Journal
CROATICA CHEMICA ACTA
Volume 84, Issue 1, Pages 21-24Publisher
CROATIAN CHEMICAL SOC
DOI: 10.5562/cca1714
Keywords
nitrosobenzenes; photothermal reactions; solid-state
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Funding
- Ministry of Science, Education, and Sports of the Republic of Croatia [119-1191342-1334]
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Photothermal reactions of the dimers 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 dimeric nitrosobenzene. Halonitrosobenzenes dimers 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 occurs as a two-dimensional growth through the crystal. (doi: 10.5562/cca1714)
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