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Syntheses, crystal structures and properties of three compounds based on the dicarboxylate ligand with S-S flexible linkage Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-12-16 Xin Wang, Ying Wang, Lei Guan
Three new compounds, [MnL(2,2΄-bipy)2]n·1.5nH2O (1), Co(4,4ˊ-bipy)(H2O)4·2HL (2) and 2HL·(4,4ˊ-bipyH)·2H2O (3) (H2L = 2,2΄-dithiosalicylic acid, 2,2΄-bipy = 2, 2΄-bipyridine, 4,4΄-bipy = 4,4΄-bipyridine), have been synthesized by hydrothermal and evaporation methods. Structural determination reveals that compound 1 shows a one-dimensional chain structure with L2- ligands adopting bridging coordination
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New Mn(II)-coordination polymer based on flexible benzimidazol ligand: Crystal Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-12-16 Zhiming Ni, Shuchen Ding, Yuan Qu, Hongbo Yu, Junjie Xia
In this study, a Mn(II)-based coordination polymer with the chemical composition of {[Mn(L)(TBTA)(H2O)2]ꞏH2O}n (1) has been prepared by reacting Mn(OAc)2ꞏ2H2O with the flexible ligand 1,4-bis(5,6-dimethylbenzimidazol-1-yl)-2-butylene in the aid of the carboxylic acid ligand tetrabromoterephthalic acid (H2TBTA) through the mixed-ligand method. Its application value on osteosarcoma has been measured
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Application value of Co(II) coordination polymer in the treatment and operational nursing of hypothermia Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-12-16 Sha Li, Ye Li, Fang-Yu Zhou
A novel coordination polymer, [Co3(OABDC)2(bipy)3 (H2O)6]n(CH3OH)n(H2O)4.5n (1), has been synthesised by hydrothermal method with the coordination of 4,4′-bipy ligand and 3,5-dicarboxyphenoxyacetic acid (H3OABDC) to cobalt(II) ions. The treatment and nursing application values of 1 on hypothermia in patients undergoing surgery has been examined, and the specific mechanism is explored. The application
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Mixed ligand complex of monovalent copper with benzimidazole derivatives and alanine: Synthesis, characterization and antimicrobial studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-12-16 Poonam Yadav, Shobhana Sharma, Suman Kumari, Seema, Mamta Ranka
xed ligand complexes of transition metal ions exhibit broad range of biological activities. Schiff bases containing azomethine (C=N) group and amino acids are versatile compounds for design of ternary complexes. An attempt has been made to synthesize novel copper(I) complex by the reaction of two ligands, 2-N-(4-methyl phenyl ethanimine) benzimidazole [MPEIBI] as L1 and an amino acid Alanine as L2
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DFT, TD-DFT and biological activity studies of some maleanilic acid derivatives ligands and their organometallic complexes Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-12-16 Khloud R Oraby, Fatma S M Hassan, M A Zayed, Adila E Mohamed, Islam M Abdellah
This study is a complementary study to our previous study that included the synthesis and characterization of some maleanilic acid derivative ligands (L1-4) and their metal carbonyl complexes (2-4)a-d as effective compounds for cancer cell growth inhibition against three cancer cell lines: HCT-116, HepG-2 cells and MCF-7. The activity data has manifested that the p-nitrophenyl maleanilic acid ligand
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Novel Co(II) metal complexes of N, O donor salicyloylpyrazoleoxime Schiff bases: synthesis, spectroscopic studies and antimicrobial evaluation Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-11-16 N T Dhokale, A V Nagawade
Five novel mononuclear Co(II) chelate complexes derived from salicyloylpyrazoleoximes have been synthesized and characterized using elemental analysis, spectroscopic methods (UV-visible, IR, 1H NMR) and thermal analysis. The elemental analysis suggests that the Schiff Base Co(II) complexes have 1:2 stoichiometry. The spectroscopic determination suggest the complexes are square planer and the Schiff
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P123 assisted sol-gel combustion synthesis of mesoporous strontium titanate nanomaterials for photocatalytic degradation of methylene blue Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-11-16 Juliya Acha Parambil, Abdul Mujeeb V M, Sreenivasan Koliyat Parayil
We have reported the synthesis of strontium titanate (ST) nanomaterials via sol-gel combustion method in the presence and absence of pluronic P123 as a templating agent and citric acid as fuel at relatively high temperature. The presence of templating agent and fuel helps to generate mesoporosity in the materials resulting in mesoporous strontium titanate (MST). The materials are well characterized
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Synthesis, characterization, biological activities of Schiff base metal(II) complexes derived from 4-hydroxy-3,5-dimethoxybenzaldehyde and 3-aminoquinoline Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-11-16 Somasundaram Karthik, Thulasimani Gomathi, Subramaniam Vedanayaki
