Vol. 7 & Issue 3 ; Section A : Chemical Sciences

Date : May 2017 to July 2017

 

The relation between van der Waals parameters a, b and a simpler calculation formula of molecule potential energy

Zhuxin Wu

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 501-509.

[DOI: https://doi.org/10.24214/jcbps.A.7.3.50109]

  • Abstract

    In this paper, the writer derived a formula  T= 8a/27Rb from the isotherms of van der Waals formula which could be used in van der Waals formula.From the formula of a and b, the formula of the depth of molecular potential well was deduced Φ0 = 27/8 . k T which showed the depth of molecular potential well was only relative and proportional to the temperature. By analysis on this formula the writer deduced a relation V =  - 27/8 kT (r0/R)6 that was an easier formula to calculate molecule potential energy between two same molecules. By considering this formula and London dispersion formula, the author did a test on the correctness of formula V =  - 27/8 kT (r0/R)6, and the test showed the formula was correct and accurate which also showed the correctness of other new formulas in this paper.

Nanomaterial and their applications in Environmental sample preparation techniques: A Review

Abiyot Kelecha Geletu

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 510-524.

[DOI: https:/doi.org/10.24214/jcbps.A.7.3.51024]

  • Abstract

    In this paper the use of both carbon based and metallic nano particles in separation and extraction of environmental samples, method of synthesis and modification is reviewed. Their use in preparation procedures for sample clean-up and preconcentration of analytes is a topic of growing interest in analytical chemistry. The properties of nanomaterials have been extensively exploited in different separation and enrichment techniques (e.g., SPE, microextraction and filtration). Nanomaterials can be used in different formats as single particles, aggregates, or powders or dispersed in a matrix. The aim of this paper is to present the recent application of nanomaterials in sample preparation procedure for sample clean-up and preconcentration of the analytes, which allow simplification of the method and the possibility of treating small amounts of sample.

Synthesis of novel pyridine linked to benzimidazole via sulphide and their Antioxident and Antimicrobial activity

Sathish Byrappa1, K.R.Mahendra, B. Ashwini, Puttananjaiah Shilpa, K. M. Lokanatha Rai

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 525-535.

[DOI: https: //doi.org/10.24214/jcbps.A.7.3.52535]

  • Abstract

    In this communication, we synthesized a series of eleven novel 2-(2-(1H-benzo[d]imidazol-2-ylthio) ethyl)-3-methyl-4 H-pyrido [1,2-a] pyrimidin-4-one analogues, characterized using various spectroscopic techniques and evaluated for their antioxidant and antimicrobial activities. Among the tested compounds, compound 8d and 9 shows good antioxidant activity and compound 8d shows excellent antibacterial activity.

Homolytic phosphorylation of unsaturated compounds as a method for the synthesis of organo-Phosphoric

Elégbede A. Félix, Atchade Bardieu and Elégbede N. Bernadin

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 536-546.

[DOI: https://doi.org/10.24214/jcbps.A.7.3.53646]

  • Abstract

    In the structure of olefin, the introduction of halogen, of alkoxy groups acyl and other, influence the process of homolytic addition and performance in the phosphonates. The movement of the double bond toward the center of the molecule of olefin (composed non- saturated) makes it difficulté. The Addition (2-hexene, 2- heptene compared to 1-hexene and 1-heptene) and the cyclohexene is less reactive. The addition of the phosphite in diethyl cyclohexene initiated by UV rays is characterized significantly by the effect of induction. The introduction of the halogen atom (chlorine, fluorine, etc.) increases the reactivity of the olefin. As well as the vinyl chloride reacts with the phosphite of dimethyl to 145-155°C in the presence of peroxides of the alkyl to give β-chloroethyl dimethyl phosphonate with the yield
    85%.

    Resume : La structure de l’oléfine, l’introduction d’halogène, de groupes alcoxyacyle et autres, influencent le déroulement du processus d’addition homolytique et le rendement en phosphonates. Le mouvement de la double liaison vers le centre de la molécule d’oléfine (composé non- saturé) rend difficile l’addition (2-hexène, 2- heptène comparés à 1-hexène et 1-heptène). Le cyclohexène est moins réactif. L’addition du phosphite de diéthyle au cyclohexène initié par les rayons UV est caractérisée de façon significative par l’effet d’induction. L’introduction de l’atome d’halogène (chlore, fluor, etc.) augmente la réactivité de l’oléfine. Ainsi le chlorure de vinyle réagit avec le phosphite de diméthyle à 145-155°C en présence des peroxydes d’alkyle pour donner β-Chloroéthyle diméthyle phosphonate de rendement 85%.

