Site-specific fragmentation caused by core-level photoionization in F(3)SiCH(2)CH(2)Si(CH(3))(3) vapor: comparison between Si:1s and 2p photoionizations by means of photoelectron-photoion-photoion triple-coincidence spectroscopy.
Site-specific fragmentation caused by Si:1s and 2p core-level photoionizations in F(3)SiCH(2)CH(2)Si(CH(3))(3) vapor was studied by energy-selected-photoelectron photoion-photoion triple-coincidence spectroscopy. The difference between the chemical shifts of the two Si sites is larger for the 1s ionization than for the 2p (2s) ionization. The fragmentation caused by the Si:1s ionization is more violent than that caused by the Si:2p ionization. The ions and ion pairs showing high site specificity for the Si:1s ionization belong to small fragments compared to those in the Si:2p ionization. Criteria for high site-specificity in fragmentation are discussed in conjunction with the present results.
Nagaoka
Shin-ichi
S
Department of Chemistry, Faculty of Science, Ehime University, Matsuyama, Japan. nagaoka@ehimegw.dpc.ehime-u.ac.jp
Takemoto
Mai
M
Prümper
Georg
G
Fukuzawa
Hironobu
H
Tamenori
Yusuke
Y
Suzuki
Isao H
IH
Ueda
Kiyoshi
K