title: A compact planar low-energy-gap molecule with a donor-acceptor-donor nature based on a bimetal dithiolene complex.
abstract: We present the first report of a compact, planar and low-energy-gap molecule based on a π-conjugated bimetal system comprising a tetrathiooxalate (tto) skeleton. The observed low HOMO-LUMO energy gap (1.19 eV) is attributed to its donor-acceptor-donor (D-A-D) nature because the skeleton acts as an electron acceptor as well as a tiny and noninnocent bridging moiety.
authors.affiliation: Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan. mhayashi@kuchem.kyoto-u.ac.jp kitagawa@kuchem.kyoto-u.ac.jp.
authors.forename: Mikihiro
authors.initials: M
authors.lastname: Hayashi
authors.affiliation: Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan. mhayashi@kuchem.kyoto-u.ac.jp kitagawa@kuchem.kyoto-u.ac.jp.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Otsubo
authors.affiliation: Institute for the Promotion of Excellence in Higher Education, Kyoto University, Yoshida-Nihonmatsu, Sakyo-ku, Kyoto 606-8501, Japan.
authors.forename: Tatsuhisa
authors.initials: T
authors.lastname: Kato
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
authors.forename: Kunihisa
authors.initials: K
authors.lastname: Sugimoto
authors.affiliation: Department of Nanotechnology for Sustainable Energy, Graduate School of Science and Technology, Kansei Gakuin University, Gakuen, Sanda, Hyogo 669-1337, Japan.
authors.forename: Akihiko
authors.initials: A
authors.lastname: Fujiwara
authors.affiliation: Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan. mhayashi@kuchem.kyoto-u.ac.jp kitagawa@kuchem.kyoto-u.ac.jp and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 7 Goban-cho, Chiyoda-ku, Tokyo 102-0075, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kitagawa