Synthesis and characterization of copper(II), nickel(II) and cobalt(II) complexes with azo-linked Schiff base ligands
Küçük Resim Yok
Tarih
2005
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Diazo compounds were prepared by coupling of benzenediazonium chloride ions with 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid mono sodium salt under alkaline conditions, and new Schiff bases H2L and H2L 1 were then obtained by the condensation of 4-amino-5-hydroxy-6-(2,5- dicholorophenylazo)-2,7-naphthalene disulfonic acid disodium salt and 4-amino-5-hydroxy-6-(2-nitrophenylazo)-2,7-naphthalenedisulfonic acid disodium salt with o-vanillin. New Cu(II), Ni(II) and Co(II) complexes of the Schiff base ligands were also prepared and characterized by IR, UV-Vis, 1H and 13C NMR (APT and DEPT) and atomic absorption spectroscopy, elemental analyses, thermogravimetric analysis, conductivity and magnetic measurements. In DMSO-d6 solutions, it was found that the azo-linked Schiff base ligands are in equilibrium with their corresponding and strongly prevailing hydrazone tautomers. The results suggested that the condensation of the azo-derivative compounds and o-vanillin in 1:1 molar ratio produces mononuclear Schiff base ligands with an ONO donor set. Copyrignt © 2005 Taylor & Francis, Inc.
Açıklama
Anahtar Kelimeler
Azo-linked Schiff base, Diazo compound, Keto-enamine tautomerism, Ketohydrazone tautomerism
Kaynak
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
35
Sayı
3
