Indian Journal of Chemistry

Sect. A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical

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CODEN: ICACEC; ISSN: 0376-4710 (Print), 0975-0975 (Online)

 

 

 

 

VOLUME 57A

NUMBER 06

JUNE 2018

CONTENTS

 

753

 

Intermolecular interactions in binary mixtures of phosphonium based ionic liquid and propanoic acid

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bakusele Kabane, Rajasekhar Chokkareddy,
Natesh Kumar Bhajanthri & Gan G Redhi
*

 

 

 

Trihexyltetradecylphosphonium chloride [P+14, 6, 6, 6][Cl ̶ ] ionic liquid+propanoic acid binary mixtures show negative deviations from the ideal mixing behaviour. The negative excess molar volumes indicate strong interactions between IL and PA, showing easy accommodation of PA in the voids of IL molecules. The positive and high apparent molar volume values indicate strong ion solvent interactions, which become stronger as the temperature rises.

 

Fig-1.tif

 

 

761

 

Deviations in viscosity and thermodynamics of viscous flow for binary mixtures of methyl acrylate with
1-alkanols at different temperatures

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A K Nain*, P Droliya & J Gupta

 

 

 

The negative values of deviations in viscosities of methyl acrylate+1-alkanol (C4C10) binary mixtures indicate weak interactions, with the magnitudes following the order: 1-butanol > 1-hexanol > 1-octanol > 1-decanol. The applicability of various empirical and semi-empirical models for estimation of viscosity of these mixtures is discussed.

 

GA_Final

 

 

770

 

Sensitive measurement of trace amounts of promethazine hydrochloride at MWCNT-COOH nanostructures modified pencil graphite electrode based on charge transfer complex formation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ali Mohammad Amani*, Mohammad Hassan Motaghedifard*, Ebrahim Honarmand, Mahnaz Motmaen, Younes Ghasemi, Amir Savardashtaki & Ali Arabi Monfared

 

 

 

Functionalized multiwalled carbon nanotubes (MWCNT-COOH) pencil graphite electrode has been fabricated to detect trace amounts of promethazine hydrochloride (PMZ). The MWCNT-COOH@PGE shows good electrocatalytic activity for oxidation of PMZ over two wide linear ranges, i.e., 0.0562.5 μM and
62.5275.0 μM and a good detection limit (5.61 nM) for PMZ.

 

Fig-6.tif

Notes

 

778

 

Hydroxylation of benzene and toluene by heterogeneous iron metal-organic framework
(Fe-BTC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Samiran Bhattacharjee

 

 

 

Liquid phase catalytic hydroxylation of benzene by a
Fe-containing MOF (Fe-BTC; BTC= 1,3,5-benzenetricarboxylate) using 30% hydrogen peroxide as an oxidant exhibits good activity and high product selectivity (phenol, >90%) in acetonitrile at
65 C. It is also efficient for the hydroxylation of toluene to
o-cresol and p-cresol under similar conditions. The catalyst can be reused four times without significant loss of catalytic performance. Hot filtration experiments suggest that the hydroxylation reaction occurs on the Fe sites in the MOF matrix.

 

 

784

 

Effect of γ-radiation on structure, photoluminescence properties and in vitro cytotoxicity of LaPO4:Tb3+,Ce3+ phosphor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vema Reddy Bheeram, Sudheer Gurugubelli,
Anima S Dadhich, Anil Kumar Badana, Rama Rao Malla, Abhijit Saha & Saratchandra Babu Mukkamala
*

 

 

 

Lauric acid capped Ce3+ sensitized LaPO4:Tb3+ nanorods, synthesized by hydrothermal route at 150 C, exhibit four emission peaks at 485, 551, 583 and 619 nm corresponding to 5D47F6, 5D47F5, 5D47F4 and 5D47F3 transitions, respectively. LaPO4 and LaPO4:Tb3+,Ce3+ phosphors exhibit 8082% cytotoxic effect against the breast cancer cell lines, MDA-MB 231 and MCF-7. The IC50 values for LaPO4 and LaPO4:Tb3+,Ce3+ phosphors are 17.2 and 13.5 g/mL against MCF-7, and, 21.5 and 15.0 g/mL against MDA-MB 231 cell line, respectively.

