Conductimetric and Potentiometric Investigation of Effects of Solvents and Titrant on Formation of Homoconjugates

Esin CANEL; Mustafa TAŞTEKİN; Orhan ATAKOL; Esma KILIÇ

Makale detayları

Conductimetric and Potentiometric Investigation of Effects of Solvents and Titrant on Formation of Homoconjugates

Yazarlar:

Esin CANEL | Mustafa TAŞTEKİN | Orhan ATAKOL | Esma KILIÇ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2003 Vol.27 Issue 1, pp.77-84

Belge Tipi:

Makale

Yayın Tarihi:

12/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000729683

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

Trichloro-, tribromo- and trifluoro- acetic acids were both  conductimetrically and potentiometrically titrated in acetonitrile and  2-propanol media.  The titrations were carried out at 25°C under  nitrogen atmosphere and titrants used were the solutions of triethyl,  di-n-butyl and n-butyl amines prepared in the same solvents.  Whether  these acids gave a homoconjugation reaction during titration was  investigated by the use of conductimetric and potentiometric titration  curves.  In acetonitrile media trichloro- and tribromo-acetic acids  decomposed to give chloroform and carbon dioxide, and bromoform and  carbon dioxide respectively.  It was observed that the acid  concentration and the type of titrant used had no effect upon the  decomposition reaction.  However, trifluoroacetic acid was seen to  give a homoconjugation reaction when three titrants mentioned above  were employed.  When all three acids were conductimetrically titrated  with three different titrants in 2-propanol medium, in order to  elucidate the role of the medium upon the homoconjugation and  decomposition reactions, it was observed that they gave stoichoimetric  end--points and the tendency to give homoconjugation decreased in this  medium.  The potentiometric titration results also support the  conductimetric titration data.  It was observed that the strength of  the acid is important in the homoconjugation reaction.

 

Trichloro-, tribromo- and trifluoro- acetic acids were both  conductimetrically and potentiometrically titrated in acetonitrile and  2-propanol media.  The titrations were carried out at 25°C under  nitrogen atmosphere and titrants used were the solutions of triethyl,  di-n-butyl and n-butyl amines prepared in the same solvents.  Whether  these acids gave a homoconjugation reaction during titration was  investigated by the use of conductimetric and potentiometric titration  curves.  In acetonitrile media trichloro- and tribromo-acetic acids  decomposed to give chloroform and carbon dioxide, and bromoform and  carbon dioxide respectively.  It was observed that the acid  concentration and the type of titrant used had no effect upon the  decomposition reaction.  However, trifluoroacetic acid was seen to  give a homoconjugation reaction when three titrants mentioned above  were employed.  When all three acids were conductimetrically titrated  with three different titrants in 2-propanol medium, in order to  elucidate the role of the medium upon the homoconjugation and  decomposition reactions, it was observed that they gave stoichoimetric  end--points and the tendency to give homoconjugation decreased in this  medium.  The potentiometric titration results also support the  conductimetric titration data.  It was observed that the strength of  the acid is important in the homoconjugation reaction.

Makale detayları

Conductimetric and Potentiometric Investigation of Effects of Solvents and Titrant on Formation of Homoconjugates

Yazarlar: Esin CANEL | Mustafa TAŞTEKİN | Orhan ATAKOL | Esma KILIÇ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2003 Vol.27 Issue 1, pp.77-84

Belge Tipi: Makale

Yayın Tarihi: 12/2002

Belge Dili: Türkçe

Document ID (Org No.): 2000729683

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Esin CANEL | Mustafa TAŞTEKİN | Orhan ATAKOL | Esma KILIÇ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2003 Vol.27 Issue 1, pp.77-84

Belge Tipi:

Makale

Yayın Tarihi:

12/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000729683

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527