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Design, synthesis, characterization, antioxidant, antiproliferative activity and molecular docking studies of new transition metal complexes of 1,2,4-triazole as combretastatin A-4 analogues. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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2
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Synthesis, Characterization, Computational and Biological Activity of Some Schiff Bases and Their Fe, Cu and Zn Complexes. INORGANICS 2022. [DOI: 10.3390/inorganics10080112] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Four new symmetrical Schiff bases derived from 2,2′-diamino-6,6′-dibromo-4,4′-dimethyl-1,1′-biphenyl or 2,2′-diamino-4,4′-dimethyl-1,1′-biphenyl, and 3,5-dichloro- or 5-nitro-salicylaldehyde, were synthesized and reacted with copper-, iron- and zinc-acetate, producing the corresponding complexes. The Schiff bases and their metal complexes were characterized by 1H-, 13C-NMR, IR and UV-Vis spectroscopy and elemental analysis. The structures of one Schiff base and the two zinc complexes were resolved by X-ray structure determination. Density functional theory (DFT) calculations at the B3LYP/6-31G(d) level of the latter compounds were carried out to optimize and examine their molecular geometries. The biomedical applications of the Schiff bases and their complexes were investigated as anticancer or antimicrobial agents.
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Synthesis, computational, anticancerous and antiproliferative effects of some copper, manganese and zinc complexes with ligands derived from symmetrical 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl-salicylaldehyde. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2021. [DOI: 10.2478/pjct-2021-0002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Four new symmetrical Schiff bases derived from 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl-salicylaldehyde have been synthesized and characterized by elemental analysis and different spectroscopic techniques. The reaction of 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl with two equivalents of 5-tert-butyl-, 3,5-dinitro-, 3,5-dibromo- and 3-tert-butyl-salicylaldehyde yielded 2,2’-bis(5-tert-butyl-salicylideneamino)-4,4’-dimethyl-1,1’-biphenyl (A1) as well as the 3,5-dinitro- (A2), 3,5-dibromo- (A3) and 3-tert-butyl- (A4) substituted derivatives. The tetradentate ligands were then reacted with copper-, manganese- and zinc-acetate producing the tetra-coordinate metal complexes which were characterized by FTIR, UV-Visible spectroscopy, magnetic susceptibility and elemental analysis. Zinc complexes were characterized by 1H-NMR spectroscopy. Density functional theory (DFT) calculations at the B3LYP/6-31G(d) level of theory were carried out to fully optimize and examine the molecular geometries of complexes. Subsequently, IR vibrational and UV-Vis absorption spectra were computed and correlated with the observed values and the results are in good agreement with the experimental data. The anticancerous and antiproliferative activity of the A3 ligand and its metal complexes were determined.
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Marchetti F, Pettinari C, Di Nicola C, Tombesi A, Pettinari R. Coordination chemistry of pyrazolone-based ligands and applications of their metal complexes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.213069] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Prajapati MJ, Surati KR. Aggregation Induced Emission (AIE) Properties of Heteroleptic Ir
III
Complexes With Non‐chromophoric Ligand Effect: Synthesis, Characterization and Photophysical Investigations. ChemistrySelect 2019. [DOI: 10.1002/slct.201901618] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Meha J. Prajapati
- Department of ChemistrySardar Patel University, Vallabh Vidyanagar - 388120, Anand Gujarat India
| | - Kiran R. Surati
- Department of ChemistrySardar Patel University, Vallabh Vidyanagar - 388120, Anand Gujarat India
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Borodkin SA, Popov LD, Tsaturyan AA, Milenković MR, Shcherbakov IN, Lukov VV. Theoretical and experimental study of triphenylphosphonium Schiff base of 5-hydroxy-3-methyl-1-phenyl-4-formylpyrazole. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2018.1424159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sergey A. Borodkin
- Chemistry Department, Southern Federal University, Rostov-on-Don, Russia
| | - Leonid D. Popov
- Chemistry Department, Southern Federal University, Rostov-on-Don, Russia
| | | | | | | | - Vladimir V. Lukov
- Chemistry Department, Southern Federal University, Rostov-on-Don, Russia
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Chioma F, Ekennia AC, Osowole AA, Okafor SN, Ibeji CU, Onwudiwe DC, Ujam OT. Synthesis, characterization, in-vitro antimicrobial properties, molecular docking and DFT studies of 3-{(E)-[(4,6-dimethylpyrimidin-2-yl)imino]methyl} naphthalen-2-ol and Heteroleptic Mn(II), Co(II), Ni(II) and Zn(II) complexes. OPEN CHEM 2018. [DOI: 10.1515/chem-2018-0020] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