 

Graphical Abstract (5)

 

 

791

 

Effect of third component on separation behavior of water+t-butanol+Na2SO3/Na2SO4 system at 2982 K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vidhya V Jadhav, Sanjay S Kolekar, Rajendra R Kumbhar, Bhaskar V Tamhankar & Sandip R Sabale*

 

 

 

The phase diagrams for the t-butanol+water+Na2SO3/Na2SO4 system are constructed from the solubility data and salting-out effect of salt anions has been described. The salting-out ability of Na2SO3 is higher than that of Na2SO4.

 

sulphite pahese diagram

 

 

 

795

 

Guide to Authors

 

 

 

 

 

 

 

Authors for correspondence are indicated by (*)

 

 

 

 

 

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Indian Journal of Chemistry

Vol. 57A, June 2018, pp. 753-760

 

Intermolecular interactions in binary mixtures of phosphonium based
ionic liquid and propanoic acid

Bakusele Kabane, Rajasekhar Chokkareddy, Natesh Kumar Bhajanthri & Gan G Redhi*

Physical Chemistry Laboratories, Department of Chemistry, Durban University of Technology, Durban-4000, South Africa

Email: redhigg@dut.ac.za

Received 12 February 2018; revised and accepted 18 May 2018

Thermophysical properties of binary systems containing trihexyltetradecylphosphonium chloride [P+14, 6, 6, 6] [Cl ̶ ] ionic liquid (IL) and propanoic acid (PA), have been investigated. Measurements of densities and speeds of sound have been made at p = 0.1 MPa and at varying temperatures ranging from 293.15 to 313.15 K. The computed excess properties which include excess molar volume, apparent molar volume (, intermolecular free length (Lf), isentropic compressibility, apparent molar isentropic compressibility () and deviation in isentropic compressibilityhave been computed from the experimental data of densities and speeds of sound. Based on the calculated derived properties, it is evident that the investigated IL and PA exhibit strong interactions across the entire mole fraction composition. Good correlation has been achieved with the Redlich-Kister equation.

Keywords: Solution chemistry, Ionic Liquids, Trihexyltetradecylphosphonium chloride, Propanoic acid, Density, Excess molar volumes, Speeds of sound

 

 

Indian Journal of Chemistry

Vol. 57A, June 2018, pp. 761-769

 

Deviations in viscosity and thermodynamics of viscous flow for binary mixtures of methyl acrylate with 1-alkanols at different temperatures

A K Nain*, P Droliya & J Gupta

Department of Chemistry, Dyal Singh College (University of Delhi), New Delhi 110 003, India

Email: ak_nain@yahoo.co.in

Received 7 November 2017; revised and accepted 14 May 2018

The viscosities (h) of binary mixtures of methyl acrylate with 1-butanol, 1-hexanol, 1-octanol and 1-decanol, including those of pure liquids, over the entire composition range are reported at different temperatures (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K. From the experimental data, the deviations in viscosity (Dh) have been calculated. The Dh values are found to be negative over the entire composition range for these mixtures, indicating the presence of weak interactions between methyl acrylate and 1-alkanol molecules. The magnitude of negative deviations in Dh values follows the order: 1-butanol < 1-hexanol < 1-octanol < 1-decanol. It is observed that Dh values depend upon the length of the alkyl chain in 1-alkanols. Also, the interactions between methyl acrylate and 1-alkanols decrease with increase in alkyl chain length. The thermodynamics of viscous flow has been analyzed by using Eyring and Arrhenius approaches and the results have been compared and discussed in terms of intermolecular interactions between the molecules. Further, the viscosities of these binary mixtures computed theoretically by using various empirical and semi-empirical models correlated well with the experimental findings in terms of average standard deviations.

