title: Synthesis of phenylnitroxides bridged by an sp(3)-linkage.
abstract: Silicon- and carbon-bridged phenylnitroxides were synthesized. They exhibited similar ESR profiles independent of the nature of the sp(3) bridge and the substitution mode of the phenylene units. The spectra revealed a quintet signal at room temperature, which became a broad triplet by lowering the temperature. Accumulated ESR measurements at 77 K led to the successful observation of a signal at Deltam(s) = 2, indicating that the triplet state was involved in this system.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan. akunai@hiroshima-u.ac.jp
authors.forename: Joji
authors.initials: J
authors.lastname: Ohshita
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Iida
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Ohta
authors.forename: Kenji
authors.initials: K
authors.lastname: Komaguchi
authors.forename: Masaru
authors.initials: M
authors.lastname: Shiotani
authors.forename: Atsutaka
authors.initials: A
authors.lastname: Kunai