Potential Biological Activities, Molecular Docking and Synthesis of Novel Ag+, Ni +2 and Fe+3 Complexes with Schiff base N'-(1-(4-((3,4-dihydroquinolin-1(2H)-yl)sulfonyl) phenyl) ethylidene)-3-oxo-3H-benzo[f]chromene-2-carbohydrazide

Mahmoud Sayed Bashandy, Sami Abdullah Al-Harbi, Amr M. Nassar, Shimaa Mohamed Abd El-Gilil

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 547-562.

[DOI:10.24214/jcbps.A.7.3.54762]

  • Abstract

    Ag+, Ni+2 and Fe+3 complexes with Schiff base N'-(1-(4-((3,4-dihydroquinolin-1(2H)-yl)sulfonyl)phenyl)ethylidene)-3-oxo-3H-benzo-[f]chromene-2-carbohydrazide (HL) have been synthesized. The structure of the new complexes is established using spectroscopic, elemental and thermal analysis. The data reveals that the geometry of the complexes are dihedral for Silver complex, square planar for Nickel complex and octahedral for Iron complex. The ligand molecule is found to be acts as bidentate with complex 1 through carbonyl oxygen and enol form oxygen and tridentate with complexes 2 and 3 via carbonyl oxygen, enol form oxygen and azomethine nitrogen. The structures of the newly synthesized compounds were confirmed by elemental analysis, IR, UV, TGA and Ms spectral data. The in vitro antimicrobial activities of ligand and their complexes were tested. Ni (II) complex showed a significant activity against all microorganisms. Fe (III) complex exhibits a significant activity against Mycobacterium tuberculosis. In addition, in vitro cytotoxic activities of all the synthesized compounds were evaluated on human liver carcinoma HEPG2 and human prostate carcinoma PC3 cell lines. HL, ligand exhibited a significant inhibition against HEPG2 with IC50 value 178.21 μM. while, Ag(I) and Ni(II) complexes exhibited a significant inhibition against PC3 cell line with IC50 values 4.39 μM., and 10.68 μM., respectively compared to MTX as a reference drug. Docking studies involving MOE (Molecular Operating Environment) was studied to find the potential binding affinities between the ligand and the DHFR enzyme. HL and Ni (II) complex showed more interaction with DHFR which lead to inhibit this enzyme.

Colorimetric determination of vitamin C using Fe(II)-5-Chloro-7-iodo-8-hydroxyquinoline complex

Ashwani Kumar, Brij Mohan and Pankaj Bhatia

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 563-571.

[DOI: 10.24214/jcbps.A.7.3.56371.]

  • Abstract

    An extractive spectrophotometric procedure based on the complexation of reduced Iron (II) with 5-Chloro-7-iodo-8-hydroxyquinoline (CIHQ) for the estimation of micro amounts of vitamin C is described. The resulting complex is extracted into chloroform to give a reddish brown extract which shows an absorption band at 485 nm. Linear relationship between absorbance and concentration of ascorbic acid is observed up to 0.8 μg ml-1. Interference studies of different substances including sugars, vitamins and amino acids, metal ions and organic acids were carried out. The utility of the method was tested by analysing some of the marketed products of vitamin C.

Chemical composition, Elements and Photochemical contents of Trigonella foenum-graecum L. (Seeds)

Bader Omer Burham

JCBPS; Section A; May 2017 – July 2017, Vol. 7, No. 3; 572-578,

[DOI: 10.24214/jcbps.A.7.3.57278]

  • Abstract

    The objective of this study is to investigate the chemical composition, minerals and photochemical contents of Fenugreek seeds which obtained from Albaha, KSA (Panda market). The analysis of chemical composition of fenugreek shows that the percentage of dry matter , Ash, protein, oils ,fiber and total carbohydrates were 89.77, 0.28, 29.7, 7.13, 6.28 and 46.32,respectively. Minerals contents were Ca (43.93mg/100g), Fe (11.17mg/100g) and P (698.21mg/100g).The contents of photochemical ( phytic acid, tannin and total polyphones) were 152.91, 1.32 and 452.12mg/100g, respectively.