Keywords: Solution chemistry, Binary mixtures, Viscosity, Methyl acrylate, Alkanols, Molecular interactions, Thermodynamics of viscous flow

 

 

 

 

 

Indian Journal of Chemistry

Vol. 57A, June 2018, pp. 770-777

 

Sensitive measurement of trace amounts of promethazine hydrochloride at MWCNT-COOH nanostructures modified pencil graphite electrode based on charge transfer complex formation

Ali Mohammad Amania, b, c,*, Mohammad Hassan Motaghedifardd, *, Ebrahim Honarmande, Mahnaz Motmaenf,
Younes Ghasemia, b, Amir Savardashtakig & Ali Arabi Monfaredh

aDepartment of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies,
Shiraz University of Medical Sciences, Shiraz, Iran

Email: ali_amani1383@yahoo.com

bPharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

cDepartment of Chemistry Shiraz University of Technology Shiraz, Iran

dYoung Researchers and Elites Club, Qom Branch, Islamic Azad University, Qom, Iran

Email: mhmf1359@yahoo.com

eDepartment of Chemistry, Faculty of Science, University of Qom, Qom, 37161-46611, I.R. Iran

f Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167, IR Iran

gDepartment of Medical Biotechnology, School of Advanced Medical Sciences and Technologies,
Shiraz University of Medical Sciences, Shiraz, Iran

hCentral Research Laboratory, Shiraz University of Medical Sciences, Shiraz, Iran

Received 19 June 2017; re-revised and accepted 28 May 2018

Functionalized multiwalled carbon nanotubes (MWCNT-COOH) pencil graphite electrode has been fabricated to detect trace amounts of promethazine hydrochloride (PMZ). The modified electrode has been applied in Fe2+/3+ probes, hydroquinone probe and PMZ solutions by cyclic voltammetry and electrochemical impedance spectroscopy. The MWCNT-COOH/PGE shows better response for electrooxidation of PMZ as compared to MWCNT/PGE based on charge transfer complex formation. Two linear dynamic ranges are seen between 0.05 and 275.0 M with the limit of detection of 5.61 nM in the analysis of PMZ by differential pulse voltammetry. The diffusion coefficient (D, cm2 s−1) and the kinetic parameters such as the electron transfer coefficient (α), and the ionic exchanging current density (io) for PMZ have also been determined using electrochemical approaches. The modified electrode has been applied to determine PMZ in real sample with satisfactory results.

Keywords: Electrochemistry, Electroanalytical chemistry, Electrooxidation, Multiwalled carbon nanotubes, Carbon nanotubes, Nanotubes, Pencil graphite electrodes, Graphite electrodes, Prometazine hydrochloride

 

 

Indian Journal of Chemistry

Vol. 57A, June 2018, pp. 778-783

 

Hydroxylation of benzene and toluene by heterogeneous iron metal-organic framework (Fe-BTC)

Samiran Bhattacharjee

Centre for Advanced Research in Sciences (CARS), University of Dhaka, Dhaka 1000, Bangladesh

Email: s.bhattacharjee@du.ac.bd/ drsamiran@hotmail.com

Received 20 September 2017; re-revised and accepted 25 May 2018

Liquid phase catalytic hydroxylation of benzene and toluene by Fe-containing metal-organic framework
(Fe-BTC; BTC = 1,3,5-benzenetricarboxylate) using 30% hydrogen peroxide as an oxidant exhibits good activity and high product selectivity under mild reaction conditions. The effects of temperature, time, substrate/ hydrogen peroxide mole ratio and solvent on catalytic performance are investigated. The catalyst can be reused four times without significant loss of catalytic performance. The hot filtration experiments suggest that hydroxylation reaction occurs on the Fe sites in the MOF matrix. The crystallinity and structure of Fe-BTC remain unchanged during the catalysis reaction, as confirmed by comparison of XRD, FTIR and SEM of the fresh and reused catalyst.

