Naslov
Nitrosobenzene Dimerizations as a Model System for Studying Solid-State Reaction Mechanisms

Autori
Vančik, Hrvoj ; Mežnarić-Šimunić, Vesna ; Meštrović, Ernest ; Halasz, Ivan

Izvornik
Journal of Organic Chemistry (0022-3263) 69 (2004), 14; 4829-4834

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

Ključne riječi
nitrosobenzene dimerisation; solid-state; KJMA; solid-state reaction

Sažetak
Thermal dimerization of nitroso compounds in the solid state was investigated by using para-substituted nitrosobenzenes as model compounds. A mechanism that includes the interplay of topochemical reaction trajectories and phase transfer was proposed on the basis of FT-IR spectroscopic kinetics, time-resolved powder diffraction, and low-temperature X-ray structure determination. From shapes of the kinetic curves analyzed on the basis of the Avrami model, it was found that phase transfer could be triggered by a dimerization reaction of para-substituted nitrosobenzene to azodioxide, which, in turn, can be caused by different packing factors such as disorder in the starting nitroso monomer crystals. Since the represented model can be extended to a broad series of compounds, we propose it as a general method for investigations of solid-state reaction mechanisms.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA