Premium
Lanthanide‐induced shifts in the 17 O NMR spectra of 1,6‐anhydro‐β‐ D ‐hexopyranoses. Evidence for tridentate complexing
Author(s) -
Schulte J.,
Lauterwein J.
Publication year - 1992
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260300411
Subject(s) - chemistry , pyranose , ring (chemistry) , europium , nmr spectra database , lanthanide , ether , aqueous solution , paramagnetism , stereochemistry , crystallography , spectral line , ion , medicinal chemistry , organic chemistry , physics , quantum mechanics , astronomy
The complexation of four 1,6‐anhydro‐β‐ D ‐hexopyranoses with europium(III) was studied in aqueous solution by natural abundance 17 O NMR. The paramagnetic ion induced contact shifts of individual hydroxy and ether resonances to low frequency. A clear indication of tridentate complexes was obtained, proving the involvement of the oxygen atom of the anhydro ring in talosan and mannosan and that of the pyranose ring in glucosan.