Pratap College

Amalner, India

Pratap College

Amalner, India
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Heterocyclic base adducts of cobalt (II) complexes have been synthesized by the reaction of cobalt (II) chloride with 5-chloro-2-hydroxy acetophenone N(4) methyl thiosemicarbazone in presence of heterocyclic base like pyridine (py), 2, 2'-bipyridine (bipy), 1, 10-phenanthroline (Phen), α/β-picoline. The synthesized thiosemcarbazone has been characterized by 13C, 1H NMR as well as IR, electronic spectra. The magnetic and spectroscopic study show octahedral geometry for six coordinate, square planner geometry for the four coordinate and a distorted square pyramidal for five coordinate complexes. The thiosemicarbazone and its cobalt (II) complexes exhibit growth inhibitory activity against Pseudomonas Putida, Escherichia Coli, Aspergillus Niger and Candida Albicans. Thiosemicarbazone and its cobalt (II) complexes have also been found antioxidant.


Heterocyclic base adducts of copper (II) complexes have been synthesized by the reaction of copper (II) chloride with 5-chloro-2-hydroxy acetophenone N(4) methyl thiosemicarbazone in presence of heterocyclic base like pyridine (py), 2, 2'-bipyridine (bipy), 1, 10-phenanthroline (Phen), α/β-picoline. Thiosemcarbazone has been characterized by 13C, 1H NMR as well as IR, electronic spectra. The magnetic and spectroscopic data indicate a square planner geometry for the four coordinate and a distorted square pyramidal for five coordinate complexes. The thiosemicarbazone and its copper (II) complexes show growth inhibitory activity against Pseudomonas Putida, Escherichia Coli, Aspergillus Niger and Candida Albicans. Thiosemicarbazone and its copper (II) complexes have been found antioxidant.


We have synthesized heterocyclic base adducts [pyridine (py), 2, 2'-bipyridine (bipy), 1, 10-phenanthroline (Phen), α/ß-picoline] of Nickel (II) complexes by the reaction of Nickel (II) chloride with 5-chloro-2-hydroxy acetophenone N(4) methyl thiosemicarbazone in presence of heterocyclic base. Ligand was characterized by 13C, 1H NMR as well as IR, electronic spectra. The synthesized adducts were characterized by IR, ESI-MS, UV-visible, magnetic measurement, molar conductivity, TGA and DSC. The magnetic and spectroscopic data indicate a square planner geometry for the four coordinate and a distorted square pyramidal for five coordinate complexes. The Nickel (II) bipy and Nickel (II) ß-pico adducts show higher antioxidant activity.


Patil H.M.,Science and Commerce College | Sawant D.K.,Science and Commerce College | Bhavsar D.S.,Pratap College | Girase K.D.,Svss Arts And Science College
Journal of Thermal Analysis and Calorimetry | Year: 2012

The growth of neodymium tartrate crystals was achieved in silica gel by single diffusion method. Optimum conditions were established for the growth of good quality crystals. Fourier transform infrared (FT-IR) spectroscopic study indicates the presence of water molecules and tartrate ligands and suggests that tartrate ions are doubly ionised. The thermal behaviour of the material was studied using thermogravimetry (TG), differential thermal analysis (DTA), derivative thermogravimetry (DTG) and differential scanning calorimetry (DSC). Thermogravimetric analysis support the suggested chemical formula of the grown crystal to be Nd2(C4H4O6) 3·7H2O, and the presence of seven water molecules as water of hydration. It is shown that the material is thermally stable up 45 °C beyond which it decomposes through many stages till the formation of neodymium oxide (Nd2O3) at 995 °C. The decomposition pattern is reported to be typical of a hydrated metal tartrate. © Akadémiai Kiadó, Budapest, Hungary 2011.


Sonar A.N.,Pratap College | Pawar N.S.,Pratap College
Journal of Chemical and Pharmaceutical Research | Year: 2011

The determination of stability constant of Rifampicin complexes with rare earths metal ions in temperature range 303-318 K at constant ionic strength 0.1M.in 50% dioxane-water mixture by adopting pH metric technique been studied. The thermodynamic parameters (ΔG,ΔH and ΔS) were calculated from values of stability constant at different temperatures. The formations of metal complexes were found to be spontaneous and exothermic nature.