A new Schiff base ligand (E)-2,6-dimethoxy-4-((quinolin-3-ylimino)methyl)phenol (HL) and its Cu(II), Co(II), Ni(II) and Zn(II) metal complexes have been synthesized and characterized by various spectroscopic (UV-visible, IR, NMR and mass), SEM and magnetic susceptibility measurement. The ligand (HL) have been synthesized by condensation of 4-hydroxy-3,5-dimethoxybenzaldehyde and 3-aminoquinoline. Based
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Microwave synthesis, characterization and biological activities of transition metal complexes with novel SNSN donor Schiff base ligand Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-11-16 P R Sagunthala Devi, S Theodore David, C Joel, R Biju Bennie, S Daniel Abraham
A novel Schiff base (E)-N-(pyridine-2-yl)thiophen-2-ylmethylene)hydrazine carbothioamide (L), has been synthesised by the condensation of thiophen-2-carbaldehyde and 4-(pyridin-2-yl)-thiosemicarbazide, using solvent free microwave synthesis. The Co(II), Ni(II), Cu(II) and Zn(II) complexes of the Schiff base are also prepared. They are characterised by elemental analysis, EI-mass spectrum, 1H &13C-NMR
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Synthesis, crystal structure, luminescent, and photocatalytic properties of a uranyl(VI)-organic framework based on tripodal flexible zwitterionic ligand Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-11-16 Yuning Meng, Fei Niu, Xiaolin Zhang, Donghui Liu, Qiaofa Lan, Youming Yang
The uranyl-organic framework based tripodal flexible zwitterion ligand 1,1',1''-[benzene-1,3,5-triyltris(methylene)] tris(pyridine-4-carboxylic acid) tribromine (H3LBr3), [(UO2)2(μ3-O)(μ2-OH)L]NO3·nH2O (n ≈ 5) (1) has been synthesized under hydrothermal condition and characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis
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Dirhenium carbonyl compounds bearing cis-1,2-bis(diphenylphosphino)ethylene and cis-1,2-bis(diphenylphosphino)ethylene oxide ligands Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-10-14 Md Mahbub Alam, Fahima Islam, Tareque SM Abedin, Shariff E Kabir, Kazi A Azam
Reaction of [Re2(CO)9(MeCN)] with cis-1,2-bis(diphenylphosphino)ethylene (cis-Ph2PCH=CHPPh2) in boiling benzene (80 °C) afforded two compounds, ax-[Re2(CO)9(κ1-cis-Ph2PCH=CHPPh2)] (1) and ax-[Re2(CO)9{κ1-cis- Ph2PCH=CHPh2P(O)}] (2) where the ligand is axially coordinated in a κ1 monodentate fashion through phosphorus. The close-bridged compound eq-[Re2(CO)8(μ-κ2-cis-Ph2PCH=CHPPh2)] (3) is obtained
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Selective hydrogenation of cinnamaldehyde using palladium based bimetallic catalysts Pd-M/TiO2 (M=Cu, Ag and Au) Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-10-14 A Saranya, G Vivekanandan, K R Krishnamurthy, B Viswanathan
Pd based bimetallic catalysts, Pd-M, (M=Cu, Ag, and Au) supported on TiO2 P-25, have been prepared by chemical reduction with glucose and characterized by XRD, TEM, XPS, DRS, TPR and H2TPD. Activity for the conversion of cinnamaldehyde (CAL) and selectivity to hydro-cinnamaldehyde (HCAL), cinnamyl alcohol (COL) and hydrocinnamyl alcohol (HCOL) have been evaluated in the temperature range of 120-140
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Elctrocatalytic oxygen evolution reaction on Mg, Al and Fe doped spinel oxides Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-10-14 Basant Lal
Metal doped cobalt-based spinel type catalysts prepared by co-precipitation route are considered as suitable candidates for OER, ORR, metal air batteries, fuel cells, detoxification of water, etc. For the purpose, metal doped oxides with formula MCo2O4 (M= Mg, Al and Fe) have been prepared by thermal decomposition of their metal carbonate precipitates and characterized by IR, XRD, CV, EIS and Tafel
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Synthesis and characterization of some binuclear alkylene dithiophosphate complexes of bis(acetylacetonato)aluminium(III)-di-(μ-isopropoxo)di-isopropoxoaluminium(III) and sol-gel synthesis of nanosized θ-alumina Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-10-14 Vinita Sharma, Anita Raj Sanwaria, Nikita Sharma
Reactions of bis(acetylacetonato)aluminum(III)-di-(μ–isopropoxo)-di-isopropoxoaluminum(III) (A) with a variety of alkylenedithiophosphoric acids in different molar ratio yield products of the type [(CH3COCHCOCH3)2Al(μ-OPri)2Al{S(S)P(O-G-O)n(OPri)2-n] (1-9) {where G = C(CH3)2C(CH3)2, n=1[1], n=2[2]; -CH2CH(C2H5), n=1[3], n=2[4];CH2CH(CH3), n=1[5], n=2[6];C(CH3)2CH2CH(CH3), n=1[7]; CH(CH3)CH(CH3) n=1[8]
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Thermophysical studies of protonated and deprotonated glycine in aqueous sodium acetate buffer solutions at different temperatures Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-10-14 Poonam Patyar, Gurpreet Kaur
Interactions of glycine in water and in (0.10, 0.50 and 1.00) mol kg−1 aqueous sodium acetate buffer solutions of pH(1.00 and 12.40) have been investigated at different temperatures, T(K) = (298.15-318.15). Densities, 𝜌 and viscosities, 𝜂 of glycine in water and in aqueous sodium acetate buffer solutions have been measured. The obtained density data have been used to calculate apparent molar volume
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Reversed-phase high-performance liquid chromatography method for impurity profiling of generic drug Calcium Orotate Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-10-14 Suresh Babu Krishnan, Berlina Maria Mahimai, Paradesi Deivanayagam
New reversed-phase high-performance liquid chromatography method has been developed and validated for the identification of impurity in calcium orotatedihydrate (CaOD) drug. The developed method has been achieved superior resolution between the impurity and CaOD using Alltima C-18 column (250 X 4.6 mm, 5 μm). The method has been established by isocratic mobile phase comprising of 0.01 mol/L of potassium
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Impact of sodium ion impregnation on the photocatalytic hydrogen evolution activities of anatase/rutile mixed phase TiO2 nanomaterials Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-09-17 Sruthy Raj P, Prathyusha K R, Resmi M R, Sreenivasan Koliyat Parayil
Sodium ion impregnated anatase/rutile mixed phase TiO2 material has been synthesised by sol-gel method and characterised for understanding the solar hydrogen production activities. The presence of sodium ion can influence the crystallinity, crystallite size and photocatalytic efficiency of mixed phase TiO2. The hydrogen evolution activities of the sodium impregnated TiO2 and bare TiO2 materials are
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Fluorine and chlorine gas storage by confinement inside boron nitrogen nanotubes Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-09-17 Yasmine Fatima Zohra Assas, Yamina Belmiloud, Mohammed Lamine Abdelatif, Soraya Abtouche, Meziane Brahimi, Bahoueddine Tangour
DFT calculations using the WB97XD and CAM-B3LYP functional and the basis set 6-31G(d,p) have been performed to study the interaction between the X2(X=F or Cl) molecule and boron nitrogen nanotubes (BNNTs). Each molecule is confined within BNNTs with different dimensions in either parallel or perpendicular positions along the nanotube axis. The interaction between X2 molecule and BNNT nanotube differed
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Spectroscopic characterization and electronic structure analysis of Linagliptin by DFT method Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-09-17 Vijayakumar Balasubramanian, Sathyanarayanamoorthi Venkatachalam, Kannappan Venu, Naresh Kumar Palanisamy
The spectroscopic and electronic characterization of the molecule Linagliptin (LGP), one of the most important type-2 diabetes drugs, has been studied by the quantum mechanical method. The optimized molecular structure, electronic properties, dipole moment, rotational constants and important thermodynamic parameters of LGP molecule have been computed using HF (Hartree-Fock) and DFT (density functional
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Interaction studies of diglycine with aqueous solutions of sulphathiazole drug at different temperatures Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-09-17 Amalendu Pal, Surbhi Soni
The interactions of diglycine with sulphathiazole drug as a function of temperatures have been studied using volumetric and acoustic parameters. Densities and speeds of sound of diglycine in (0.001, 0.002, 0.005 and 0.010) mol·kg-1 aqueous solutions of sulphathiazole drug have been measured at five different temperatures of (288.15, 293.15, 298.15, 303.15 and 308.15) K under 0.1 MPa pressure. From
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Molecularly imprinted electrochemical sensor based on electrode modified by functionalized carbon nanotube for selective detection of uric acid Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-09-17 Yongfu Zhao, Hui Liu, Wen Lv, Yanhuan Wang
In this study, we have developed a novel biomimetic electrochemical sensor sensitized with functionalized carbon nanotubes using a molecularly imprinted film as a recognition element for the rapid detection of uric acid. Using K3[Fe(CN)6] as a probe, uric acid imprinted films on electrodes are characterized by voltammetry measurements and electrochemical impedance spectroscopy. The optimizations of
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Molecular structure, spectroscopic and DFT studies of 2-(4 ethoxyphenyl) isoindoline-1,3-dione Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-09-17 Meryem Evecen, Hasan Tanak, Gülcan Duru, Seher Meral, Ayşen Alaman Ağar
2-(4-Ethoxyphenyl)isoindoline-1,3-dione molecule has been characterized by experimental FT-IR and UV-visible spectroscopic methods. Density fuctional theory calculations of the molecular structure and vibrational spectra have been performed using the B3LYP/6-311++G(d,p) level of theory for the 2-(4-ethoxyphenyl)isoindoline-1,3-dione. The theoretical results are compared with the experimental observations
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Computational and experimental study of molecular interaction in a ternary liquid mixture of cyclohexylamine+ethanol+benzene Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-08-23 Hema, Tara Bhatt, Tarun Pant, Charu Ch Dhondiyal, Himani Tiwari
In the present investigation, we undertake the study of molecular interaction in a ternary mixture of cyclohexylamine (CHA), ethanol (Eth) and benzene (B) theoretically as well as experimentally. We study the interaction between CHA dimer and complexes (Eth-CHA, B-CHA, CHA-Eth-B) theoretically using DFT (Density functional theory) in gas phase. It includes the quantum chemical calculations of interaction
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Hantzsch synthesis of 1,4-dihydropyridine derivatives over ZnO/ZrO2 catalyst under solvent free condition Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-08-23 Prasad Sunkara, M Keshavulu, Veerasomaiah Puppala, P Vijay Kumar, Manohar Basude
Hantzsch synthesis of 1,4-dihydropyridine derivatives is accomplished using novel and efficient ZnO/ZrO2 catalyst. The catalysts prepared by facile precipitation and wet impregnation method have been characterized by using techniques like XRD, SEM, EDS, UV-diffuse reflectance spectra, FTIR, XPS, BET surface area. Ex situ Pyridine absorption FTIR spectroscopy is used to determine the Bronsted and Lewis
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Fe(III), Co(II) & Cu(II) Complexes of N,N‟-Bis[2-salicylideneamino]ethane-1,2-diamine: Preparation, characterisation and in vitro antibacterial activity Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-08-23 Shital Joshi, Komal Sharma, Jaishri Jadham, Uma Sharma
Salicylaldehyde derived hexadentate Schiff base N,N‟-Bis[2-salicylideneamino]ethane-1,2-diamine (TTS) and its complexes with Fe(III), Co(II) and Cu(II) metal ions have been prepared and characterised by elemental analysis, UV-visible, IR, 1H NMR, EPR spectral analysis, mass spectrometry and XRD method. In vitro antibacterial activity of the Schiff base and its metal complexes against Gram positive
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Silver(I) catalyzed oxidation kinetics of the crystal violet dye by peroxydisulphate in aqueous and micellar media Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-08-23 Salem A Hameed, Hassan A Ewais
The kinetics of the oxidative decolcourisation of crystal violet (CV+) as a cationic dye by peroxydisulphate using silver(I) catalyst in aqueous acidic medium has been studied. The effects of different parameters like hydrogen ion, silver(I), reactants concentration, micelles and temperatures are investigated. The reaction between [CV]+ and persulphate is investigated under pseudo-first-order kinetics
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Synthesis and spectroscopic investigation of binding of novel Thiazolo [2, 3-a] isoquinoline analog with bovine serum albumin Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-08-23 Prasanna B Ranade, Dinesh N Navale, Santosh W Zote, Dnyaneshwar K Kulal, Mohmad V Sheikh, M M V Ramana
A condensation reaction between 1-cyclobutyl-3,4-dihydroisoquinoline and thioglycolic acid has been carried out using DCC yields 10b-cyclobutyl-5,6-dihydro-2H-thiazolo [2, 3-a] isoquinolin-3(10bH)-one [CBIQTGA]. The synthesized compound is characterised by using spectroscopic techniques. The interaction of CBIQTGA with bovine serum albumin has been studied using UV spectroscopy, spectrofluorimetry
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Lanthanide luminescence based probe for detection of picric acid Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-08-23 R Ananthanarayanan, Sitakanta Panda, M Sivaramakrishna, B S Panigrahi
Europium fluorescence is significantly enhanced through ligand sensitization using aromatic benzene mono and di carboxylic acids as ligands in aqueous solution. By optimising metal to ligand ratio and solution pH, it is established that the enhancement is maximum with isophthalic and terephthalic acid. Phosphorescence of isophthalic acid is recorded and its triplet energy level is found to be at 25633
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Digital camera analysis of dichlorvos by phloroglucinol and quantitate with standard colour chart in environmental water matrices – an approach Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 Kamesh Viswanathan Baskaran
Dichlorvos (DDVP) analysis using visible spectrophotometer, gas chromatography-mass spectrometry and liquid chromatography mass spectrometry has been studied extensively. The major drawback of all the method is requirement of standardisation, expensive and maintenance nature of instrument involvement. Since, many governments has banned the use of DDVP, standardisation is quite challenging with single
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Acoustical & thermodynamic properties of some ternary systems of 1-pentanol in n-hexane solution with various organic compounds using ultrasonic technique Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 P S Syed Ibrahim, J Edward Jeyakumar, S Chidambara Vinayagam
The thermo-physical parameters like density, ultrasonic velocity and viscosity have been experimentally measured for the ternary liquid mixtures of 1-pentanol with N,N dimethyl formamide (N,N-DMF) / o-methoxy phenol or 2-methoxy phenol (OMP) / m-methoxy phenol or 3-methoxy phenol (MMP) in n-hexane medium at various temperatures like 303 K, 308 K and 313 K. Certain acoustical and thermodynamic parameters
