Arun Kumar Sharma

Antifungal Activities and Characterization of Some New Environmentally Safe Cu (II) Surfactants Substituted 2-Amino-6-Methyl Benzothiazole

Result: The studies suggest that the copper (II) ions in soaps may be responsible for the enhancement of the activity against fungi. The evaluation of anti -fungal studies further revealed that fungitoxicity of the complexes also depends on the nature of metal ions. The chelation reduces the polarity of central metal ion mainly because of partial attaining of its positive charge with the donor groups and possible πelectron delocalization over the whole chelate ring. Such chelation increases the lipophilic character of the central atom, which subsequently favors its permeation through the lipoid layer of the cell membrane. Their efficiency increases with their concentration.

Kinetics of isoamyl alcohol and aniline inhibited uncatalysed and Ag (I) catalysed autoxidation of S (IV) in acidic Medium

In this paper we report that isoamyl alcohol and aniline are good inhibitor for SO 2 oxidation in pH range 4.02-5.25 in the presence of Ag(I). Based on the observed results following rate law given and a free radical mechanism has been proposed. d[S(lV)]/dt = (k 1 +k 2 [Ag(I)]) [S(lV)]/1 + B [Organics] Experiments were carried out at 30≤T°C≤40, 4.02≤pH≤5.25, 1×10 −3 mol/cm 3 ≤[S(lV)≤10×10 −3 mol/cm 3 , 5×10 −6 mol/cm 3 ≤[Ag(I)]≤2.5×10 −5 mol/cm 3 , 5×10 −7 mol/cm 3 ≤[Isoamyl alcohol]≤8×10 -3 mol/cm 3 ,5×10 −7 mol/cm 3 ≤[Aniline]≤3×10 -4 mol/cm 3 . Rate constants and order of reaction were calculated and found pseudo- first order in all cases. The effect of pH and temperature were also discussed. The value of apparent energy were found as 45.16 kJ mol -1 and 26.43 kJ mol -1 in the presence of isoamyl alcohol and aniline respectively.