INTERMOLECULAR INTERACTIONS IN TERNARY SOLUTIONS OF A DISUBSTITUTED PYRIDAZINIUM YLID STUDIED WITH KOSOWER SOLVENT EMPIRICAL SCALE

Autor/autori: DANIELA BĂBUȘCĂ, ANDREEA-CELIA BENCHEA and DANA ORTANSA DOROHOI

Abstract: The empirical scales of solvents can be used in order to describe the solvent influence on the electronic absorption spectra. The energy in the maximum of the visible intermolecular charge transfer (ICT) absorption band recorded in ternary solutions of p-cumylpyridazinium -2,4,6-picryl methylid (CPBPM) was correlated to the Kosower’s solvent polarity empirical parameters Z. In binary solvents water + dioxane and water + acetone, the wave number in the maximum of the ICT electronic absorption band of CPBPM increases with the water content increasing. The composition of the first solvation shell was established for both ternary solutions.

Keywords: intramolecular charge transfer (ICT), ternary solutions, solvent empirical parameter Z, p-cumyl-pyridazinium-benzoyl-2,4,6- picryl methylid, first solvation shell

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