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Long‐range J ( 15 N, 13 C) and J ( 13 C, 13 C) coupling constants via the metal atom in 13 C NMR spectra of square‐planar Ni(II) complexes of the Schiff base of ( S )‐2‐( N ‐benzylprolyl)aminobenzophenone and 13 C‐1‐, 13 C‐2‐ or 15 N‐labelled glycine
Author(s) -
Jirman Josef,
Nádvorník Milan,
Sopková Jana,
Popkov Alexander
Publication year - 1998
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/(sici)1097-458x(199805)36:5<351::aid-omr252>3.0.co;2-u
Subject(s) - chemistry , carbon 13 nmr , schiff base , synthon , crystallography , metal , stereochemistry , spectral line , atom (system on chip) , organic chemistry , physics , computer science , embedded system , astronomy
Chiral synthons containing either 13 C‐ or 15 N‐labelled glycine were prepared. The 13 C and 15 N NMR spectra of the Ni(II) complex of the Schiff base of ( S )‐2‐( N ‐benzylprolyl)aminobenzophenone and 13 C‐1‐, 13 C‐2‐ or 15 N‐labelled glycine were measured and assigned. The observed splitting of the carbon signals is due to long‐range J ( 13 C, 13 C) and J ( 15 N, 13 C) couplings. The mutual influence of nuclei is transferred via the central Ni(II) atom in square‐planar complexes. © 1998 John Wiley & Sons, Ltd.