Complex of ytterbium ethylenediaminetetraacetate as combined NMR paramagnetic probe for in situ control of temperature and pH in aqueous media

Sergey P. Babailov, Eugeny N. Zapolotsky

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    Abstract

    The paper reports variations in LIS for [Yb(H2O)n(EDTA)] and [Yb2(EDTA)3]6− complexes as a result of variation in pD and temperature. This is the first detection of kinetically stable complexes of the yttrium subgroup with stoichiometric ratio of 2:3. The experimental paramagnetic lanthanide-induced chemical shift values of these compounds are well fitted by linear dependence on 1/T at different pH values. The [Yb(H2O)n(EDTA)] complex can be considered as one of the most promising combined NMR spectroscopic probe to determine temperature and pH in aqueous media.

    Original languageEnglish
    Pages (from-to)323-326
    Number of pages4
    JournalPolyhedron
    Volume139
    DOIs
    Publication statusPublished - 8 Jan 2018

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    Keywords

    • Aqueous solutions
    • Complexes of lanthanides
    • Lanthanide-induced shifts in NMR spectra
    • Temperature and pH sensitive NMR lanthanide paramagnetic probe
    • Ytterbium

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Inorganic Chemistry
    • Materials Chemistry

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