Počet záznamů: 1

Geminal 2J(29Si-O-29Si) Couplings in Oligosiloxanes and Their Relation to Direct 1J(29Si-13C) Couplings

  1. 1.
    0363027 - UCHP-M 2012 RIV GB eng J - Článek v odborném periodiku
    Kurfürst, Milan - Blechta, Vratislav - Schraml, Jan
    Geminal 2J(29Si-O-29Si) Couplings in Oligosiloxanes and Their Relation to Direct 1J(29Si-13C) Couplings.
    Magnetic Resonance in Chemistry. Roč. 49, č. 8 (2011), s. 492-501 ISSN 0749-1581
    Grant CEP: GA ČR GP203/08/P412; GA AV ČR IAA400720706
    Výzkumný záměr: CEZ:AV0Z40720504
    Klíčová slova: 29Si NMR * 13C NMR * 29Si couplings
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 1.437, rok: 2011

    Relationships are found between 79 measured 2J(29Si-O-29Si) couplings in oligosiloxanes and 29Si chemical shifts, number of oxygenous substituents and 1J(29Si-13C) couplings. In selected compounds the signs of the 2J couplings are positive, it is argued that all the 2J(29Si-O-29Si) couplings are positive. Density functional calculations failed to reproduce the signs and trends in the couplings.
    Trvalý link: http://hdl.handle.net/11104/0199153