H. Keypour, R. Azadbakht, H. Khavasi
Feb 6, 2008
Citations
0
Influential Citations
10
Citations
Journal
Polyhedron
Abstract
Three polyamine ligands of N1-(2-nitrobenzyl)-N1-(2-aminoethyl)ethane-1,2-diamine (L 1 ), N1-(2-nitrobenzyl)-N1-(2-aminoethyl)propane-1,3-diamine (L 2 ) and N1-(2-nitrobenzyl)-N1-(3-aminopropyl)propane-1,3-diamine (L 3 ) were synthesized and their cyclocondensation with 2-[2-(2-formyl phenoxy)ethoxy]benzaldehyde (L 4 ) in the presence of various metal(II) ions was examined. These reactions only in the presence of a stoichiometric amount of cadmium(II) nitrate gave the related cadmium(II) macrocyclic Schiff-base complexes. In all the other cases no cyclic complexes have been obtained and metal(II) polyamines were the only products. The complexes have been studied with IR, 1 H NMR, 13 C NMR, DEPT, COSY, HMQC and microanalysis. The crystal structures of [Cd(NO 3 )(L 5 )(μ-NO 3 )Cd(NO 3 )(L 5 )]0.5Cd(NO 3 ) 4 ( 1 ) and [CdL 5 (NO 3 )(CH 3 OH)]ClO 4 ( 2 ) have been also determined.