Electrochemical Self Assembled Monolayer based sensor for Sodium ion using 4-aminobenzo-15-crown-5 as ionophore

Urvasini Singh and Sunita Kumbhat

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 579-585.

[https: 10.24214/jcbps.A.7.3.57985].

  • Abstract

    A novel sodium ion (Na+) selective sensor based on gold surface functionalized by immobilization of ionophore, 4-aminobenzo-15-crown-5 (4-AB-15-C-5) through a self-assembled monolayer has been developed. Host-guest complexation of lithium ions and ionophore was confirmed by conductance studies, UV-Vis and FTIR Spectroscopic measurements. The binding of sodium ion to the ionophore at sensor surface was monitored using a redox probe Ru(NH3)63+ / Ru(NH3)64+as ‘reporter ion’ employing cyclic voltammetry and differential pulse voltammetry. The sensor was found to be responsive 1mM Na+.

Antioxidant activity of 3-substituted-4-hydoxycoumarin derivatives

Ahmed El Abbouyi, Layachi Khamliche, Nawal Benzidia, Nadia Ouasfi,Soukaina El Maliki, Najoie Filali-Ansari, Said El Khyari

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 586-599.

[DOI: 10.24214/jcbps.A.7.3.58699]

 

  • Abstract

    The aim of this work was to evaluate the relationship between the structure and the radical scavenging activity (RSA) of synthesized 3-substitued-4-hydroxycoumarins, namely 3-acteyl-4-hydroxycoumarin, 3-ethoxycarbonyl-4-hydroxycoumarin and 3-acetylphenylhydrazone-4-hydroxycoumarin, taking 4-hydroxy coumarin and BHT as the reference compounds. The RSA was evaluated by using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical test. All compounds tested showed significant dose-dependent effect (P<0.05). The highest scavenging activity was observed with 3-acetylphenylhydrazone-4-hydroxycoumarin (99%) which is similar to that of BHT (96%) but higher than that of 4-hydroxycoumarin (48%). In the same conditions, 3-acteyl-4-hydroxycoumarin and 3-ethoxycarbonyl-4-hydroxycoumarin exhibited moderate activity 25% and 5% respectively. It is likely that the nature of the substituent in position 3 plays an essential role in scavenging activity potential possibly by stabilization of the free radical generated through resonance mechanism in one hand and electron-attracting mesomeric effect on the other hand.

Extractive spectrophotometric determination of Zirconium with 6-chloro-3-hydroxy-2-phenyl-4H-chromen-4-one as an analytical reagent

Monika Chawaria and Ashwani kumar

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 600-604.

[DOI: 10.24214/jcbps.A.7.3.6004.]

  • Abstract

    An extractive spectrophotometric method is developed for the trace determination of zirconium. A yellow colored complex is formed by 6-chloro-3-hydroxy-2-phenyl-4H-chromen-4-one (CHPC) with zirconium (IV) which is quantitatively extracted into dichloromethane. The method obeys Beer’s law in the range 0.0-5.0 μg Zr mL-1, having molar absorptivity, specific absorptivity and Sandell’s sensitivity of 5.930 ×104 L mol-1 cm-1 , 0.650 mL g-1 cm -1 and 0.00153 μg of Zr cm-2 respectively at 415 nm. The method is free from the interferences of Be(II),La(III), Dy(III), Cr(VI), Ba(II), Se(IV), Re(VII), Mn(II), Bi(III) Co(III), Ce(IV), Hg(II), Ca(II), Sr(II), Cd(II)and many other analytically important elements. The method has good reproducibility and can be satisfactorily applied to determination of zirconium in various samples of different complexity.

Synthesis and Pharmacological Evaluation of Some New Schiff Bases of Succinimide

OmranFhid, Massud A. S. Anwair, Talal H. Zeglam, Shaban E.A.Saad, Areej.J.AL Aswed, Zahra, M.AL Aswed

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 605-613.

