Bis(η6-hexamethylbenzene)(η66-[2n]cyclophane)diruthenium-(11,11) Complexes and Their Two-Electron Reduction to [2n]Cyclophane Derivatives Having Two Cyclohexadienyl Anion Decks Joined by an Extremely Long Carbon-Carbon Bond

Klaus Dieter Plitzko, Brian Rapko, Bernhard Collas, Gabriele Wehrle, Timothy Weakley, David T. Pierce, William E. Geiger, Robert C. Haddon, Virgil Boekelheide

    Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

    Abstract

    series of bis(i;6-hexamethylbenzene)(η66-[2,l]cyclophane)diruthenium(II, II) tetrakis(tetrafluoroborate) complexes, 4, 5, 9, 10, and 11, has been prepared, where the [2n] cyclophanes are [22](l,4)cyclophane, [22](l,3)cyclophane, 4,7,13,16-tetramethyl-[22](1,4)cyclophane, 4,5,7,8-tetramethyl-[22](l,4)cyclophane, and [23](l,3,5)cyclophane, respectively. These 4+ diruthenium complexes undergo two-electron reduction to give 7, 8,12,13, and 14, respectively, in which each of the cyclophane ligands now has two cyclohexadienyl anion decks connected by a new carbon-carbon bond. The assignment of structures to these two-electron reduction products is based on 1H and 13C NMR spectralanalyses, electrochemical studies, and X-rayphotoelectron data. A single-crystal X-ray analysis confirmed the structure assigned to the [22](l,4)cyclophane derivative 7 and showed that the carbon-carbon bond connecting the two cyclohexadienyl anion decks in 7 is 1.96 (3) Å in length, an extremely long carbon-carbon bond. A theoretical analysis of these 2+ diruthenium complexes and their formation is presented.

    Originalspracheenglisch
    Seiten (von - bis)6545-6556
    Seitenumfang12
    FachzeitschriftJournal of the American Chemical Society
    Jahrgang112
    Ausgabenummer18
    DOIs
    PublikationsstatusVeröffentlicht - Jan. 1990

    ASJC Scopus subject areas

    • Katalyse
    • Chemie (insg.)
    • Biochemie
    • Kolloid- und Oberflächenchemie

    Fingerprint

    Untersuchen Sie die Forschungsthemen von „Bis(η6-hexamethylbenzene)(η66-[2n]cyclophane)diruthenium-(11,11) Complexes and Their Two-Electron Reduction to [2n]Cyclophane Derivatives Having Two Cyclohexadienyl Anion Decks Joined by an Extremely Long Carbon-Carbon Bond“. Zusammen bilden sie einen einzigartigen Fingerprint.

    Dieses zitieren