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In situ photolysis of CD3I in solid orthodeuterium

TitleIn situ photolysis of CD3I in solid orthodeuterium
Publication TypeJournal Article
Year of Publication2007
AuthorsFushitani, M, Miyamoto, Y, Hoshina, H, Momose, T
JournalJOURNAL OF PHYSICAL CHEMISTRY A
Volume111
Pagination12629-12634
Date PublishedDEC 13
ISSN1089-5639
Abstract

Photochemical reactions of molecules in solid orthodeuterium (o-D-2) have been studied by high-resolution infrared spectroscopy and compared with previous results obtained in solid parahydrogen (p-H-2). Ultraviolet photoplysis of CD3I molecules in solid o-D2 yielded CD3 radicals and iodine atoms efficiently, which indicates a small cage effect in solid o-D2, as in the case of solid p-H2. The Fourier transform infrared spectrum of the nu(3) vibrational band of CD3 showed a rotational structure with additional splitting due to crystal field interactions. The magnetic dipole transition (2P(1/2) (<-) P-2(3/2)) of the I atom isolated in solid o-D-2 was observed together with a strong rotational satellite of deuterium molecules through the electron-roton coupling in solid hydrogen. The tunneling reaction between CD3 and D-2 was not observed in a time scale of a few days, which gives the upper limit of the tunneling,reaction rate of 10(-8) s(-1) at 4.2 K.

DOI10.1021/jp0761113