Keywords: Catalysis, Liquid phase catalysis, Metal organic frameworks, Hydroxylation, Fe-BTC, Benzene, Toluene

 

 

Indian Journal of Chemistry

Vol. 57A, June 2018, pp. 784-790

 

Effect of γ-radiation on structure, photoluminescence properties and
in vitro cytotoxicity of LaPO4:Tb3+,Ce3+ phosphor

Vema Reddy Bheerama, Sudheer Gurugubellia, Anima S Dadhicha, Anil Kumar Badanab, Rama Rao Mallab, Abhijit Sahac & Saratchandra Babu Mukkamalaa, *

aDepartment of Chemistry, GIS, GITAM (Deemed University), Visakhapatnam 530 045, AP, India

Email: mscbabu@yahoo.com

bDepartment of Biochemistry and Bioinformatics, GITAM (Deemed University), Visakhapatnam 530 045, AP, India

cUGC-DAE consortium for Scientific Research, Kolkata 700 098, WB, India

Received 9 June 2017; re-revised and accepted 22 May 2018

Lauric acid capped Ce3+ sensitized LaPO4:Tb3+ nanorods have been synthesized by hydrothermal route at
150 C. The structure, stability and luminescent properties have been examined by TEM, TG/DTA, FT-IR, powder X-ray diffraction and PL spectral data. Cytotoxic activity has been examined by MTT assay. The LaPO4:Tb3+,Ce3+ phosphor exhibits four emission peaks at 485, 551, 583 and 619 nm corresponding to 5D47F6, 5D47F5, 5D47F4 and 5D47F3 transitions, respectively. The influence of γ-radiation on photoluminescence properties of LaPO4:Tb3+,Ce3+ phosphor has also been examined at 5 and 300 kGy. Furthermore, LaPO4 and LaPO4:Tb3+,Ce3+ phosphors exhibit 8082% cytotoxic effect against breast cancer cell lines, MDA-MB 231 and MCF-7. The IC50 values for LaPO4 and LaPO4:Tb3+,Ce3+ phosphors are 17.2 and 13.5 g/mL against MCF-7 and 21.5 and 15.0 g/mL against MDA-MB 231 cell line, respectively.

Keywords: Phosphors, Hydrothermal synthesis, Luminescence, Gamma radiations, Cytotoxicity, Lanthanum phosphates, Rare earths, Cerium, Terbium

 

 

Indian Journal of Chemistry

Vol. 57A, June 2018, pp. 791-794

 

Effect of third component on separation behavior of
water+t-butanol+Na2SO3/Na2SO4 system at 2982 K

Vidhya V Jadhava, b, Sanjay S Kolekarb, Rajendra R Kumbharc, Bhaskar V Tamhankard, Sandip R Sabalea,*

aDepartment of Chemistry, Jaysingpur College, Jaysingpur 416 101, (Shivaji University), India

Email: srsabale@gmail.com

bDepartment of Chemistry, Shivaji University, Kolhapur 416 004, India

cDepartment of Chemistry, YCIS Satara 415 004, (Shivaji University), India

dDepartment of Chemistry, Wilingdon College, Sangli 416 415 (Shivaji University), India

Received 31 January 2018; revised and accepted 31 May 2018

The liquid-liquid and liquid-liquid-solid equilibria for the ternary t-butanol-water-Na2SO3/Na2SO4 system is reported at ambient pressure and at 2982 K. The solubility data of solutions of Na2SO3/Na2SO4 in water, t-butanol and solutions of varying compositions of t-butanol in water are reported. The phase diagrams for the studied systems are developed and salting-out effect of salt anion has been described. The structural properties of aqueous t-butanol solutions and the salting-out effect of SO32- and SO42- ions to cause phase separation have been explained. The salting-out ability of Na2SO3 is higher than that of Na2SO4 since the Gibbs free energy of hydration (ΔGhyd) of SO42- (−1080 kJ mol-1) is lower than that of SO32- (−1295 kJ mol-1) ion.

Keywords: Solution chemistry, Phase diagrams, Butanol, Water, Sulphite, Sulphate, Na2SO3, Na2SO4, Salting-out