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Photoinduced Processes in Hydrogen Bonded System: Photodissociation of Imidazole Clusters
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SYSNO ASEP 0341710 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Photoinduced Processes in Hydrogen Bonded System: Photodissociation of Imidazole Clusters Tvůrce(i) Poterya, Viktoriya (UFCH-W) RID, ORCID
Profant, V. (CZ)
Fárník, Michal (UFCH-W) RID, ORCID
Šištík, L. (CZ)
Slavíček, P. (CZ)
Buck, U. (DE)Zdroj.dok. Journal of Physical Chemistry A. - : American Chemical Society - ISSN 1089-5639
Roč. 113, č. 52 (2009), s. 14583-14590Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova scattering analysis ; molecules ; imidazole clusters Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP KAN400400651 GA AV ČR - Akademie věd KJB400400902 GA AV ČR - Akademie věd GA203/09/0422 GA ČR - Grantová agentura ČR CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000273263700050 DOI 10.1021/jp904145q Anotace The photodissociation of imidazole in hydrogen bonded clusters has been studied at photodissociation wavelengths 243 and 193 nm. Imidazole clusters of different mean cluster sizes n approximate to 3 and 6 have been produced in expansions with He and Ar carrier gases, and the mean cluster sizes were determined by mass spectrometric and crossed beam scattering experiments. Simultaneously, the (C3N2H4)(n) clusters were studied by ab initio calculations for n up to 4 molecules, confirming the hydrogen bond N-H center dot center dot center dot N motif in the clusters. The measured H-fragment kinetic energy distribution spectra exhibit a bimodal character similar to the KEDs found for the bare molecule.(1) At 243 run the fast H-atoms originate from the direct dissociation process on the repulsive pi sigma* state, and the slow component results from the dynamics Populating the vibrationally hot ground state via all S-1/S-0 conical intersection. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2011
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