Naslov
Localization of the counterion of the protonated Schiff base of n-butylretinal in solution

Autori
Biliškov, Nikola ; Novak, Jurica ; Petković, Milena ; Zgrablić, Goran ; Baranović, Goran ; Došlić, Nađa

Izvornik
Croatica chemica acta (0011-1643) 84 (2011), 2; 221-231

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
n-butylretinal ; trifluoroacetic acid ; infrared spectroscopy ; hydrogen bonding ; DFT ; anharmonic frequency

Sažetak
The vibrational spectra of the protonated Schiff base of n-butylretinal (nSBR+) in dichloromethane are studied. The trifluoroacetic acid (TFA) is used for the protonation of the Schiff base of n-butylretinal (nSBR). Combining the two-dimensional correlation analysis of the experimental infrared spectra with anharmonic frequency calculations it is shown that two types of ionic aggregates between nSBR+ and the TFA counterion are formed. The study suggests that the interaction between nSBR+ and the TFA counterion may be responsible for the observed lost of photoselectivity in the trans-cis isomerization of the nSBR+ in solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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