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Anti-Kasha nitrogen photoelimination from diazoalkanes


Alešković, Marija; Piteša, Tomislav; Becker, Kristin; Bohne, Cornelia; Basarić, Nikola; Došlić, Nađa
Anti-Kasha nitrogen photoelimination from diazoalkanes // 17th Central European Symposium on Theoretical Chemistry, Book of Abstracts
Stadtschlaining, Austrija, 2019. str. 86-86 (poster, podatak o recenziji nije dostupan, sažetak, znanstveni)


Naslov
Anti-Kasha nitrogen photoelimination from diazoalkanes

Autori
Alešković, Marija ; Piteša, Tomislav ; Becker, Kristin ; Bohne, Cornelia ; Basarić, Nikola ; Došlić, Nađa

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
17th Central European Symposium on Theoretical Chemistry, Book of Abstracts / - , 2019, 86-86

Skup
17th Central European Symposium on Theoretical Chemistry

Mjesto i datum
Stadtschlaining, Austrija, 9.-12.9.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
Photochemistry, nonadiabatic dynamics, surface hopping dynamics, anti-Kasha fluorescence

Sažetak
Nitrogen elimination from diazoalkanes is a well known reaction, which can easilly beinduced both thermally and photochemically. In this work we present a photochemical study of diazo compound 1. Experimentally, it was observed to have pronounced anti-Kasha photochemistry, as it gives greater yield of nitrogen eliminationafter UV excitation than after VIS excitation. Also, an anti-Kasha fluorescence was observed. Nonadiabatic surface hopping dynamics was used to elucidate the photochemical behaviour of 1. To simulatie VIS and UV excitations, the dynamics was initiated in corresponding energy windows, i.e. in the S1 and S2/S3 states respectively. In both typesof simulations the S1/S0 CI was easily reached by elongation of the CN bond. We identified the anti-Kasha pathway of nitrogen elimination in around 30 % of trajectories initiated by UV excitation. The source of anti-Kasha fluorescence was also identified in around 4 % of UV-initiated trajectories and confirmed by excited-state optimization.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Ustanove
Institut "Ruđer Bošković", Zagreb