Počet záznamů: 1

Correlation of the formation constant of ferrocene-cyclodextrin complexes with dielectric properties of the aqueous DMSO solution

  1. 1.
    0361505 - UFCH-W 2012 RIV CH eng J - Článek v odborném periodiku
    Kolivoška, Viliam - Gál, Miroslav - Hromadová, Magdaléna - Valášek, Michal - Pospíšil, Lubomír
    Correlation of the formation constant of ferrocene-cyclodextrin complexes with dielectric properties of the aqueous DMSO solution.
    Journal of Organometallic Chemistry. Roč. 696, č. 7 (2011), s. 1404-1408 ISSN 0022-328X
    Grant CEP: GA ČR GP203/09/P502; GA ČR GA203/09/1607; GA MŠk OC 140; GA MŠk LC510
    Výzkumný záměr: CEZ:AV0Z40400503; CEZ:AV0Z40550506
    Klíčová slova: cycklodextrin * ferrocene * cyclic voltammetry
    Kód oboru RIV: CG - Elektrochemie
    Impakt faktor: 2.384, rok: 2011

    The host-guest interactions between ferrocene and alpha-cyclodextrin (alpha-CD), beta-cyclodextrin (beta-CD), Heptakis(2,6-di-O-methyl)-beta-cyclodextrin (2-beta-CD) and Heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin (3-beta-CD) in aqueous DMSO solution were studied by means of cyclic voltammetry. The complex formation constant K was determined in the solutions of various values of the relative permittivity epsilon(r) of DMSO: water mixture. The dependence of K on dielectric properties of the mixtures 3r for all type of cyclodextrin utilized was found. Furthermore, the dependence of K on the cyclodextrin type was also found. As an additional feature the different dependencies of the Gibbs energy of the complex formation, Delta G(CF)(0) for different CDs on the volume ratio of DMSO, phi(DMSO) were observed.
    Trvalý link: http://hdl.handle.net/11104/0198806