AbstractHeteroleptic divalent metal complexes [M(L) (bipy)(Y)]•nH2O (where M = Mn, Co, Ni, and Zn; L = Schiff base; bipy = 2,2’-bipyridine; Y = OAc and n = 0, 1) have been synthesized from pyrimidine Schiff base ligand 3-{(E)-[(4,6-dimethylpyrimidin-2-yl)imino]methyl} naphthalen-2-ol, 2,2’-bipyridine and metal(II) acetate salts. The Schiff base and its complexes were characterized by analytical (CHN elemental analyses, solubility, melting point, conductivity) measurements, spectral (IR, UV-vis, 1H and 13C-NMR and MS) and magnetometry. The elemental analyses, Uv-vis spectra and room temperature magnetic moment data provide evidence of six coordinated octahedral geometry for the complexes. The metal complexes’ low molar conductivity values in dimethylsulphoxide suggested that they were non-ionic in nature. The compounds displayed moderate to good antimicrobial and antifungal activities against S. aureus, P. aeruginosa, E. coli, B. cereus, P. mirabilis, K. oxytoca, A. niger, A. flevus and R. Stolonifer. The compounds also exhibited good antioxidant potentials with ferrous ion chelation and, 1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging assays. Molecular docking studies showed a good interaction with drug targets used. The structural and electronic properties of complexes were further confirmed by density functional theory calculations.
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Affiliation(s)
- Festus Chioma
- Department of Chemistry, Ignatius Ajuru University of EducationPort Harcourt, Rivers State, Nigeria
| | - Anthony C. Ekennia
- Department of Chemistry, Federal University Ndufu-Alike Ikwo (FUNAI), P.M.B 1010, Abakaliki, Ebonyi State, Nigeria
| | - Aderoju A. Osowole
- Inorganic Unit, Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Sunday N. Okafor
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka410001, Enugu State, Nigeria
| | - Collins U. Ibeji
- Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa
| | - Damian C. Onwudiwe
- Material Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University, (Mafikeng Campus), Private Bag X2046, Mmabatho, South Africa
- Department of Chemistry, School of Mathematical and Physical Sciences, Faculty of Agriculture, Science and Technology, North-West University, (Mafikeng Campus), Private Bag X2046, Mmabatho, 2735, South Africa
| | - Oguejiofo T. Ujam
- Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
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Abdel-Latif SA, Mohamed AA. Novel Zn(II) complexes of 1,3-diphenyl-4-(arylazo)pyrazol-5-one derivatives: Synthesis, spectroscopic properties, DFT calculations and first order nonlinear optical properties. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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9
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Orabi EA. Tautomerism and antioxidant activity of some 4-acylpyrazolone-based Schiff bases: a theoretical study. RSC Adv 2018; 8:30842-30850. [PMID: 35548767 PMCID: PMC9085507 DOI: 10.1039/c8ra05987j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 08/28/2018] [Indexed: 11/23/2022] Open
Abstract
4-Acylpyrazolone Schiff bases display antimicrobial, antiprion, antioxidant, and other biological activities. They are also used as ligands and some of their complexes possess photoluminescence and anticancer properties. These Schiff bases may exist in four tautomeric forms that correspond to H at the C (imine-one(I)), N (imine-one(II)), and O (imine-ol) atoms of the pyrazolone ring or at the azomethine N atom (amine-one). While crystal structures show the amine-one form, the identity of the tautomeric form in solution and the structure–antioxidant activity relationship of these compounds are not clear. We perform quantum mechanical investigations on nine 4-acylpyrazolone-based Schiff bases at the B3LYP/6-311++G(d,p) level of theory in the gas phase and in chloroform, dimethyl sulfoxide, and water using the polarizable continuum model (PCM). Results show that the imine-ol, imine-one(I), and imine-one(II) isomers are, in respective, 6.5–8.0, 17–20, and 19–23 kcal mol−1 less stable than the amine-one form and that solvents further stabilize the later form. The energy barrier for imine-ol to amine-one conversion is only 0–1 kcal mol−1, showing that formation of the latter form is both kinetically and thermodynamically favorable. NMR calculations show that H in the amine-one and imine-ol forms appears at δ = 11.9–12.9 and 14.0–15.7 ppm, respectively, revealing that the experimentally reported 1H NMR spectra of these compounds are due to the amine-one tautomeric form. The structure–antioxidant activity relationship is investigated and structural modifications that increase the antioxidant activity are discussed. Calculations using the PCM show that the vertical ionization potential (IPV) is inversely proportional with the ferric reducing antioxidant power (FRAP) of these compounds. IPV thus presents a valuable tool for predicting the FRAP. Computational investigations reveal that 4-acylpyrazolone Schiff bases adopt the amine-one structure and that ionization potentials provide a measure for their antioxidant activity.![]()
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Affiliation(s)
- Esam A. Orabi
- Department of Chemistry
- Faculty of Science
- Assiut University
- Egypt