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Synthesis and characterisation of nickel-iron bimetallic oxide nanoparticles via microwave irradiation technique Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 V G Viju Kumar, Vidya V G, Arsha P Mohan
Nickel- Iron bimetallic oxide nanoparticles have been synthesized in ethylene glycol using microwave irradiation technique. The microwave assisted synthesized Nickel and iron oxide nanoparticles are combined together in 1:1 molar ratio and treated under microwave irradiation followed by calcination to get Ni-Fe bimetallic oxide. The structure and composition of nanoparticles are characterized by UV-visible
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Synthesis and photoluminescence analysis of Y1.50Sc0.50O3:Sm3+ andY1.50Sc0.50O3:Dy3+ phosphors Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 Esra Ozturk, Erkul Karacaoglu
In this study, Y1.50Sc0.50O3:Sm3+ and Y1.50Sc0.50O3:Dy3+ have been synthesized by a solid state reaction method and theirphotoluminescence (PL) properties have been investigated. Single-phase and well-crystallized cubic Y1.50Sc0.50O3:Sm3+ andY1.50Sc0.50O3:Dy3+ phosphors are obtained after calcinations at 800 ºC and 900 ºC for 6 h. X-ray diffraction patterns confirm that both phosphors have a cubic
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Highly dispersed and ultrafine Co3O4@N-doped carbon catalyst derived from metal-organic framework for efficient oxygen reduction reaction Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 Yuanyuan Chu, Bohan Deng, Kuixiao Wang, Yu Xue, Xiaoyao Tan
Electrocatalysts are composed of transition metal/metal oxide and N-doped carbon can overcome the sluggish kinetics of oxygen reduction reactio. Herein, the Co3O4/ketjen black (KB)@MOF-derived with uniformly dispersed and ultrafine Co3O4 nanoparticles (1-5 nm) are synthesized by a facile in-situ method and subsequent mild pyrolysis process. It exhibits enhanced activity with onset potential of 0.96
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Kinetics and mechanistic studies for oxidation of N-benzylhydroxylamine by a CoIII-bound bridging superoxo complex in perchloric acid medium Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 Sekhar Gain
In aqueous perchloric acid medium (pH = 0.522 – 1.3), N–benzylhydroxylamine (two electron reductant) reduces the one electron oxidant, superoxo ligand in [(dien)(en)CoIII(O2)CoIII(en)(dien)](ClO4)5 (1) to the corresponding hydroperoxo complex,[(en)(dien)CoIII(HO2)CoIII(en)(dien)]5+ (2) and itself gets oxidised to PhCH2NO following both proton coupled electron transferpath and an electron transfer reaction
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Synthesis, spectral characterisation and pharmacological studies on Co(II), Ni(II), Cu(II) and Zn(II) bis-Schiff base complexes derived from 4-hydroxybenzohydrazide Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-30 P Priya, P Jayaseelan, S Vedanayaki
The transition metal(II) chelates have been prepared by the reactions of bis-Schiff base ligands derived from 4-hydroxy benzohydrazide and isophthalaldehyde/ o-phthaldehyde in 1:1 metal to ligand ratio. The formed ligands and their metal complexes have been investigated by elemental analysis, different spectroscopic and thermal analyses techniques. The low molar conductance values give the non-electrolytic
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Method development for the voltammetric determination of nitrite in diverse matrices Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-07 Pradeep Sharma, Sonal Barmera
Catalytic electroreduction of nitrite ion in presence of thioglycolic acid in ammonium acetate buffer medium shows the possibility of devising an analytical method for determination of nitrite at low concentration. A wide linear range of 0.9-9 μg/mL is achieved. The limit of quantification is found to be 0.7 μg/mL using differential pulse polarography method. The method has been successfully applied
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Investigation on bindings of a binaphthoquinone derivative with serum albumin proteins by fluorescence spectroscopy Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-07 Jubaraj B Baruah, Bigyan R Jali
Binding of a binaphthoquinone derivative namely, 5a,5b-dimethyldibenzo[b,h]biphenylene- 5,6,11,12(5aH,5bH,11aH,11bH)-tetraone (L, C22H16O4) with bovine serum albumin (BSA) and human serum albumin (HSA) have been examined by using fluorescence spectroscopy. The fluorescence emission of the L is quenched upon addition of L to a solution of BSA or that of HSA, but the BSA has shown a higher affinity towards
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Transition metal ion (Ni2+, Cu2+ and Zn2+) doped defect pyrochlore, KTaTeO6: Synthesis, characterization and photocatalytic studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-07 M Sudheera, P Venkataswamy, K Ramaswamy, G Ravi, N Chittibabu, M Vithal
One of the strategies to decrease the bandgap energy and increase the optical absorption of the catalysts is to dope with transition metal ions. In this paper, the results obtained for the degradation of methylene blue (MB) pollutant in the presence of M2+ (M = Ni, Cu, and Zn) doped KTaTeO6 (M-KTTO) upon visible light irradiation are presented. The parent KTaTeO6 and the M-KTaTeO6 were prepared by
