title: Ring-shaped rhenium(I) multinuclear complexes: improved synthesis and photoinduced multielectron accumulation.
abstract: We successfully developed selective synthesis of strongly emissive ring-shaped Re(I) multinuclear complexes (RnP(x)(n+) in Chart 1) with much higher yields compared with the previously reported method. This improved method could also be employed to prepare a novel ring-shaped multinuclear complex composed of structurally different Re(I) units. Each Re unit in RnP(x)(n+) could electrochemically accept one electron, and the multielectron reduced states of RnP(x)(n+) were stable. In the presence of triethanolamine, the ring-shaped tetranuclear and hexanuclear complexes can be photochemically reduced and accumulate 2.9-3.6 and 4.4 electrons in one molecule, respectively.
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology , 2-12-1-NE-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Asatani
authors.forename: Yuki
authors.initials: Y
authors.lastname: Nakagawa
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Funada
authors.forename: Shuhei
authors.initials: S
authors.lastname: Sawa
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Takeda
authors.forename: Tatsuki
authors.initials: T
authors.lastname: Morimoto
authors.forename: Kazuhide
authors.initials: K
authors.lastname: Koike
authors.forename: Osamu
authors.initials: O
authors.lastname: Ishitani