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Mono- ve Di- Sübstitüe Anilinlerin Protonasyon Sabitlerine Sübstitüent Etkisinin İncelenmesi

Investigation of Substituent Effect on Protonation Constants of Mono- and Di- Substituted Anilines

Journal Name:

  • Gazi Eğitim Fakültesi Dergisi

Publication Year:

  • 2001

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this research, stoichiometric protonation constants (logβ) of aniline and some of the mono- and disubstituted anilines were determined by potentiometric titration water solvent systems. The titrations were performed using modified glass-electrode at 25 0 C, 0,1 M (NaClO4) ionic strength and under inert nitrogen atmosphere. The formation curves of the anilines j-(-log[H]) were obtained by the means of the titration data and then protonation constants were determined by Bjerrum’s half integer method and also computer program called PKAS . Based on the values of the protonation constants obtained substituent effect were discussed.
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Abstract (Original Language): 
Bu çalışmada, anilin ve bazımono- ve disübstitüe anilinlerin stokiyometrik protonasyon sabitleri (logβ) su çözücü sistemlerinde potansiyometrik titrasyon metodu ile tayin edilmiştir. Titrasyonlar modifiye edilmişkombine cam pH elektrotu kullanılarak 25 0 C’da, 0,1 M (NaClO4) iyonik kuvvette ve inert azot atmosferinde yapılmıştır. Titrasyon verilerinden yararlanarak mono- ve di- sübstitüe anilinlerin j-(-log[H]) oluşum eğrileri elde edilmişve bu eğrilerden Bjerrum’un buçuklu metodu ve PKAS bilgisayar programıkullanılarak protonasyon sabitleri elde edilmiştir. Tayin edilen protonasyon sabitlerinin değerlerini kullanarak sübstitüent etkisi tartışılmıştır
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  • 1
111-120
  • Turkish

REFERENCES

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