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Structural elucidation of bipyridine helicate complexes and their precursors by NMR spectroscopy
Author(s) -
Annunziata Rita,
Benaglia Maurizio,
Famulari Antonino,
Raimondi Laura
Publication year - 2001
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.828
Subject(s) - chemistry , bipyridine , nuclear magnetic resonance spectroscopy , stereochemistry , proton nmr , crystallography , crystal structure
1 H and 13 C NMR assignments of bipyridine helicate complexes and their precursor ligands were achieved using gradient‐based homo‐ and hetero‐correlated 2D experiments. The observed trends in 1 H and 13 C chemical shift variations [Δδ(H) and Δδ(C)], on passing from the ligands to the complexes, are accounted for on the basis of MO evaluation of atomic charges. Copyright © 2001 John Wiley & Sons, Ltd.