Title |
BIO-MEDICINAL STUDIES OF SOME NEW TRIORGANOBISMUTH (V) COMPOUNDS |
| Int J Chem Res Vol:4 Iss:1 (2012-05-31) : 118-121 |
Authors |
RAVI KANT, TRIPATHI D.M., AMRESH G. |
Published on |
31 May 2012 Pages : 118-121 Article Id : BIA0000156 Views : 1098 Downloads : 1471 |
DOI | http://dx.doi.org/10.9735/0975-3699.4.1.118-121 |
|
Abstract |
Full Text |
PDF | XML |
PubMed XML |
CNKI |
Cited By |
Open Access |
Some new triorganobismuth (V) amide were synthesized by earlier reported method and fully characterized by their elemental and I.R. spectral analysis along with their antimicrobial activity against different pathogenic bacterial and fungal strains and in-vitro antitumor activity against human breast and mammary cancer cell line. It was found that compounds have great potential as antitumor and antimicrobial agents.
|
|
Title |
OXIDATION OF CROTONIC ACID WITH CE (IV) PERCHLORATES |
| Int J Chem Res Vol:4 Iss:1 (2012-05-31) : 122-125 |
Authors |
TEWARI I.C., RAJESH SHUKLA, SUSHMA RANI |
Published on |
31 May 2012 Pages : 122-125 Article Id : BIA0000157 Views : 1120 Downloads : 1244 |
DOI | http://dx.doi.org/10.9735/0975-3699.4.1.122-125 |
|
Abstract |
Full Text |
PDF | XML |
PubMed XML |
CNKI |
Cited By |
Open Access |
The present manuscript deals the kinetics and mechanism of the reaction between crotonic acid and ceric perchlorates. The order
of the reaction with respect to Ce (IV) is unity but the rate is dependent on the initial concentration of the Ce (IV). The spectrophotometric
investigation has been also carried out which negatived the intermediate complex formation. The main reaction species of Ce (IV) involved
in rate determining step was the hydrated uncomplexed ceric ion which at higher initial concentration gets dimerises.
|
|
Title |
STUDY OF KINETICS OF THE OXIDATION OF LEVULINIC ACID BY Ce (IV)-PERCHLORATES IN PERCHLORIC ACID |
| Int J Chem Res Vol:4 Iss:1 (2012-05-31) : 126-129 |
Authors |
TEWARI I.C., RAJESH SHUKLA, SUSHMA RANI |
Published on |
31 May 2012 Pages : 126-129 Article Id : BIA0000158 Views : 1128 Downloads : 1473 |
DOI | http://dx.doi.org/10.9735/0975-3699.4.1.126-129 |
|
Abstract |
Full Text |
PDF | XML |
PubMed XML |
CNKI |
Cited By |
Open Access |
The present manuscript deals the kinetics of the oxidation of levulinic acid by Ce (IV) perchlorates in perchloric acid. The reaction
follows a first order rate dependence on the Ce (IV) concentration but the value of k1 decreases with the increasing concentration of Ce (IV).
Evidence for complex formation between Ce (IV) and levulinic acid was obtained from the Michaelies-Menten reciprocal plots. This was
further confirmed spectrophotometrically where the absorption intensity in the wave length region 212 mμ-216 mμ, was intensified as compared
to absorption spectra of Ce(IV)perchlorate under identical conditions with an increase in [H+], the rate increases and a plot between
[HClO4 ] -1 and k1-1 is a straight line intercepting the ordinate. The reaction shows a positive salt effect. A suitable mechanism has been
postulated and the values of activation parameters are reported.
|