[DOI:10.24214/jcbps.A.7.3.60513]

  • Abstract

    A series of Schiff bases were prepared by reaction of equimolar of 4-(N-succinimidyl) phenyl hydrazide3 and substituted aromatic aldehydes (Benzylaldehyde, Chlorbenzaldehyde, 3-Nitrobenzylaldehyde, 4-Nitrobenzylaldehyde, Salcyladehyde and acetaldehyde) for determining the analgesic and anti-bacterial activities. The structures of the new synthesized compounds were confirmed by physical and spectral analysis. All the synthesized compounds were evaluated in vivo for analgesic and in vitro for antibacterial activities by using standard experimental models. The results indicated that the new synthesized compounds exhibit good biological activities.

Oxidation of Some Unsaturated Acids by Imidazolium Dichromate: A Kinetics and Mechanistic Study

Sonali Saraf, Rajesh Kumar, U. Songara, A. Choudhary, and Vinita Sharma

JCBPS; Section A; May 2017 – July 2017, Vol. 7, No. 3; 614-625.

[DOI:10.24214/jcbps.A.7.3.61425]

  • Abstract

    The oxidation of maleic, fumaric, crotonic and cinnamic acids by imidazolium dichromate (IDC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding epoxide. The reaction is of first order with respect to IDC and the acid. Due to non-aqueous nature of the solvents toluene-p-sulphonic acid (TsOH) was used the source of hydrogen ions. The reaction is catalysed by hydrogen ions. The hydrogen-ion dependence has the form: kobs = a + b [H+]. The oxidation of these acids was studied in nineteen different organic solvents. The solvent effect was analyzed by Kamlet’s and Swain’s multiparametric equations. Solvent effect indicated the importance of the cation-solvating power of the solvent. A mechanism involving a three-centre transition state has been postulated.

Determination of blend level of biodiesel in petroleum diesel by 1H NMR spectroscopy

K.Rajagopal and Adeel Ahmad

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 626-634.

[DOI: 10.24214/jcbps.A.7.3.62634]

  • Abstract

    Often biodiesel is used as blend component with Petroleum Diesel (PD). As the blend percent of biodiesel affects the performance of engine due to its poor cold flow properties and since, 1HNMR is nondestructive and rapid spectroscopic technique, in the present work, the blend levels of Cotton Seed Oil Methyl Esters (CSOME) biodiesel and Palm Stearin Methyl Esters (PSME) biodiesel in PD were estimated using 1H NMR spectroscopy. The values obtained were in good agreement with the known values with only maximum of 10 % deviation.

An absorption spectral analysis of 4f-4f transition and symmetry study of Nd(III) with Fumaric acid and Maleic acid in the presence and absence of Ca2+and Zn2+ in aqueous and non-aqueous solvent

Th. Samrat Singh and Th. David Singh

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 635-349.

[DOI: 10.24214/jcbps.A.7.3.63549]

  • Abstract

    Absorption spectra analysis for the complexation of Lanthanide Nd(III) with maleic acid and fumaric acid are carried out in a different organic solvent, viz methanol (CH3OH), dimethyl formamide (DMF) and dioxane. The 4f-4f transitions of lanthanide ions are extensively utilised for the spectra analysis of the nature of the complexation and the evaluation is carried out by calculating energy interaction parameters like Slator Condon (Fk), Lande factor (4f), Racah Parameter (Ek), Nephelauxetic ratio (β, bonding parameter (b1/2) and percent covalency (δ)The values of oscillator strength (Pobs) of the various 4f-4f transitions and Judd-Offelt electric dipole intensity parameter(Tλ λ=2,4,6) are calculated to explain the electrostatic nature of the complexation. From the comparative study, the effect of symmetry of the ligands to the extent of the complexation is also studied.

Ultrasonic study of the molecular interaction parameters of HCl in aqueous ethanolic mixtures

S.Jagan Raj, V.Subha and S.Bangaru Sudarsan Alwar,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 650-663.