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Nickel(II) chelates with N-phenethyl-iminodiacetate(2-)-like ligands: Synthesis, crystal structure and spectroscopic studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-07 Dheerendra Kumar Patel, Duane Choquesillo-Lazarte, Alicia Domínguez-Martín, Josefa María González-Pérez, Juan Niclós-Gutiérrez
The stoichiometric reactions between Ni(II) hydroxy-carbonates and N-p-(R)-H2pheida derivatives (R = MeO or F for MOpheida or Fpheida, respectively) yield two binary compounds [Ni(MOpheida)(H2O)3] (1) and [Ni(Fpheida)(H2O)3] (2). The crystal of compounds 1 and 2 are iso-type; space group P21/c. Our crystallographic results revealed that both studied metal-chelates have molecular structure and the used
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Synthesis, characterization and biological evaluation of heterocyclic triazole derived Schiff base ligands comprising Mn(II) complexes: Implications of their DNA/protein binding docking and anticancer activity studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-07 T V Sangeetha, S Mohanapriya, N Bhuvaneswari
Schiff base ligands comprising heterocyclic moieties deserve distinct consideration because of their excellent chemotherapeutic and antioxidant properties as biologically active agents. In present investigation, two novel heterocyclic triazole derived Schiff base ligands have been synthesized using 3-chlorobenzaldehyde (L1), 4-methoxybenzaldehyde (L2) with 1H-1,2,4-triazol-3-amine backbone that are
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Structural characterization of catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 4,4'- bipyridine] and catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 1H-1,2,4-triazole] Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-07 Bikshandarkoil R Srinivasan, Kiran T Dhavskar, Pallepogu Raghavaiah
An attempted incorporation of N-donor ligand in the coordination sphere of Ca in the molecular solid [Ca(H2O)4(4-nba)2] (4-nba=4-nitrobenzoate) resulted in the formation of the one-dimensional (1D) coordination polymers catena-[bis(μ-4- nitrobenzoato)-diaqua-calcium 4,4'-bipyridine] 1 and catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 1H-1,2,4-triazole] 2 with the N-heterocycle functioning as a solvate
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Nickel(II) chelates with N-phenethyl-iminodiacetate(2-)-like ligands: Synthesis, crystal structure and spectroscopic studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-05 Dheerendra Kumar Patel, Duane Choquesillo-Lazarte, Alicia Domínguez-Martín, Josefa María González-Pérez, Juan Niclós-Gutiérrez
The stoichiometric reactions between Ni(II) hydroxy-carbonates and N-p-(R)-H2pheida derivatives (R = MeO or F for MOpheida or Fpheida, respectively) yield two binary compounds [Ni(MOpheida)(H2O)3] (1) and [Ni(Fpheida)(H2O)3] (2). The crystal of compounds 1 and 2 are iso-type; space group P21/c. Our crystallographic results revealed that both studied metal-chelates have molecular structure and the used
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Investigation on bindings of a binaphthoquinone derivative with serum albumin proteins by fluorescence spectroscopy Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-05 Jubaraj B Baruah, Bigyan R Jali
Binding of a binaphthoquinone derivative namely, 5a,5b-dimethyldibenzo[b,h]biphenylene-5,6,11,12(5aH,5bH,11aH,11bH)-tetraone (L, C22H16O4) with bovine serum albumin (BSA) and human serum albumin (HSA) have been examined by using fluorescence spectroscopy. The fluorescence emission of the L is quenched upon addition of L to a solution of BSA or that of HSA, but the BSA has shown a higher affinity towards
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Synthesis, characterization and biological evaluation of heterocyclic triazole derived Schiff base ligands comprising Mn(II) complexes: Implications of their DNA/protein binding docking and anticancer activity studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-05 T V Sangeethaa, S Mohanapriyab, N Bhuvaneswaric
Schiff base ligands comprising heterocyclic moieties deserve distinct consideration because of their excellent chemotherapeutic and antioxidant properties as biologically active agents. In present investigation, two novel heterocyclic triazole derived Schiff base ligands have been synthesized using 3-chlorobenzaldehyde (L1), 4-methoxybenzaldehyde (L2) with 1H-1,2,4-triazol-3-amine backbone that are
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Transition metal ion (Ni2+, Cu2+ and Zn2+) doped defect pyrochlore, KTaTeO6: Synthesis, characterization and photocatalytic studies Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-05 M Sudheera, P Venkataswamy, P Venkataswamy, G Ravi, N Chittibabu, M Vithal
One of the strategies to decrease the bandgap energy and increase the optical absorption of the catalysts is to dope with transition metal ions. In this paper, the results obtained for the degradation of methylene blue (MB) pollutant in the presence of M2+ (M = Ni, Cu, and Zn) doped KTaTeO6 (M-KTTO) upon visible light irradiation are presented. The parent KTaTeO6 and the M-KTaTeO6 were prepared by