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Vamja AC, Surati KR. Photoluminescent properties of novel design heteroleptic Zn(II) complexes. LUMINESCENCE 2017; 32:1197-1202. [PMID: 28513086 DOI: 10.1002/bio.3311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 01/16/2017] [Accepted: 02/08/2017] [Indexed: 11/09/2022]
Abstract
Three novel heteroleptic Zn(II) complexes containing 8-hydroxy quinoline and various pyrazolone-based derivatives were synthesized and their structures confirmed by 1 H-nuclear magnetic resonance, mass spectrometry, Fourier transform infra-red spectroscopy, UV-vis analysis and element analysis. All three complexes showed good photoluminescence properties in the solid state and in solution in the maximum emission range from 475 to 490 nm with a quantum yield of 0.45 to 0.51. Absorption spectra revealed that the complexes possessed a maximum absorption range of 272-281 nm with a band gap of 2.59-2.68 eV. The highest occupied molecular orbital and lowest unoccupied molecular orbital of all the complexes were determine by cyclic voltammetry. All complexes displayed high thermal stability. These characteristics were assessed to find suitability for an alternative cheap light emitter for organic light-emitting diodes.
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Affiliation(s)
- Atul C Vamja
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat, India
| | - Kiran R Surati
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat, India
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Puszyńska-Tuszkanow M, Zierkiewicz W, Grabowski T, Daszkiewicz M, Maciejewska G, Adach A, Kucharska-Ziembicka K, Wietrzyk J, Filip-Psurska B, Cieślak-Golonka M. Magnesium cinnamate complex, [Mg(cinn)2(H2O)2]n; structural, spectroscopic, thermal, biological and pharmacokinetical characteristics. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Synthesis, crystal structure and properties of a new 3D supramolecular unsymmetrical tetradentate Schiff bases copper (II) framework with stable tunnels. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Surati KR, Sathe PA. Schiff base pyrazolone complexes of iron (III): synthesis, characterization, antimicrobial and antioxidant activity. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1649-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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14
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Garnovskii DA, Antsyshkina AS, Makarova NI, Vlasenko VG, Sadikov GG, Sergienko VS, Zubavichus YV, Levchenkov SI, Uraev AI, Burlov AS. Electrochemical synthesis, structure, and photoluminescent properties of copper, zinc, and cadmium mixed-ligand complexes. RUSS J INORG CHEM+ 2015. [DOI: 10.1134/s0036023615120116] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Sharma N, Parihar S, Jadeja RN, Kant R, Gupta VK. Crystal structure of (Z)-3-methyl-4-((naphth-1-ylamino)methylidene)-1-phenyl-1H-pyrazol-5(4H)-one. CRYSTALLOGR REP+ 2015. [DOI: 10.1134/s106377451507024x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Pramanik HA, Paul PC, Mondal P, Bhattacharjee CR. Mixed ligand complexes of cobalt(III) and iron(III) containing N2O2-chelating Schiff base: Synthesis, characterisation, antimicrobial activity, antioxidant and DFT study. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.07.076] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Esmadi FT, Khabour OF, Abbas K, Mohammad AE, Obeidat RT, Mfady D. Synthesis, characterization and biological activity of some unsymmetrical Schiff base transition metal complexes. Drug Chem Toxicol 2015; 39:41-7. [PMID: 25791998 DOI: 10.3109/01480545.2015.1017882] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, several unsymmetrical Schiff bases and their cobalt and manganese complexes have been synthesized and characterized. The unsymmetrical Schiff bases were prepared from reaction of o-phenylendiamine derivatives with 1-hydroxy-2-acetonaphthone and then the product was reacted with the following aldehydes: salicyaldehyde, 2-hydroxynaphthaldehyde, 2-pyridinecarboxaldehyde and 2-qinolinecarboxaldehyde to produce the desired tetradentate unsymmetrical Schiff base ligands H2SL, H2NL, HPYL and HQN, respectively. Reaction of these ligands with cobalt and manganese salts produced complexes of the general formula [M(SL)], [(NL)], [M(PYL)] and [M(QL)]. All the complexes were characterized by elemental analysis, infrared spectroscopy, UV-visible spectroscopy, electrical conductivity and magnetic susceptibility measurements. The prepared complexes were examined for their anti-bacterial activity using gram-positive and gram-negative pathogens. The following complexes showed strong antibacterial activity against Staphylococcus aureus: MnSL1, MnSL2 and MnSL3. The genotoxic activity of four complexes, which are MnNL1, MnSL1, CoNL1 and CoSL1, were examined using 8-hydroxy-2-deoxy guanosine (8-OHdG) assay in cultured human blood lymphocytes. All examined complexes were found to be genotoxic at examined concentrations (0.1-100 µg/mL), but with variable magnitudes (p < 0.05). The levels of 8-OHdG induced by MnNL1 and MnSL1 were significantly higher than that induced by CoNL1 and CoSL1 ones. In general, the order of mutagenicity of the compounds is MnSL1 > MnNL1 > CoSL1 > CoNL1. In conclusion, some of the prepared complexes showed some biological activities that might be of interest for future research.
