Evaluation of the binding constants, bound chemical shifts, and equilibrium stoichiometry for the association of lanthanide shift reagents with carbohydrate derivatives

Anita Arduini, Ian M. Armitage, Laurance D. Hall, Alan G. Marshall

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The molecular associations of tris(dipivalomethanato)europium(III) (1) and of tris(2,2-dimethyl-6,6,7,7,8,8,8,-heptafluoro-3,5-octanedionato)europium(III) (2) with six carbohydrate derivatives have been studied. The interactions of 2 in deuterochloroform solution appear to be "normal", i.e., the plot of [sugar concentration] versus [induced chemical-shift change]-1 is linear and can be interpreted in terms of the equilibrium binding constant (KB) and the bound chemical shifts (°B). Similar results are found for 1 in carbon tetrachloride solutions. However, in chloroform solutions, non-linear plots are obtained that cannot be simply interpreted. Possible reasons for this behaviour are given.

Original languageEnglish (US)
Pages (from-to)255-263
Number of pages9
JournalCarbohydrate Research
Volume31
Issue number2
DOIs
StatePublished - Dec 1973

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