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Metal vs. Ligand Reduction in Complexes of Dipyridol[3,2-a:2'', 3''-c]phenayine and Related Ligands with [(C5Me5)CIM]+, M = Rh or Ir: Evidence for Potential Rather Than Orbital Control in the Reductive Cleavage of the Metal-Chloride Bond

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F04%3A00101045" target="_blank" >RIV/61388955:_____/04:00101045 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Metal vs. Ligand Reduction in Complexes of Dipyridol[3,2-a:2'', 3''-c]phenayine and Related Ligands with [(C5Me5)CIM]+, M = Rh or Ir: Evidence for Potential Rather Than Orbital Control in the Reductive Cleavage of the Metal-Chloride Bond

  • Original language description

    Complexes between the chlorometal(III) cations [(C5Me5)ClM]+, M = Rh or Ir, and the 1,10-phenanthroline-derived .alpha.-diimine (NN) ligands dipyrido[3,2-a;2'',3''-c]phenazine (dppz), 1,4,7,10-tetraazaphenanthrene (tap), or 1,10-phenanthroline-5,6-dione(pdo) were investigated by cyclic voltammetry, EPR and UV-Vis-NIR spectroelectrochemistry with respect to either ligand-based or metal-centered (and then chloride-dissociative) reduction. Two low-lying unoccupied MOs are present in each of these three NNligands, however, their different energies and interface properties are responsible for different results. Metal-centered chloride-releasing reduction was observed for complexes of the DNA-intercalation ligands dppz and tap to yield compounds [(NN)(C5Me5)M] in a two electron step. The separation of .alpha.-diimine centered optical orbitals and phenazine-based redox orbitals is apparent from the EPR and UV-Vis-NIR spectroelectrochemistry of [(dppz)(C5Me5)M]o/.-/2-.

  • Czech name

    Redukce kov vs. ligand v komplexech dipyridol[3,2-a:2 '', 3''-c]phenazinu a příbuzných ligandů s [(C5Me5)CIM ] +, M = Rh nebo Ir: Důkaz vlivu spíše potenciálu než orbitalu na redukční štěpení vazby kov-chlorid

  • Czech description

    Komplexy mezi chlorometalickými(III) catioty [(C5Me5)ClM]+, M = Rh nebo Ir, a z 1,10-phenanthrolinu odvozenými .alfa.-diimine (N^N ) ligandy dipyrido[3,2-a;2'',3''-c]phenazinem (dppz), 1,4,7,10-tetraazaphenanthrenem (tap), nebo 1,1 0-phenanthroline-5,6-dione (pdo) byly vyšetřovány cyklickou voltametrií, EPR a UV-VIS-NIR spektroelektrochemií s ohledem na redukci lokalizivanou buď na ligandu nebo kovovém centru (a pak chlorid-disociativní). Dva nízkoležící neobsazené molekulové orbitaly jsou přítomny v každém z těchto tří N ^N ligandů, nicméně, jejich různé energie a vazebné vlastnosti jsou zodpovědné za různé výsledky. U komplexů DNA-interkakačními ligandy dppz a tap byla pozorována na kovu soustředěná redukce s disociací chloridu, jež poskytuje [(N^N)(C5Me5)M ] v dvouelektronovém kroku. Oddělení optických orbitalů soustředěných na .alpha.-diiminu a redox orbitalů na phenazinové části je zřejmé z EPR a UV-VIS-NIR spektroelektrochemie komplexů [(dppz)(C5Me5)M]o/.-/2-.

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

    2004

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Inorganic Chemistry

  • ISSN

    0020-1669

  • e-ISSN

  • Volume of the periodical

    43

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    9

  • Pages from-to

    1530-1538

  • UT code for WoS article

  • EID of the result in the Scopus database