Synthesis, mechanism and NMR spectra of lanthanide complexes with an unsymmetrical Schiff base

Citation
Km. Yao et al., Synthesis, mechanism and NMR spectra of lanthanide complexes with an unsymmetrical Schiff base, ACT CHIM S, 58(10), 2000, pp. 1275-1279
Citations number
12
Categorie Soggetti
Chemistry
Journal title
ACTA CHIMICA SINICA
ISSN journal
05677351 → ACNP
Volume
58
Issue
10
Year of publication
2000
Pages
1275 - 1279
Database
ISI
SICI code
0567-7351(2000)58:10<1275:SMANSO>2.0.ZU;2-L
Abstract
Owing to two unsymmetrical -NH2 groups sited on different terminals, L-lysi ne was used as a reactant for synthesizing a novel unsymmetrical Schiff bas e with salicylaldehyde on one side and 2,4-dihydroxy benzaldehyde on the ot her one. Eight new lanthanide complexes with the Ligand above were synthesi zed and characterized by elemental analysis, TG-DTA, molar conductivity, IR and EPR spectra, especially by a 500 MHz NMR spectrometer for 2D C-13-H-1 COSY and their high resolution solid state C-13 NMR spectra. The synthesis method, formation mechanism, coordination sphere of the complexes have been suggested as well. The results obtained may provide a new promising method for synthesizing the similar unsymmetrical Schiff bases and their complexe s.