The low-lying triplet excited state of n-sulfinylanilines explains heir reactivity and inclination to cycloaddition across N–S=O ROUP

Minaev, B. F. and Minaeva, V. A. and Panchenko, O. O. and Bondarchuk, S. V. (2020) The low-lying triplet excited state of n-sulfinylanilines explains heir reactivity and inclination to cycloaddition across N–S=O ROUP. Voprosy khimii i khimicheskoi tekhnologii (№ 6). pp. 106-114.

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Abstract

Density functional theory calculations for p-Br-N-sulfinylaniline and m-nitro-Nsulfinylaniline in the ground singlet (S0 ) and triplet (T1 ) excited states are presented and analyzed in terms of their specific physicochemical properties. As all aromatic Nsulfinylamines, these compounds are rather unstable being sensitive to moist air and we assign this instability to the thermally allowed S0 T1 excitation induced by internal magnetic forces. Our calculations indicate that the T1–S0 energy gap in these molecules is unexpectedly low and spin-orbit coupling matrix element between these states is relatively high, being allowed by the orbital symmetry selection rules. We also apply the exchange mechanism of spin-catalysis concept in order to explain the prone of N-sulfinylamines to the DielsAlder cycloaddition with dienes.

Item Type: Article
Uncontrolled Keywords: spin-catalysis ; cycloaddition ; cycloaddition ; sulfinylamines ; dft ; singlet-triplet energy gap
Subjects: Хімічні науки
Divisions: Навчально-науковий інститут природничих та аграрних наук
Depositing User: Наукова Бібліотека
Date Deposited: 04 Mar 2021 13:03
Last Modified: 04 Mar 2021 13:03
URI: http://eprints.cdu.edu.ua/id/eprint/4329

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