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Affiliation(s)
- Fatima T Esmadi
- a Department of Chemistry , Yarmouk University , Irbid , Jordan
| | - Omar F Khabour
- b Department of Biology, Faculty of Science , Taibah University , Medina , Saudi Arabia , and.,c Department of Medical Laboratory Sciences , Jordan University of Science and Technology , Irbid , Jordan
| | - Khamis Abbas
- a Department of Chemistry , Yarmouk University , Irbid , Jordan
| | | | - Ra'ad T Obeidat
- b Department of Biology, Faculty of Science , Taibah University , Medina , Saudi Arabia , and
| | - Doa'a Mfady
- b Department of Biology, Faculty of Science , Taibah University , Medina , Saudi Arabia , and
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Yahsi Y, Kara H. Synthesis and characterization of monomeric Mn (IV) and pseudo-tetrameric Mn (III) complexes: magnetic properties of Mn (III) complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 127:25-31. [PMID: 24632152 DOI: 10.1016/j.saa.2014.02.060] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 02/12/2014] [Indexed: 06/03/2023]
Abstract
Two novel monomer Mn (IV) [Mn(3,5-ClL1)2]⋅(CH3OH), (1), [3,5-ClL1H2=N-(2-hydroxyethyl)-3,5-dichlorosalicylaldimine] (1) and hydrogen-bonded pseudo-tetramer Mn (III) [Mn(5-BrL2)(H2O)2]2⋅[Mn(5-BrL2)(H2O)]2⋅2⋅(ClO4), (2), [5-BrL2H2=N,N'-bis(5-bromosalicylidenato)-1,2-diamino-2-methylpropane)] (2) Schiff base complexes have been synthesized and their crystal structures have been determined by single crystal X-ray diffraction analysis. A variable temperature magnetic susceptibility measurement study has been performed for complex (2) and the result indicates there is a very weak antiferromagnetic interaction (J=-0.40±0.016cm(-1)) between the two manganese (III) centers.
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Affiliation(s)
- Yasemin Yahsi
- Balikesir University, Faculty of Art and Science, Department of Physics, Balikesir, Turkey.
| | - Hulya Kara
- Balikesir University, Faculty of Art and Science, Department of Physics, Balikesir, Turkey
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Parihar S, Boricha VP, Jadeja RN. Pyrazolone as a recognition site: Rhodamine 6G-based fluorescent probe for the selective recognition of Fe3+in acetonitrile-aqueous solution. LUMINESCENCE 2014; 30:168-74. [DOI: 10.1002/bio.2709] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 04/09/2014] [Accepted: 05/02/2014] [Indexed: 12/12/2022]
Affiliation(s)
- Sanjay Parihar
- Department of Chemistry; The M. S. University of Baroda; Vadodara 390002 India
| | - Vinod P. Boricha
- Analytical Science Division; Central Salt and Marine Chemicals Research Institute (Constituents of CSIR, New Delhi), G. B. Marg; Bhavnagar 364002 India
| | - R. N. Jadeja
- Department of Chemistry; The M. S. University of Baroda; Vadodara 390002 India
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Zn(II) coordination compounds derived from 4-acyl pyrazolones and 1,10 phenanthroline: Syntheses, crystal structures, spectral analysis and DNA binding studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.07.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Kharadi GJ. Antioxidant, tautomerism and antibacterial studies of Fe(III)-1,2,4-triazole based complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 110:311-316. [PMID: 23583848 DOI: 10.1016/j.saa.2013.03.068] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 03/16/2013] [Indexed: 06/02/2023]
Abstract
New Fe(III) complexes have been synthesized by the reactions of ferric nitrate with Schiff base derived from 3-substituted phenyl-4-amino-5-hydrazino-1,2,4-triazole and indoline-2,3-dione. All these complexes are soluble in DMF and DMSO; low molar conductance values indicate that they are non-electrolytes. Elemental analyses suggest that the complexes have 1:1 stoichiometry of the type [FeLn(H2O)(OH)]·xH2O. Structural and spectroscopic properties have been studied on the basis of elemental analyses, infrared spectra, (1)H and (13)H NMR spectra, electronic spectra, magnetic measurements and FAB mass spectra. FT-IR, (1)H and (13)H NMR studies reveal that the ligand (Ln) exists in the tautomeric enol form in both the states with intramolecular hydrogen bonding. Magnetic moment and reflectance spectral studies reveal that an octahedral geometry has been assigned to all the prepared complexes. FRAP values indicate that all the compounds have a ferric reducing antioxidant power. The compounds 2 and 3 showed relatively high antioxidant activity while compound 1 and 4 shows poor antioxidant power. Also good antimicrobial activities of the complexes against Staphylococcus aureus, Bacillus subtilis, Serratia marcescens, Pseudomonas aeruginosa and Escherichia coli have been found compared to its free ligands.
