Naslov
Mechanochemically induced anion exchange in aminoazobenzene salts
(Mechanochemically induced anion exchange in minoazobenzene salts)

Autori
Džeba, Iva ; Halasz, Ivan ; Lukić-Glavaš, Kaja ; Vančik, Hrvoj

Izvornik
Croatica chemica acta (0011-1643) 87 (2014), 4; 407-412

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

Ključne riječi
mechanochemistry ; solid-state reaction ; azobenzene ; Avrami equation ; piezochromism

Sažetak
Minoazobenzene sulfate salt reacts with the crystals of KBr in solid-state under high pressure yield-ing corresponding bromide salt. The reactant and product differ also in the position of protonation, amino group, and azo group, respectively. Since protonation of azo-group destroys the coplanarity of two benzene rings and diminishes -conjugation, the product differs from the reactant also in color, from orange to violet. Hence, the reaction is the example of the piezochromic effect. This solid-state process is studied by kinetic measurements, and the structures of the compounds were analyzed by X-ray chrystallography.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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