Patil V.S.,University of Mumbai | Patil N.S.,Pratap College | Timol M.G.,Veer Narmad South Gujarat University
International Journal of Non-Linear Mechanics | Year: 2015

A similarity analysis of three-dimensional boundary layer equations of a class of non-Newtonian fluid in which the stress, an arbitrary function of rates of strain, is studied. It is shown that under any group of transformation, for an arbitrary stress function, not all non-Newtonian fluids possess a similarity solution for the flow past a wedge inclined at arbitrary angle except Ostwald-de-Waele power-law fluid. Further it is observed, for non-Newtonian fluids of any model only 90° of wedge flow leads to similarity solutions. Our results contain a correction to some flaws in Pakdemirli's [14] (1994) paper on similarity analysis of boundary layer equations of a class of non-Newtonian fluids. © 2014 Elsevier Ltd. All rights reserved.


Kale M.S.,Pratap College | Toda Y.R.,Pratap College | Bhole M.P.,Pratap College | Bhavsar D.S.,Pratap College
Electronic Materials Letters | Year: 2014

Nano structured thin films having different thickness of CdS were deposited by thermal evaporation techniques, onto precleaned amorphous glass substrate at room temperature. The structural properties of films were evaluated by XRD, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The quantitative analysis was done by Energy Dispersive Analysis for x-ray to determine atomic % of the material used. The optical band gaps of the films were measured by using optical absorption spectra. Thermo Electrical parameters such as Fermi energy (0.098 to 0.006 eV), absorption coefficient (1.04 to 1.16) have been estimated. The x-ray diffraction analysis confirms that films are polycrystalline in nature having orthorhombic structure with a preferential orientation along the (040) plane. The degree of such a preferred orientation was found to increase with film thickness. The lattice parameters (a = 14.315, b = 14.568 and c = 14.074 Å) size (D) were calculated and found to be 242.9 nm. Unit cell volume is found to be 2935. SEM investigation confirms that films were uniformly deposited over the surface and particles were granular in nature. The particle size was determined by using SEM and found to be 6.88-10.86 nm. It is found that CdS is direct band gap material having value of 2.42 eV. © 2014 The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht.


Dalal P.V.,Pratap College | Saraf K.B.,Pratap College
Bulletin of Materials Science | Year: 2011

Single crystals of strontium oxalate have been grown by using strontium chloride and oxalic acid in agar.agar gel media at ambient temperature. Different methods for growing crystals were adopted. The optimum conditions were employed in each method by varying concentration of gel and reactants, and gel setting time etc. Transparent prismatic bi-pyramidal platy-shaped and spherulite crystals were obtained in various methods. The grown crystals were characterized with the help of FT.IR studies and monoclinic system of crystals were supported with lattice parameters a = 9·67628 A, b = 6·7175 A, c = 8·6812 A, β = 113·566., and V = 521·84 A3 calculated from X-ray diffractogram. © Indian Academy of Sciences.


The mixed ligand complexes of the type [M(L 1)(L 2)]Cl 2 (where M= Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) and L 1 = acetophenone semicarbazone, L 2= cyclohexanone semicarbazone) have been synthesized by the reactions of metal chlorides with two different semicarbazone compounds in 1:1:1 molar ratios. The resulting complexes have been characterized on the basis of elemental analysis, magnetic measurement, IR and electronic spectra, conductivity measurement. The metal complexes shows ratio 1:1:1 with metal, ligand L 1and ligand L 2.The ligands acts as bidentate ligands and are bonded through oxygen and nitrogen to metal ion. The two co-ordination positions are occupied by two water molecules. The complexes have octahedral structure.


Sonar A.N.,Commerce and Science College | Pawar N.S.,Pratap College
Rasayan Journal of Chemistry | Year: 2010

Refractive index, molar refractivities and molar polarizability constant of heterocyclic compounds such as 2-Thiazol-4-yl-1H benzimidazole, 5-nitro-2-Thiazol-4-yl-1H benzimidazole and 2- (2-Thiazol-4-yl)-1H benzimidazole-1-yl-acetic acid have been studied in Ethanol, Methanol, Acetone, DMF, and THF media at 303 K ± 0.1°C temperature and different concentrations (0. 625x10-3 to10.0x 10-3M). The values of molar refraction (Rm) and molar polarizability (α) constant are found to be decreased with decreasing concentration of solute in solvent. Viscosity coefficient (A, B) evaluate by using john-dole equation. These parameters throw the light on the solute-solvent interaction and solute-solute interaction.

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