[DOI: 10.24214/jcbps.A.7.3.65063]

 

  • Abstract

    The experimental data pertaining to ultrasonic velocity, density and viscosity have been resolved for Hydrochloric acid in aqueous ethanolic binary mixtures at 30 ºC. Several acoustical parameters like intermolecular free length(Lf), relative association (R.A), Adiabatic compressibility (β), Specific acoustic impedance (Z), Free volume(Vf) and Wada’s constant(W) have been calculated from the velocity, viscosity and density data of HCl in binary mixtures. The variation of these parameters gives interesting and useful information regarding the behavior of molecules in the binary liquid mixtures. Interesting results on the structure making and structure breaking properties of the liquids have been recorded which delve directly into the solute-solvent and solvent-solvent interactions. The results obtained are presented and analyzed to study the molecular interactions that exist between unlike molecules of HCl in the binary mixtures. The method adapted to study the present work involves the usage of a single crystal variable path interferometer. The accuracy of the interferometer ranged to an accuracy of ± 0.05 %. A 10 ml specific gravity bottle was used to measure the density of the liquids. An Oswald viscometer was used to measure the viscosity of the pure liquids and liquid mixtures. The estimated accuracy was valued to 0.01s. The specific conductivity of the triply distilled water used for the study was of the order of 1X10-7Scm-1.The work can be extended to probe into the reactivity of several acids, salts and other solutes into various other binary solvent mixtures supported with computational methods that may draw other interesting conclusions. The Density results of HCl in with increased intermolecular interactions between ethanol and water molecules suggest the structure making properties of the solvent due to the added solute. These results are from the inferred decreasing density values of HCl in alcoholic water mixtures. Specific molecular interactions in the mixture are inferred by a cluster model of a stacked ethanol core surrounding the species. This is shown by the increase in ultrasonic velocity values of HCl throughout the study. The results of intermolecular free length and R.A validate the direct impact of strong molecular association due to the impact of intermolecular cohesion existing in the system. The increase in acoustic impedance, free volume and Wada’s constant confirm the existence of strong intermolecular interaction. This suggests the presence of a hydrogen bonding between HCl and the liquid mixture the results in common formulates the path for research in solution chemistry as it supplements in understanding the different types of molecular interactions existing in the system.

Reconstitution Study of Market Sample of Cefixime Trihydrate and Potassium Clavulanate Oral Suspension

Chandan Kumar and Binod Kumar Rai,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 664-667.

[DOI:10.24214/jcbps.A.7.3.66467]

  • Abstract

    Stability testing is now the key procedural component in the pharmaceutical development program for a new drug as well as new formulation. Stability tests have been carried out so that recommended storage conditions and shelf life can be included on the label to ensure that the medicine is safe and effective throughout its shelf life. Stability of a material or product to maintain a stated property value within specified period of time when stored under specific conditions is very significant for drug products. Cefixime C16H15N5O7S2 and Clavulanate Potassium as Clavulanic acid C8H9NO5.. for oral suspension (50 mg/5ml + 31.25 mg) A combination of third generation cephalosporin (Cefixime) and ß-lactamase inhibitor (Clavulanic acid) used for the treatment of various types of infections. Using HPLC method, the concentrations of Cefixime trihydrate and clavulanic acid brands, X, Y and Z at zero time were within the pharmacopial limit when reconstituted with distilled, decreases gradually with time and the reaction followed first order kinetics.

A Two Bis-Indole Alkaloids from Tabernaemontana Stapfiana Britten

Kipkemei Abraham Serem,

JCBPS; Section A; May 2017 – July 2017, Vol. 7, No. 3; 668-674.

[DOI:10.24214/jcbps.A.7.3.66874]

  • Abstract

    Two bis-indole alkaloids, compound (1) and compound (2) were isolated Tabernaemontana stapfiana Britten. The stem and the root extracts of the plant were subjected to isolation and characterization of the compounds using several chromatographic and spectroscopic techniques.

Design and synthesis of novel barbitones as potential antimicrobials

Smit B.Patel and V.G.Patel

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 675-680.

[DOI: 10.24214/jcbps.A.7.3.67580]

  • Abstract

    Title compounds have been prepared by reaction of 5-[-3-(substitutedphenyl)-1-(2-hydroxy-4-benzyloxy-3-methyl phenyl) allylidene pyrimidine-2, 4, 6(1H, 3H, 5H)-trione (2a-j) have been under taken by the reaction of chalcone of type (1a-j) with barbachuric acid in ethanol. The structural assignment of the compounds was based on elements analysis and IR, 1H NMR, 13C NMR and LC Mass spectral data. All the synthesized compounds have been screened for their antimicrobial activity to gram-positive and gram-negative bacterial strains and antifungal activity. The antimicrobial activities of the synthesized compounds have been compared with standard drugs like Amoxycillin and K.Nystinin. Purity of synthesized compounds have been checked by TLC.

