H-1,C-13, AND N-15 NMR-SPECTRA OF NI(II) COMPLEXES OF SCHIFF-BASES OF(S)-2-(N-BENZYLPROLYL)AMINOBENZOPHENONE AND ALPHA-MONOSUBSTITUTED GLYCINE AND DETERMINATION OF CONFIGURATION OF THE COMPLEXES BY 2D NOESY SPECTRA

H-1, C-13 and N-15 NMR spectra have been measured of substituted Ni(II ) complexes of Schiff bases of (S)-2-(N-benzylprolyl)aminobenzophenone and glycine. The absolute configuration at C19 of the substituted gly cine can be determined from 2D NOESY spectra using the NOESY interacti ons with the proton of the second chiral centre of the complex. It is possible to determine the rate of rotation of phenyl group of benzophe none unless its rotation is prevented by ''equatorial'' orientation of dimethylamino group as it is the case with the Ni(II) complex of Schi ff base of (S)-2-(N-benzylprolyl)aminobenzophenone and (S)-alpha-dimet hylaminoglycine.