Coupled relaxation in AX2 spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances

James Scrivens, F. Heatley

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    A simple treatment of relaxation in AX2 all-proton systems shows that under certain conditions the effective spin-lattice relaxation time of the total A or X signal depends on the method of measurement. The calculations have been confirmed by measurements on 1,3-dinitro-2-chlorobenzene in CDCl 3 and 1,1,2-trichloroethane in CDCl3, (CD 3)2CO and C6D6. The experimental relaxation times, together with nuclear Overhauser enhancements, have been used to determine internuclear distances and rotational correlation times. There is good agreement with values of these parameters obtained from independent sources.

    Original languageEnglish
    Pages (from-to)2164-2170
    Number of pages7
    JournalJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
    Volume72
    DOIs
    Publication statusPublished - 1 Dec 1976

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