N. Li et al., Synthesis of La(III), Y(III) complexes with polyglycol aldehyde-amino acidSchiff base and their high resolution solid state C-13 NMR spectra, SCI CHINA B, 42(6), 1999, pp. 599-604
La(III),Y(III) complexes with diglycol aldehyde bis-arginine (H(2)DAAR) and
tetraglycol aldehyde bis-lysine (H(2)TALY) Schiff bases were synthesized.
They were characterized and formulated as La( H(2)DAAR)(NO3)(3). 6H(2)O and
Y(H(2)TALY) (NO3)(3) . 5H(2)O separately by elemental analyses. The obtain
ed complexes were investigated in detail by high resolution solid state (HR
SS) C-13 NMR using cross polarization, magic angle spinning (CPMAS), and to
tal suppression of sidebands (TOSS) techniques. The results are supported b
y the liquid state 2D-(1) H-C-13 COSY NMR spectra. Some new information abo
ut the splitting peaks of C-13 for -CH=N- soup and alkene carbon bands, etc
. in HRSS C-13 NMR spectra are given.