SYNTHESIS OF STAR-SHAPED MACROMOLECULAR SCHIFF BASE COMPLEXES HAVING MELAMINE CORES AND THEIR MAGNETIC AND THERMAL BEHAVIORS
Yükleniyor...
Dosyalar
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
TAYLOR & FRANCIS INC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We aim to study magnetic and thermal behaviors of some melamine cored macromolecular Schiff base complexes. In this context, tripodal ligands were synthesized by reacting melamine with 4-carboxybenzaldehyde or 4-hydroxybenzaldehyde. Then, 16 new trinuclear Fe(III), Cr(III), Mn(III), and Al(III) complexes were synthesized by reacting the ligands [ tris-(4-carboxybenzimino)-1,3,5-triazine) or tris-(4-hydroxybenzimino)-1,3, 5-triazine)] with pentadentate Schiff bases N,N'-bis(1-hydroxy-2-benzyliden)-1,7diamino-4-azaheptane or N,N'-bis(salicylidene) pyridine-2,6-diamine. Later, ligands and complexes were characterized by means of elemental analysis, infrared spectroscopy, H-1 NMR, liquid chromatography-mass spectrometry, thermal analyses, and magnetic susceptibility measurements. Finally, metal ratios of the prepared complexes were determined by using atomic adsorption spectrometry. The complexes were also characterized as distorted octahedral high-spin d(3) (S = 3 x 1/2) Cr(III), high-spin d(5) (S = 5 x 1/2) Fe(III), low-spin d(4) (S = 2 x 1/2) Mn(III), and diamagnetic Al(III) bridged by -OH group of COO- or OH group of phenol.
Açıklama
Anahtar Kelimeler
Melamine, metal complexes, saldeta, salpy, Schiff bases, s-triazine
Kaynak
SYNTHETIC COMMUNICATIONS
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
42
Sayı
7
