✦ LIBER ✦

Long-range J(15N,13C) and J(13C,13C) coupling constants via the metal atom in 13C NMR spectra of square-planar Ni(II) complexes of the Schiff base of (S)-2-(N-benzylprolyl)aminobenzophenone and 13C-1-, 13C-2- or 15N-labelled glycine

✍ Scribed by Josef Jirman; Milan Nádvorník; Jana Sopková; Alexander Popkov

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 211 KB
Volume: 36
Category: Article
ISSN: 0749-1581
DOI: 10.1002/(sici)1097-458x(199805)36:5<351::aid-omr252>3.0.co;2-u

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✦ Synopsis

Chiral synthons containing either 13Cor 15N-labelled glycine were prepared. The 13C and 15N NMR spectra of the Ni(II) complex of the Schi † base of (S)-2-(N-benzylprolyl)aminobenzophenone and 13C-1-, 13C-2or 15N-labelled glycine were measured and assigned. The observed splitting of the carbon signals is due to long-range J(13C,13C) and J(15N,13C) couplings. The mutual inÑuence of nuclei is transferred via the central Ni(II) atom in square-planar complexes.