Synthesis of La（Ⅲ）, Y（Ⅲ） complexes with polyglycol aldehyde-amino acid Schiff base and their high resolution solid state 13C NMR spectra

摘要

La（Ⅲ）, Y（Ⅲ） complexes with diglycol aldehyde bis-arginine （H₂DAAR） and tetraglycol aldehyde bislysine （H₂TALY） Schiff bases were synthesized. They were characterized and formulated as La（H₂DAAR） （NO₃）₃·6H₂O and Y （H₂TALY）（NO₃）₃·5H₂O separately by elemental analyses. The obtained complexes were investigated in detail by high resolution solid state （HRSS） 13C NMR using cross polarization, magic angle spinning （CPMAS）, and total suppression of sidebands （TOSS）techniques. The results are supported by the liquid state 2D-1H-13C COSY NMR spectra. Some new information about the splitting peaks of 13C for—CH=N—group and alkene carbon bands, etc. in HRSS 13C NMR spectra are given.