15 (4), 48—55.
DOI: 10.18083/LCAppl.2015.4.48

Complexation of 1-Alkyl-4-Aza-1-Azoniabicyclo[2.2.2]Octane Bromides with Transition Metal Cations in Acetone

E. P. Zhil'tsova1, M. R. Ibatullina1,2, S. S. Lukashenko1, T. N. Pashirova1, M. P. Kutyreva2, L. Ya. Zakharova1

Author affiliations
1A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of RAS,
8 Arbuzov St., Kazan, 420088, Russia
2Kazan (Volga Region) Federal University,
18 Kremlyovskaya St., Kazan, 420008, Russia

The complexation of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide and 1-ethyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide with nitrate Co (II) and bromide Cu (II) in acetone has been investigated by spectrophotometry (Ostromyslenskii – Job method and molar ratio method). The characteristics of the complexes (stoichiometry and stability constant) and the complexation process (the Gibbs free energy change) were determined. Their dependence on the nature of the metal and the ligand structure (its hydrophobicity) was established.

Keywords: alkylated derivatives of DABCO, transition metals, complexation, complex stability constant

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