ISSN:
1573-1111
Keywords:
lanthanide(III) complexes
;
Schiff-base
;
oxaazamacrocycle
;
ion selectivity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The interaction of lanthanide(III) ions with two N3O3-macrocycles, L1 and L2, derived from 2,6-bis(2-formylphenoxymethyl)pyridine and 1,2-diaminoethane has been investigated. Schiff-base macrocyclic lanthanide(III) complexes LnL1(NO3)3 · xH2O (Ln = Nd, Sm, Eu or Lu) have been prepared by direct reaction of L1 and the appropriate hydrated lanthanide nitrate. The direct reaction between the diamine macrocycle L2 and the hydrated lanthanide(III) nitrates yields complexes LnL2(NO3)3· H2O only for Ln = Dy or Lu. The reduction of the Schiff-base macrocycle decreases the complexation capacity of the ligand towards the Ln(III) ions. The complexes have been characterised by elemental analysis, molar conductivity data, FAB mass spectrometry, IR and, in the case of the lutetium complexes, 1H NMR spectroscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008182512371
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