Knežević, Anamarija; Medančić, Tina; Milovac, Srđan; Biljan, Ivana; Halasz, Ivan; Vančik, Hrvoj
(2011)
Photothermal Reactions of Nitrosobenzene and Halonitrosobenzenes in Solid-state.
Croatica Chemica Acta, 84
(1).
pp. 21-24.
ISSN 0011-1643
Abstract
Photothermal reactions of nitrosobenzene, m-chloronitrosobenzene, and p-chloronitrosobenzene were studied in solid-state by IR spectroscopy at low temperatures and by X-ray powder diffraction. It was found for the first time that photothermal cycle (photolytic dissociation followed by thermal dimerization) could successively be performed also with Z-configured nitrosobenzene. Halonitrosobenzenes with E-configuration afforded different photo behavior depending on the position of halogen atom on the benzene ring: while m-halonitrosobenzenes do not dissociate under UV irradiation, p-chloronitrosobenzene, as well as previously studied p-bromonitrosobenzene photolyses very efficiently with recovering of the original crystal phase. Kinetics of thermal dimerization was measured in solid-state, and it was found that the reaction phase transformation occur as a two-dimensional growth through the crystal.
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