Naslov
Understanding mechanical reactions using the classical Hammett model

Autori
Vugrin, Leonarda ; Carta, Maria ; Francesco, Delogu ; Halasz, Ivan

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

Izvornik
7th Faculty of Science PhD Student Symposium : Book of Abstracts / - Zagreb : Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu, 2023, 53-53

ISBN
978-953-6076-01-7

Skup
7th Faculty of Science PhD Student Symposium Book of Abstracts

Mjesto i datum
Zagreb, Hrvatska, 21.04.2023. - 22.04.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
ball milling ; solvent-free ; Hammett model ; Schiff base

Sažetak
The ability to predict mechanochemical reaction pathways and kinetics based on the mechanical energy input as well as the characteristics of the targeted chemical reactivity is required for efficient experimental planning. While we have recently established linearity between energy input and reaction progress in a purely mechanochemically activated reaction, we have here tested the application of the classical solution- based Hammett correlation in mechanochemical Schiff base formation from p-nitrobenzaldehyde and differently substituted anilines. Tracking chemical transformations in real time using in situ Raman spectroscopy enables the examination of the connection between chemical, rheological and kinetic factors. It was shown that the properties of reaction material such as hardness and density affect the elasticity of the collisions in a ball mill and the different course of the reaction. The linear dependence of the reaction probability and the Hammett constants derived from the solution indicates that the current models borrowed from physical-organic chemistry can be exploited to further the understanding of milling reactions.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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