Design and synthesis of novel Azatidinones analogues as potential antimicrobials

Mehta Bhoomika C. and R.A.Patel

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 681-687.

[DOI:10.24214/jcbps.A.7.3.68187]

  • Abstract

    Novel N- [3- chloro- 2- (5- bromo- 3- hydroxyphenyl)- 4- oxoazetidin- 1- yl]- 2- methyl- 3- nitrobenzamide [2 a- j] were prepared from schiff base with chloracetyl chloride and try ethyl amine in presence of benzene. The structural assignment of the compounds was based on elements analysis and IR, 1H NMR and LC Mass spectral data. All the synthesized compounds have been screened for their antimicrobial activity to gram-positive and gram-negative bacterial strains and antifungal activity. The antimicrobial activities of the synthesized compounds have been compared with standard drugs like Amoxycillin and K.Nystanin. Purity of synthesized compounds has been checked by TLC.

One-Pot Multicomponent Synthesis & Characterization of Novel Pyrazolo[5,1-b]Quinazoline Derivatives

Jaydip G. Rajpara, Arpit C. Radadia and Yogesh T. Naliapara,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 688-696.

[DOI: 10.24214/jcbps.A.7.3.68896]

  • Abstract

    5, 5-dimethylcyclohexane-1, 3-dione (dimedone) is versatile reactant for the synthesis of pyrazoloquinazoline derivatives. Thus, we sought that the reaction of dimedone, an appropriate aldehyde and 5-amino-N-cyclohexyl-3-(methylthio)-1H-pyrazole-4-carboxamide in the presence of base in isopropyl alcohol could be an effective strategy to furnish the novel pyrazoloquinazoline derivatives

Synthesis, Spectroscopic Studies and Photocatalytic Properties of Tetra (1, 4-dithin) Porphyrazines for Environmental Organic Pollutants Recovery

Hamada H. Abdel-Razik , Hassan A. Almahy ,

JCBPS; Section A; May 2017 – July 2017, Vol. 7, No. 3; 697-707.

[DOI:10.24214/jcbps.A.7.3.69707]

  • Abstract

    Condensation of 2, 3-Dichloro-1, 4-naphthoquinone with di (sodiothio) maleonitrile afforded heterocyclic thianone, 5, 10-dioxo-5, 10-dihydronaphtho [2, 3-b] [1, 4] dithiine-2, 3-dicarbonitrile. The dicarbonitrile product was cyclotetramerized in the presence of lithium/pentanol and acetic acid producing tetra 5, 10-dioxo-5, 10-dihydronaphtho [2, 3-b] [1, 4] dithiine-porphyrazine (designed as 2H-Pz). Also, the dicarbonitril compound was cyclotetramerized by metal salt and quinoline producing tetra 5, 10-dioxo-5, 10-dihydronaphtho [2, 3-b] [1, 4] dithiine-porphyrazinato-metal II (designed as M-Pz, M is Co, Ni or Cu). Elemental analysis, IR and NMR spectral data of the prepared compounds are in agreement with their assigned structures. Molecular masses and metal contents of the prepared compounds assure the efficiency of cyclotetramerization and complexation processes. The photoactivity of the prepared porphyrazines was extended to the visible light region, efficient sensitized catalysts by using of solar energy for the completely photocatalytic degradation of acid yellow 36 dye in wastewater within 180 minutes.

Synthesis, Characterization and Antifungal Studies of Organosilicon (IV) Complexes Derived From Mixed Azines

Dr. Priya Duggal

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 708-714.

[DOI: 10.24214/jcbps.A.7.3.70814]

  • Abstract

    Some novel hexa-coordinated organosilicon (IV) complexes with SiO2N2 skeleton were synthesized by the reaction of diethoxydiphenylsilane with mixed azines. The mixed azine ligands were prepared by the condensation of salicylaldehyde and hydrazine with benzaldehyde/acetophenone in 1:1:1 molar ratio. The resulting complexes were characterized by elemental analysis, IR and multinuclear (1H, 13C, 29Si) NMR spectroscopy and molar conductance measurement. The organosilicon (IV) complexes were also screened for their antifungal activity and were found to be quite active in this respect.

