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Contribution to protonated tetraethyl p-tert-butylcalix[4]arene tetraacetate: stability and DFT calculated structure

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    0323528 - ÚMCH 2009 RIV AT eng J - Journal Article
    Makrlík, E. - Dybal, Jiří - Vaňura, P.
    Contribution to protonated tetraethyl p-tert-butylcalix[4]arene tetraacetate: stability and DFT calculated structure.
    [Příspěvek k protonaci tetraethyl p-tert-butylcalix[4]aren tetraacetátu: stabilita a struktura vypočítaná pomocí DFT metody.]
    Monatshefte fur Chemie. Roč. 140, č. 1 (2009), s. 29-32. ISSN 0026-9247. E-ISSN 1434-4475
    R&D Projects: GA AV ČR 1ET400500402
    Institutional research plan: CEZ:AV0Z40500505
    Keywords : calixarenes * macrocycles * protonation
    Subject RIV: CD - Macromolecular Chemistry
    Impact factor: 1.312, year: 2009

    From extraction experiments in the two-phase water–nitrobenzene system and γ-activity measurements, the stability constant of protonated tetraethyl p-tert-butylcalix[4]arene tetraacetate in nitrobenzene saturated with water was determined. By using DFT calculations, the most probable structure of the tetraethyl p-tert-butylcalix[4]arene tetraacetate_H3O+ complex species was derived.

    Z extrakčních experimentů ve dvoufázovém systému voda-nitrobenzen měření γ-aktivity byla stanovena konstanta stability protonovaného tetraethyl p-tert-butylcalix[4]aren tetraacetátu v nitrobenzenu saturovaném vodou. Pomocí DFT výpočtů byla odvozena nejpravděpodobnější struktura komplexu tetraethyl p-tert -butylcalix[4]aren tetraacetát_H3O+.
    Permanent Link: http://hdl.handle.net/11104/0005167

     
     
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