NOPR Collection:

Kinetics and mechanism of oxidation of 1,3- dihydroxybenzene by trioxoiodate(V) ion in aqueous perchloric acid medium

2016-07-20T04:39:03Z

Title: Kinetics and mechanism of oxidation of 1,3- dihydroxybenzene by trioxoiodate(V) ion in aqueous perchloric acid medium Authors: Iyun, J F; Ukoha, PO Abstract: The kinetics of oxidation of 1,3-dihydroxybenzene by trioxoiodate(V) ion in aqueous perchloric acid medium has been studied at 0.20 ≤ [H⁺]≤ 2.0 mol dm^-³ under pseudo-first order conditions of an excess [benzenediol] at I= 1.10 mol dm^-³ (NaCIO₄). The reaction obeys the rate expression… Page(s): 180-182

Estimation of the inhibition of flu-virus by benzimidazoles using Wiener index

2016-07-20T05:58:02Z

Title: Estimation of the inhibition of flu-virus by benzimidazoles using Wiener index Authors: Bhangadia, Rashmi; Khadikar, P V; Agrawal, J K Abstract: The role of Wiener index in estimating inhibition of flu-virus by benzimidazoles is described. Excellent correlation is obtained between values of Wiener index and the inhibition constants of some benzimidazoles as indicated by the regression analysis of the data. The approach is illustrated on a selection of benzimidazoles for which the inhibition constants are known. Page(s): 170-172

Kinetics of the complexation of Ni(II) and Co(II) with L-2,6-diaminocaproic acid

2016-07-20T05:53:46Z

Title: Kinetics of the complexation of Ni(II) and Co(II) with L-2,6-diaminocaproic acid Authors: Malhotra, H C; Rattan, Shalu; Singh, Vaishali Abstract: Kinetics of complexation of Ni(II) and Co(II) by L-2.6-diaminocaproic acid has been investigated as a function of pH and temperature at 0.1 M KNO₃ using stopped flow technique. The overall rate constants have been resolved into stepwise rate constants. The activation parameters corresponding to each step have been evaluated. A reaction scheme on the basis of the comprehensive kinetic study consistent with our kinetic data has been proposed. Page(s): 136-140

Structural influence on the stability of some nickel(II) ternary complex chelates

2016-07-20T06:00:21Z

Title: Structural influence on the stability of some nickel(II) ternary complex chelates Authors: Nair, M Sivasankaran; Anbarasi, J Pauline; Arasu, P Thillai; Neelakantan, M A Abstract: Computer based analysis of the pH titration data on the Ni(II)-1,3-diaminopropane (A)-DL-2-aminobutyric acid, DL-3-aminobutyric acid, 4-aminobutyric acid and DL-4-amino-3-hydroxybutyric acid (B) systems show the presence of NiAB and NiABH ternary complexes. Both the pH-metric and electronic spectral measurements show that the 5 and 6 membered Ni(II) ternary complex chelates are markedly stable. The results indicate that the amino group of the amino acid secondary ligand is protonated in the NiABH species. Page(s): 166-169