New cyclic and acyclic Schiff bases have been prepared by condensation reaction of 5,17-diamino-25,26,27,28-tetrapropoxycalix [4] arene (L(B)) with 2,6-diformyl-4-chlorophenol and 1,5-diamino-3-aza(methyl)pentane or with 2,3-dihydroxybenzaldehyde. The related complexes containing d- or f-metal ions have been obtained by reaction of the preformed ligands with the appropriate metal salt or by a template macrocyclic synthesis. The hetero-polynuclear complexes have been synthesized by a step by step procedure. Condensation of 5,17-diformyl-25,27-dipropoxycalix [4]arene (L(A)) with tris(2-aminoethyl) amine affords a macrobicyclic ligand containing three calixarene units. The ligands and the related complexes have been characterized by elemental analyses, IR or NMR spectroscopy and mass spectrometry. The stoicheiometries of the complexes have been assigned by SEM and EDX investigations.
Novel Schiff base compounds containing calix[4]arene / S., Tamburini; P., Tomasin; P. A., Vigato; Casnati, Alessandro; L., Domiano. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 254:(1997), pp. 209-212. [10.1016/S0020-1693(96)05529-6]
Novel Schiff base compounds containing calix[4]arene
CASNATI, Alessandro;
1997-01-01
Abstract
New cyclic and acyclic Schiff bases have been prepared by condensation reaction of 5,17-diamino-25,26,27,28-tetrapropoxycalix [4] arene (L(B)) with 2,6-diformyl-4-chlorophenol and 1,5-diamino-3-aza(methyl)pentane or with 2,3-dihydroxybenzaldehyde. The related complexes containing d- or f-metal ions have been obtained by reaction of the preformed ligands with the appropriate metal salt or by a template macrocyclic synthesis. The hetero-polynuclear complexes have been synthesized by a step by step procedure. Condensation of 5,17-diformyl-25,27-dipropoxycalix [4]arene (L(A)) with tris(2-aminoethyl) amine affords a macrobicyclic ligand containing three calixarene units. The ligands and the related complexes have been characterized by elemental analyses, IR or NMR spectroscopy and mass spectrometry. The stoicheiometries of the complexes have been assigned by SEM and EDX investigations.| File | Dimensione | Formato | |
|---|---|---|---|
|
Schiff-base abstract.bmp
non disponibili
Tipologia:
Abstract
Licenza:
Creative commons
Dimensione
10.32 MB
Formato
BMP
|
10.32 MB | BMP | Visualizza/Apri Richiedi una copia |
|
Schiff-base.pdf
non disponibili
Tipologia:
Documento in Post-print
Licenza:
Creative commons
Dimensione
309.68 kB
Formato
Adobe PDF
|
309.68 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