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Method development for the voltammetric determination of nitrite in diverse matrices Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-05 Pradeep Sharma, Sonal Barmera
Catalytic electroreduction of nitrite ion in presence of thioglycolic acid in ammonium acetate buffer medium shows the possibility of devising an analytical method for determination of nitrite at low concentration. A wide linear range of 0.9-9 µg/mL is achieved. The limit of quantification is found to be 0.7 µg/mL using differential pulse polarography method. The method has been successfully applied
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Structural characterization of catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 4,4'-bipyridine] and catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 1H-1,2,4-triazole] Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-07-05 Bikshandarkoil R Srinivasan, Kiran T Dhavskar, Pallepogu Raghavaiah
An attempted incorporation of N-donor ligand in the coordination sphere of Ca in the molecular solid [Ca(H2O)4(4-nba)2] (4-nba=4-nitrobenzoate) resulted in the formation of the one-dimensional (1D) coordination polymers catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 4,4'-bipyridine] 1 and catena-[bis(μ-4-nitrobenzoato)-diaqua-calcium 1H-1,2,4-triazole] 2 with the N-heterocycle functioning as a solvate
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Synthesis, crystal structure, thermal analysis and molecular interactions of bis(3,5-dimethyl-3H-1,2,4-triazole)octamolybdate Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 K Hussain Reddy, C Phanimala, P Murali Krishna, G N Anil Kumar
This paper describes the synthesis of {bis(3,5-dimethyl-3H-1,2,4-triazole)octamolybdate}(2:1) molecule by mixing bis(acetylacetonato)dioxo molybdenum(VI) and 3-(E)-{1-(furan-2-yl)ethylidene)amino]-1-phenylurea. The structure of the molecule was determined by using single crystal X-ray diffraction technique. Structure determination reveals that the title complex Mo8O26.2(C4H9N3) contains two moieties
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Synthesis, spectral elucidation, antibacterial, antioxidant and DNA studies of ONNO tetradentate Schiff base metal(II) complexes derived from Benzene-1,4-dicarboxaldehyde Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 Kumarasamy Savitha, Subramaniam Vedanayaki
The new dibasic tetradentate (ONNO) Schiff base ligands (L1and L2) have been synthesized by the reaction of terephthalaldehyde with 2-amino 4-chlorophenol and X (where, X=2-amino 4-methylphenol, 2-aminophenol) in 1:1:1 molar ratio. The macrocyclic binuclear Co(II), Ni(II) and Cu((II) metal complexes are prepared in ligand to metal ratio 2:2. The elements, metal structure and binding sites of Schiff
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Synthesis, structure and molecular Hirshfeld surface analysis of polymeric cadmium(II) complex involving tetradentate N3S-donor ligand and dicyanamide as bridging ligand Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 Sadeka J Munshi, Mehul H Sadhu, Mridula Guin, Sujit B Kumar
One new polymeric cadmium(II) complex {[Cd(bdmpe)(µ1,5-dca)]ClO4.CH3OH}n has been synthesized by the reaction of cadmium perchlorate with ligand N,N-bis((3,5-dimethyl-1H-pyrazol-1-yl)methyl)-2-(phenylthio)ethan-1-amine (bdmpe) in presence of dca (dicyanamide, N(CN)2-) as bridging ligand in methanol and characterized by spectroscopic techniques. Single crystal X-ray diffraction study of the complex
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Synthesis, crystal structure and thermolysis kinetics of [Co(H2O)6](ClO4)2.(HMTA)2.2H2O (HMTA = hexamethylenetetramine) Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 Chandra Prakash Singh, Abhishek Singh, Nibha, Constantin G Daniliuc, Bharat Kumar, Gurdip Singh, D P Rao
A new compound, [Co(H2O)6](ClO4)2.(HMTA)2.2H2O; HMTA = hexamethylenetetramine) has been synthesized and characterized with the assistance of X-ray crystallography, elemental analysis, FT-IR spectroscopy, TG-DTA and DSC (N2 atmosphere). Both TG data model-fitting method as well as method of model free isoconversional have been employed to observe the kinetics of thermolysis of the compound. In order
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Synthesis of cationic (CTAB-EDTA-CTAB/ CTAB-Glu-CTAB) and anionic (SDS-EDTA-SDS/ SDS-Glu-SDS) Gemini surfactants: Surface and anticorrosive properties Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 Kuldeep Kumar, Priyanka Sharma, Saurabh Sharma
Gemini surfactants that served as environmentally friendly corrosion inhibitors, have been successfully synthesized by the reaction of SDS/ CTAB with glucose/ EDTA as spacer. Their molecular structure is confirmed by 1H-NMR and FTIR spectroscopy. By tensiometric method, the surface activity of the synthesized Gemini surfactants has been determined in terms of various parameters like the critical micelle
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A DFT approach to analyze charge transfer path through trans and cis isomers of azobenzene Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 C Karthika, R Praveena, K Sadasivam
