Regioselective cycloaddition reaction of alkene molecules with the asymmetric dimer on Si(100)c(4 x 2).
We investigated the adsorption states of 2-methylpropene and propene on Si(100)c(4 x 2) using low-temperature scanning tunneling microscopy. We have found that regioselective cycloaddition reactions (di-sigma bond formation) occur between the asymmetric alkene molecules and the asymmetric dimers on Si(100)c(4 x 2). First-principles calculations have elucidated that the regioselectivity is closely related to the structures of precursor species and these precursor species have carbocation-like features. Thus, we conclude that Markovnikov's rule is applicable for the cycloaddition of asymmetric alkene with the asymmetric dimer on Si(100)c(4 x 2).
Oguchi
Kazuhiro
K
Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8581, Japan.
Nagao
Masashi
M
Umeyama
Hirobumi
H
Katayama
Tetsuo
T
Yamashita
Yoshiyuki
Y
Mukai
Kozo
K
Yoshinobu
Jun
J
Akagi
Kazuto
K
Tsuneyuki
Shinji
S