title: Regioselective cycloaddition reaction of alkene molecules with the asymmetric dimer on Si(100)c(4 x 2).
abstract: 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).
authors.affiliation: Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8581, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Oguchi
authors.forename: Masashi
authors.initials: M
authors.lastname: Nagao
authors.forename: Hirobumi
authors.initials: H
authors.lastname: Umeyama
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Katayama
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Kozo
authors.initials: K
authors.lastname: Mukai
authors.forename: Jun
authors.initials: J
authors.lastname: Yoshinobu
authors.forename: Kazuto
authors.initials: K
authors.lastname: Akagi
authors.forename: Shinji
authors.initials: S
authors.lastname: Tsuneyuki