Changing the aromaticity properties of small organic molecules after the ionization

Y. A. Dyakov; S. O. Adamson; G. V. Golubkov; D. P. Gubanova; M. A. Kazaryan; Serine M. Kazaryan; O. S. Andrienko; M. G. Golubkov

doi:10.1117/12.2553662

11 December 2019 Changing the aromaticity properties of small organic molecules after the ionization

Y. A. Dyakov, S. O. Adamson, G. V. Golubkov, D. P. Gubanova, M. A. Kazaryan, Serine M. Kazaryan, O. S. Andrienko, M. G. Golubkov

Author Affiliations +

Proceedings Volume 11322, XIV International Conference on Pulsed Lasers and Laser Applications; 113221Q (2019) https://doi.org/10.1117/12.2553662
Event: XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), 2019, Tomsk, Russian Federation

Abstract

Aromaticity is one of fundamental characteristics of unsaturated organic molecules, which significantly determine chemical properties. By definition, aromatic molecules mast be cyclic, planar, have a complete conjugated π- electrons, and the number of π-electrons mast be 4n+2, where n is any integer number. Aromatic molecules are chemically very stable and have low reactive ability. In the contrary, anti-aromatic molecules, which have conjugated 4n π-electrons, highly unstable, preferably isomerize into aromatic composition, and demonstrate high chemical activity. In this paper, we study properties of typical aromatic and anti-aromatic compounds on the example of pentalene, phenylacetylene, and benzocyclobutadiene, and compare the change of their photochemical properties with changing the electric charge (under the single and double ionization). It was found that aromaticity of the molecules is really changing due to the loss of electrons. Dissociation reactions of pentalene, phenylacetylene and benzocyclobutadiene, as far as their cationic and dicationic forms were investigated. The effect of Coulomb repulsion in doubly ionized molecules also has been observed.

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Y. A. Dyakov, S. O. Adamson, G. V. Golubkov, D. P. Gubanova, M. A. Kazaryan, Serine M. Kazaryan, O. S. Andrienko, and M. G. Golubkov "Changing the aromaticity properties of small organic molecules after the ionization", Proc. SPIE 11322, XIV International Conference on Pulsed Lasers and Laser Applications, 113221Q (11 December 2019); https://doi.org/10.1117/12.2553662

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