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Abstract
Abstract IR-induced conformer interconversion of 1-propanol was studied in solid Ar, Kr, Xe and N 2 matrices, and was found to involve a CC rotation around the CH 2 CH 2 bond. Ab initio calculations were carried out to aid the interpretation of the results. The photoprocess was found to obey a first-order rate law under unfiltered Nernst-glower irradiation and the rate in different matrix media decreased in the order Xe > Kr > Ar > N 2 . In Xe matrices the rate depended on the deposition temperature, the process being ≈ 3 times faster when the deposition temperature was 15·K than when the sample was deposited at 25 K. A thermal conformer interconversion similar to the photoprocess was found in Xe above 40 K. The efficiency of different spectral regions in initiating the photoprocess was studied using several interference filters.
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