A Study To Control Chemical Reactions Using Si:2p Core Ionization: Site-Specific Fragmentation

Autor:	Katsuhiro Yamaguchi, Mai Takemoto, Yusuke Tamenori, Georg Prümper, Isao H. Suzuki, Takuhiro Kakiuchi, Kiyohiko Tabayashi, Kiyoshi Ueda, Shin-ichi Nagaoka, Hironobu Fukuzawa, J. R. Harries, Osamu Takahashi
Rok vydání:	2011
Předmět:	inorganic chemicals Electronegativity Fragmentation (mass spectrometry) Chemical physics Chemistry Ionization Binding energy Molecule Photoionization Physical and Theoretical Chemistry Atomic physics Chemical reaction Dissociation (chemistry)
Zdroj:	The Journal of Physical Chemistry A. 115:8822-8831
ISSN:	1520-5215 1089-5639
Popis:	In an aim to create a "sharp" molecular knife, we have studied site-specific fragmentation caused by Si:2p core photoionization of bridged trihalosilyltrimethylsilyl molecules in the vapor phase. Highly site-specific bond dissociation has been found to occur around the core-ionized Si site in some of the molecules studied. The site specificity in fragmentation and the 2p binding energy difference between the two Si sites depend in similar ways on the intersite bridge and the electronegativities of the included halogen atoms. The present experimental and computational results show that for efficient "cutting" the following conditions for the two atomic sites to be separated by the knife should be satisfied. First, the sites should be located far from each other and connected by a chain of saturated bonds so that intersite electron migration can be reduced. Second, the chemical environments of the atomic sites should be as different as possible.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c774b271f38a7549a473663f209c6254 https://doi.org/10.1021/jp203664r Zobrazit plný text záznamu