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https://doi.org/10.5562/cca2485

Mechanochemically Induced Anion Exchange in Aminoazobenzene Salts

Iva Džeba ; Rudjer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
Ivan Halasz ; Rudjer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
Kaja Lukić-Glavaš ; Department of Chemistry, Faculty of Science and Mathematics, University of Zagreb, Horvatovac 102A, 10000 Zagreb, Croatia
Hrvoj Vančik orcid id orcid.org/0000-0002-4218-9214 ; Department of Chemistry, Faculty of Science and Mathematics, University of Zagreb, Horvatovac 102A, 10000 Zagreb, Croatia


Puni tekst: engleski pdf 1.878 Kb

str. 407-412

preuzimanja: 842

citiraj


Sažetak

Aminoazobenzene 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.

Ključne riječi

mechanochemistry, solid-state reaction, azobenzene, Avrami equation, piezochromism

Hrčak ID:

131542

URI

https://hrcak.srce.hr/131542

Posjeta: 1.418 *