57574-08-0Relevant academic research and scientific papers
Nitrosobenzene dimerizations as a model system for studying solid-state reaction mechanisms
Vancik, Hrvoj,Simunic-Meznaric, Vesna,Mestrovic, Ernest,Halasz, Ivan
, p. 4829 - 4834 (2004)
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.
Crystal disordering and organic solid-state reactions
Varga, Katarina,Volari, Jana,Vanik, Hrvoj
, p. 1434 - 1438 (2015/02/19)
This work is the extension of our preliminary communication about the relationship between the change in the solid-state structure and the chemical reaction in a crystal. The investigation is a case study about the nature of the adiabatic organic solid-st
Mechanochemically induced cross-dimerizations of nitrosobenzenes. Kinetics and solid-state isotope effects
Maganjic, Ana,Solic, Ivan,Milovac, Srd Strok Signan,Halasz, Ivan,Biljan, Ivana,Vancik, Hrvoj
, p. 177 - 182 (2014/03/21)
Mechanical treatment (milling) of crystals of aromatic nitroso dimers (azodioxides) induces their dissociation and cross-dimerizations. The mechanisms of these processes are discussed on the basis of kinetic studies and the solid-state 15 N kinetic isotope effect, which is measured for the first time. By comparison with analogous processes in cocrystals and in melts, it appears that the reactions follow similar mechanism in which the surface deformations play the crucial role. The system can also be used as a model for a more general conceptual study of solid-state reaction mechanisms. Copyright
