Kinetics of Oxidation of Pyridylmethylsulphinylbenzimidazole by Cerium(IV) in an Aqueous Perchloric Acid Medium

Dinesh C. BILEHAL; Raviraj M. KULKARNI; Sharanappa T. NANDIBEWOOR

Makale detayları

Kinetics of Oxidation of Pyridylmethylsulphinylbenzimidazole by Cerium(IV) in an Aqueous Perchloric Acid Medium

Yazarlar:

Dinesh C. BILEHAL | Raviraj M. KULKARNI | Sharanappa T. NANDIBEWOOR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2003 Vol.27 Issue 6, pp.695-702

Belge Tipi:

Makale

Yayın Tarihi:

5/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000729448

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

The kinetics of oxidation of  pyridylmethylsulphinylbenzimidazole [PMSB] by Ce(IV) in an aqueous  perchloric acid medium at a constant ionic strength of 1.50 mol  dm-3 were studied spectrophotometrically.  The reaction showed  first order kinetics with respect to Ce(IV) concentration and an  apparent less than unit order dependence in [PMSB] and a zero order in  [H+].  The initial addition of products has no significant effect on  the rate of the reaction.  A possible mechanism is proposed here.  The  reaction constants involved in the mechanism have been computed.   There is good agreement between the observed and calculated rate  constants under different experimental conditions.  The activation  parameters were calculated and discussed with respect to the slow step  of the proposed mechanism.

 

The kinetics of oxidation of  pyridylmethylsulphinylbenzimidazole [PMSB] by Ce(IV) in an aqueous  perchloric acid medium at a constant ionic strength of 1.50 mol  dm-3 were studied spectrophotometrically.  The reaction showed  first order kinetics with respect to Ce(IV) concentration and an  apparent less than unit order dependence in [PMSB] and a zero order in  [H+].  The initial addition of products has no significant effect on  the rate of the reaction.  A possible mechanism is proposed here.  The  reaction constants involved in the mechanism have been computed.   There is good agreement between the observed and calculated rate  constants under different experimental conditions.  The activation  parameters were calculated and discussed with respect to the slow step  of the proposed mechanism.

Makale detayları

Kinetics of Oxidation of Pyridylmethylsulphinylbenzimidazole by Cerium(IV) in an Aqueous Perchloric Acid Medium

Yazarlar: Dinesh C. BILEHAL | Raviraj M. KULKARNI | Sharanappa T. NANDIBEWOOR

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2003 Vol.27 Issue 6, pp.695-702

Belge Tipi: Makale

Yayın Tarihi: 5/2003

Belge Dili: Türkçe

Document ID (Org No.): 2000729448

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Dinesh C. BILEHAL | Raviraj M. KULKARNI | Sharanappa T. NANDIBEWOOR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2003 Vol.27 Issue 6, pp.695-702

Belge Tipi:

Makale

Yayın Tarihi:

5/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000729448

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527