Characterization and spectrophotometric studies of new Cu(II), Ni(II), Zn(II) complexes with schiff base derived from 1,2-bis-(o-aminophenoxy)ethane and salicylaldehyde
[ X ]
Tarih
2005
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The thermodynamic parameters of complexes of Cu(II), Ni(n), and Zn(II) cations with 1,2-bis-(o-aminophenoxy)ethane and salicylaldehyde were determined in 60% (v/v) DMF-water, with various ionic strengths (0.07, 0.13, and 0.2 M NaNO3), and at different temperatures (25, 30, 35, and 40 ± 0.1°C) using a spectrophotometric method. Sodium nitrate solution was used to maintain the ionic strengths. The stability constants show an inverse relationship with ionic strengths. The thermodynamic parameters (60% (v/v) DMF-water) (?G°, ?H°, ?S°) based on these formation constants were determined. The values of enthalpy change are negative for all systems. The ligand behaves toward the metal ion as a tetradentate ligand. The acid dissociation constant of ligand was investigated in 60% (v/v) DMF-water and calculated at different temperatures. Copyright © 2005 by Aydin, Ziyadanoğullari, Temel.
Açıklama
Anahtar Kelimeler
Kaynak
Russian Journal of Physical Chemistry A
WoS Q Değeri
Scopus Q Değeri
Q4
Cilt
79
Sayı
SUPPL.1