The influence of external electrical field (EF) over the trans and cis isomers of azobenzene is investigated upto molecular orbital level with the aid of density functional theory. The frontier molecular orbital analysis and electrostatic potential (ESP) mapping are used to figure out the response of the molecules (trans and cis isomers of azobenzene) to the applied EF. The variation in dipole moment
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Mo- and W-containing layered double hydroxides: Mild and selective oxidation of alkenes with H2O2 Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 Uday Sankar Agarwalla
Molybdenum- and tungsten-containing (M7O246-, M = Mo or W) layered double hydroxides (LDHs) with Mg2+ and Al3+ cations in the brucite-like layer have been prepared by direct anion exchange, starting from the corresponding terephthalate precursor. The solids have been characterized by various instrumental techniques such as elemental chemical analysis, powder X-ray diffraction, infrared spectroscopy
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Synthesis of 4-{(E)-[(3-methyl-5-sulphanyl-4H-1,2,4-triazol-4-yl)imino]methyl} benzaldehyde and its complexes with Ag(I), Hg(II), Zn(II), Co(II), Ni(II) ions and its characterisation Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-06-15 Ashwini, Gopalakrishna N Bhat, Ronald A Nazareth
A novel Schiff base 4-{(E)-[(3-methyl-5-sulphanyl-4H-1,2,4-triazol-4-yl)imino]methyl}benzaldehyde (MSTB) and its complexes with Ag(I), Hg(II), Cu(II), Ni(II) and Co(II) have been prepared. MSTB is prepared by the condensation reaction between triazole and terephthaldehyde. In complexes, MSTB molecules are found to link with the metal ion, through thiolsulphur after deprotonation and the nitrogen of
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Influence of some added electrolytes on the surface and thermodynamic properties of cetylpyridinium chloride in aqueous medium Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-04-09 Suman Bala, Ram Partap, D K Tyagi, O P Yadav
The effect of some added electrolytes, viz. NaCl, CaCl2 and AlCl3, on the critical micelle concentration (CMC), maximum surface excess concentration (Gmax) and minimum area per molecule (Amin) at air-liquid interface of a cationic surfactant cetylpyridinium chloride (CPC) in aqueous solutions have been studied at 288.15, 293.15 and 298.15 K using tensiometric method. The effect of an added electrolyte
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Vapourchromic alkali metal ions complexes based on 2-phenmethylamino-7-methyl-1,8-naphthyridine Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-04-09 Quan-Qing Xu, Wei-Hua Mu, Zhi Yang, Feng-Yi Liu
A series of 2-phenmethylamino-7-methyl-1,8-naphthyridine/alkali metal ion (Li+ and Na+) complexes have been synthesized using a polymeric medium (poly(acrylic acid)) as the key activating component. Upon exposure to methanol or ethanol vapour at ambient temperature, the emission colour of prepared complexes in solid powder and thin film states changes from red-orange or pink to blue, respectively.
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Structure and electronic properties of mono and di-methyl substituted poly(p-phenylenebenzobisthiazole) oligomers: A computational study Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-04-09 J Laxmikanth Rao
The structural and electronic properties of mono and di-methyl substituted poly(p-phenylene benzobisthiazole) oligomers have been investigated theoretically employing quantum chemical calculations based on density functional theory (DFT) using the B3LYP functional. The neutral states geometries of these oligomers have been used to calculate the HOMO-LUMO gaps (DH-L), ionization potentials (IP) and
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Synthesis, characterization and antimicrobial studies of novel Schiff bases and their complexes Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-04-09 Biju Jacob, Riya Datta
Novel Schiff bases, Furan-2-carboxylic acid pyridin-4-ylmethyleneamide , and Thiophene-2-carboxylic acid 1H-indol-2-ylmethyleneamide and their mononuclear Ni(II) and Cu(II) complexes have been synthesized and characterized by elemental analysis, molar conductance, UV-visible, FT-IR, 1H NMR and EPR spectroscopy. The complexes are non-electrolytes as evidenced from the molar conductance vaules. The ligands
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Synthesis and crystal structures of 2-acetylpyridine-N(4)-methyl-3-thiosemicarbazone (L) and its metal complexes: Anticancer activity of [Cu(L)(OAc)] Indian J. Chem. Sect. A (IF 0.412) Pub Date : 2021-04-09 Chinmoy Biswas, Arnab Chatterjee, Sreelekshmi Sreekumar, Manikantan Syamala Kiran, Rajarshi Ghosh
Synthesis and structural characterization of N(4)-substituted 2-acetylpyridine-N(4)-methyl-3-thiosemicarbazone (L) and its two metal complexes [Cu(L)(OAc)] (1) and [ZnL(OAc)]2 (2) are reported. Between the two complexes 1 is found to have good anticancer activity against Human lung cancer cell line (A549). Fluorescence microscopy finds the formation of reactive oxygen species on treatment of the cancer