Kotaro Yamauchi

Publications (3)0 Total impact

• Article: Isomers and carbon-13 hyperfine structures of metal-encapsulated fullerenes M@C82 (M = Sc, Y, and La)

  Shinzo Suzuki, Satoshi Kawata, Haruo Shiromaru, Kotaro Yamauchi, Koichi Kikuchi, Tatsuhisa Kato, Yohji Achiba
  04/2002;
• Article: Electronic absorption spectra of the radical anions and cations of fullerenes: C60 and C70

  Tatsuhisa Kato, Takeshi Kodama, Tadamasa Shida, Takashi Nakagawa, Yoko Matsui, Shinzo Suzuki, Haruo Shiromaru, Kotaro Yamauchi, Yohji Achiba
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  ABSTRACT: The electronic absorption spectra of the radical ions in the title are observed in γ-irradiated glassy polyatomic matrices at 77 K. The spectral features of all the radical ions are consistent with the available information in the literature which includes photoelectron and resonance Raman spectra of C60 and C70. In addition, the observed spectra compare favorably with the results of CNDO/S calculations.
  Chemical Physics Letters.
• Article: ESR and optical studies of the radical anion of C60

  Tatsuhisa Kato, Takeshi Kodama, Munetaka Oyama, Satoshi Okazaki, Tadamasa Shida, Takashi Nakagawa, Yoko Matsui, Shinzo Suzuki, Haruo Shiromaru, Kotaro Yamauchi, Yohji Achiba
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  ABSTRACT: The ESR and the electronic adsorption spectrum of the radical anion of C60 produced by electrolysis were measured at room temperatures and at 77 K. A singlet ESR spectrum with g=1.999 appeared only at 77 K while the electronic absorption spectrum was observed both at room temperatures and at 77 K. The small value of the g factor was associated with the residual orbital angular momentum. The irregular vibrational structure of the electronic absorption of the radical anion in the frozen matrix band was suggested as being due to the Jahn-Teller distortion.
  Chemical Physics Letters.