کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1238330 1495286 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectral, electrical conductivity and biological activity properties of some new azopyrimidine derivatives and their complexes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Spectral, electrical conductivity and biological activity properties of some new azopyrimidine derivatives and their complexes
چکیده انگلیسی
The electronic absorption spectra of 5-(o-substituted phenylazo)-6-amino-2-thiouracils and 6-(o-substituted phenylazo)-5-aminouracils containing different substituents are studied at different pH's. The dissociation constants are evaluated and discussed. Phenomenon of tautomerism is more supported by 1H NMR and 13C NMR spectra. The electrical conductivity of some ligands and their CoII, NiII and CuII complexes in the temperature range 293-150 K favoured their semiconducting properties where the metal ion forms a bridge to facilitate the flow of the current. The biological activity of some ligands and their complexes are tested against a number of Gram-positive and Gram-negative bacteria. The results showed that some of the compounds have a well considerable activity against some of the organisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 67, Issues 3–4, July 2007, Pages 669-677
نویسندگان
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