Chemical reactions in the xenon-acetylene systems irradiated with fast electrons at 16 K: formation of xenon-containing molecules and radicalsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The formation of HXeCCH molecules and HXeCC. radicals resulting from chemical reactions in solid xenon-acetylene systems irradiated with fast electrons was studied by low-temperature IR and EPR spectroscopies. The data obtained confirm the assignment of an absorption band with maximum at 1478 cm(-1) to the H-Xe stretching vibrations in the HXeCCcenter dot radical. Relativistic density functional calculations with inclusion of anharmonic corrections permit a quantitative description of the vibrational spectra of xenon-containing molecules and radicals. Preliminary experimental and computational data on the magnetic resonance parameters of the HXeCCcenter dot radical were obtained. This radical is characterized by large hyperfine coupling constants with magnetic nuclei of the xenon isotopes.