Application of Obligatory Minimum Valency to Combinatorial Enumeration of Iceane Analogs

Crislain Bissielou , Jean-Jacques Anguileb, Thomas Makanib, Robert Martin Nemba,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 715-727.

[DOI: 10.24214/jcbps.A.7.3.71527]

  • Abstract

    The Obligatory minimum valency restriction, characteristics monomials obtained by the method of direct subduction of irreducible representations are used to perform Combinatorial Enumeration of Iceane analogs where the solving gives a generating function.

Determination of naturally occurring radioactive materials (NORMs) in metallic minerals and related industry in Kosovo

Erjon Spahiu, Gerti Xhixha, Ferat Shala, Merita Kaçeli Xhixha, Fadil Hasani,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 729-734,

[DOI: 10.24214/jcbps.A.7.3, 72934]

  • Abstract

    In this study, we present the preliminary results on the identification of Naturally Occurring Radioactive Materials (NORMs) in minerals, products, and residue streams coming from Pb-Zn and Fe-Ni industries in Kosovo. The activity concentrations of 40K, 226Ra and 232Th in 21 samples are determined by using gamma-ray spectrometry method with HPGe detectors. The activity concentration of 40K, 226Ra and 232Th is found to be 123±9 Bq/kg, 9±1 Bq/kg and 6±1 Bq/kg in Pb-Zn minerals, and 4±2 Bq/kg, 8±1 Bq/kg and 2±1 Bq/kg in Fe-Ni minerals. In general, we observe an increase of radionuclides in tailing and slag residues. However, according to the Council Directive No. 2013/59/EURATOM, the NORM concentrations in industrial residues from stream processes are much lower than the exemption reference levels for 238U, 232Th and 40K, respectively 1 kBq/kg, 1 kBq/kg and 10 kBq/kg. Therefore, these residues do not pose any radiological hazard due to their management and further disposal. Regarding the radiological hazard, these residues are studied for the possibility of recycling them as building materials and further investigations of the physical-mechanical and chemical properties need to be undertaken.

Study of photochemical reaction involving nitrosylpentacyanoferrate (II): Urea &Thiourea mix ligand system

M. R. Mehta, N. R. Goyal and Bhoomika R. Gajjar,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 735-744.

[DOI: 10.24214/jcbps.A.7.3.73544.]

  • Abstract

    The photochemical reactions of sodium nitroprusside will provide some alternate routes to substitute cyanide ligand in Na2[Fe(CN)5NO].2H2O by other mix ligands. The ligand exchange reactions of Na2[Fe(CN)5NO].2H2O have been observed with using spectral and analytical methods and the products were characterized by elemental analysis. The activation parameters are reported and also the structures of the investigated compounds are discussed. Tentative mechanisms for these photochemical reactions have been proposed. We have also reported antimicrobial activity against E.coli, Bacillus cereus, Yeast, and Aspergillus niger for the investigated compounds. MIC was determined for newer complexes

Synthesis and Characterization of ZnO Nanoparticles by Non-Aqueous Sol-Gel Route

 Vandana Wadia, Arpan Bhardwaj, Gautum Kishore Sharma, Nayma Siddiqui,

JCBPS; Section A; May 2017 – July, 2017, Vol. 7, No. 3; 745-750.

[DOI: 10.24214/jcbps.A.7.3.74550]

  • Abstract

    In the present work zinc oxide nanoparticles (ZnO) were successfully synthesized by non-aqueous sol gel route, in presence of organic acid like oxalic acid, and a base like potassium hydroxide (KOH). The nanoparticles are uniformly distributed by both modifiers in Non-aqueous sol-gel method in large area, which is due to an extremely high stability of charged nanoparticles generated from Zn(NO3)2/KOH and Zn(NO3)2/oxalic acid solutions. The particles are Spherical in the case of Zn(NO3)2/KOH and narrower also in the case of Zn(NO3)2/oxalic acid ZnO nanoparticles, and it is decreased in higher concentration. The conclusions are drawn with the help of various instrumental techniques like scanning electron microscope (SEM), and transmission electron microscope (TEM).

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