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Valence-State Analysis through Spectroelectrochemistry in a Series of Quinonoid-Bridged Diruthenium Complexes [(acac)(2)Ru(mu-L)Ru(acac)(2)](n) (n =+2,+1, 0,-1,-2)

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F08%3A00321030" target="_blank" >RIV/61388955:_____/08:00321030 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Valence-State Analysis through Spectroelectrochemistry in a Series of Quinonoid-Bridged Diruthenium Complexes [(acac)(2)Ru(mu-L)Ru(acac)(2)](n) (n =+2,+1, 0,-1,-2)

  • Original language description

    The quinonoid ligand-bridged diruthenium compounds [(acac)2Ru(.mu.-L)Ru(acac)2 (acac- = acetylacetonato = 2,4-pentanedionato; L2 =2,5-dioxido-1,4-benzoquinone, 1; 3,6-dichloro-2,5-dioxido-1,4-benzoquinone, 2; 5,8-dioxido-1,4-naphthoquinone, 3; 2,3-dichloro-5,8-dioxido-1,4-naphthoquinone, 4; 1,5-dioxido-9,10-anthraquinone, 5; and 1,5-diimido-9,10-anthraquinone, 6) were prepared and characterized analytically. The simultaneous presence of highly redox-active quinonoid-bridging ligands and of two rutheniumcenters capable of adopting the oxidation states +2, +3, and +4 creates a large variety of possible oxidation state combinations. Accordingly, the complexes 1?6 exhibit two reversible one-electron oxidation steps and at least two reversible reduction processes. While the first reduction steps are assigned to largely ligand-centered processes, the oxidation appears to involve metal?ligand delocalized molecular orbitals with variable degree of mixing.

  • Czech name

    Valence-State Analysis through Spectroelectrochemistry in a Series of Quinonoid-Bridged Diruthenium Complexes [(acac)2Ru(.mu.-L)Ru(acac)2]n (n= +2, +1, 0, -1, -2)

  • Czech description

    Dirutheniové komplexy s chinonoidním můstkem [(acac)2Ru(.mu.-L)Ru(acac)2 (acac- = acetylacetonato = 2,4-pentanedionato; L2 =2,5-dioxido-1,4-benzochinon, 1; 3,6-dichloro-2,5-dioxido-1,4-benzochinon, 2; 5,8-dioxido-1,4-naftochinon, 3; 2,3-dichloro-5,8-dioxido-1,4-naftochiinon, 4; 1,5-dioxido-9,10-antrachinon, 5; a 1,5-diimido-9,10-antrachinon, 6 ) byly připraveny a charakterizovány analyticky. Současná přítomnost vysoce redox-aktivních chinonoidních můstkových ligandů a dvou rutheniových center schopnýchpřijmout oxidační stavy +2, +3, a +4 vytváří velkou rozmanitost možných kombinací oxidačních stavů. V důsledku toho komplexy 1-6 vykazují dva reverzibilní jednoelektronové oxidační kroky a přinejmenším dva reverzibilní redukční procesy. Zatímco první redukční stupně byly přiřazeny procesům lokalizovaným převážně na ligandy, oxidace zahrnuje molekulární orbitaly delokalizované mezi kovy a ligandy, s proměnnou mírou smíšení.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CG - Electrochemistry

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Chemistry - A European Journal

  • ISSN

    0947-6539

  • e-ISSN

  • Volume of the periodical

    14

  • Issue of the periodical within the volume

    34

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    13

  • Pages from-to

  • UT code for WoS article

    000261555200036

  • EID of the result in the Scopus database