Abstract

Pyridinium-acetyl-benzoyl-methylid is a cycloimmonium ylid studied here from structural and spectral point of view. Quantum mechanical analysis offers information about the most stable spatial structure, the electro-optical properties in the ground electronic state as well as the QSAR parameters of PABM. The solvatochromic study of the visible absorption band of PABM was made in order to establish the electro-optical features of the ylid in the excited electronic state and also to approximate the contribution of different types of intermolecular interactions in solutions with different solvents. The ternary solutions of PABM were used to estimate the difference between the interaction energies in molecular pairs of the types: ylid-inactive solvent and ylid-active solvent from interaction point of view.

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