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Affiliation(s)
- G J Kharadi
- Department of Chemistry, Navjivan Science College, Gujarat University, Dahod 389 151, Gujarat, India.
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Shivakumar L, Shivaprasad K, Revanasiddappa HD. SODs, DNA binding and cleavage studies of new Mn(III) complexes with 2-((3-(benzyloxy)pyridin-2-ylimino)methyl)phenol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 107:203-12. [PMID: 23429055 DOI: 10.1016/j.saa.2013.01.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 01/08/2013] [Accepted: 01/10/2013] [Indexed: 05/20/2023]
Abstract
Newly synthesized ligand [2-((3-(benzyloxy)pyridin-2-ylimino)methyl)phenol] (Bpmp) react with manganese(II) to form mononuclear complexes [Mn(phen)(Bpmp)(CH3COO)(H2O)]·4H2O (1), (phen=1,10-phenanthroline) and [Mn(Bpmp)2(CH3COO)(H2O)]·5H2O (2). These complexes were characterized by elemental analysis, IR, (1)H NMR, Mass, UV-vis spectral studies. Molar conductance and thermogravimetric analysis of these complexes were also recorded. The in vitro SOD mimic activity of Mn(III) complexes were carried out and obtained with good result. The DNA-binding properties of the complexes 1 and 2 were investigated by UV-spectroscopy, fluorescence spectroscopy and viscosity measurements. The spectral results suggest that the complexes 1 and 2 can bind to Calf thymus DNA by intercalation mode. The cleavage properties of these complexes with super coiled pUC19 have been studied using the gel electrophoresis method, wherein both complexes 1 and 2 displayed chemical nuclease activity in the absence and presence of H2O2 via an oxidative mechanism. All the complexes inhibit the growth of both Gram positive and Gram negative bacteria to competent level. The MIC was determined by microtiter method.
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Affiliation(s)
- L Shivakumar
- Department of Chemistry, University of Mysore, Manasagangotri, Mysore 570 006, Karnataka, India
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V.A. J, Vyas KM, Pandya JH, Gupta VK, Jadeja R. Studies on DNA binding behavior of biologically active Cu(II) complexes of Schiff bases containing acyl pyrazolones and 2-ethanolamine. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.776164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Joseph V.A.
- a Department of Chemistry, Faculty of Science , The M.S. University of Baroda , Vadodara , India
- b Department of Chemistry , Christ College , Rajkot , India
| | - Komal M. Vyas
- a Department of Chemistry, Faculty of Science , The M.S. University of Baroda , Vadodara , India
| | | | - Vivek K. Gupta
- c Post-Graduate Department of Physics , University of Jammu , Jammu Tawi , India
| | - R.N. Jadeja
- a Department of Chemistry, Faculty of Science , The M.S. University of Baroda , Vadodara , India
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Yahsi Y, Kara H. Synthesis, structural analysis and magnetic properties of two novel doubly oxygen bridged binuclear manganese(III) and copper(II) complexes with ONO tridentate ligands. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.11.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gungor E, Kara H. A new hydrogen-bonded pseudo-dimer Mn(III) Schiff base complex. The synthesis, X-ray structure and spectroscopic studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 82:217-220. [PMID: 21816668 DOI: 10.1016/j.saa.2011.07.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 06/13/2011] [Accepted: 07/13/2011] [Indexed: 05/31/2023]
Abstract
A new hydrogen-bonded pseudo-dimer, [Mn(III)L1(CH(3)CH(2)OH)](2)(ClO(4)) (1) (L1 = N,N'-bis(2-hydroxy-1-naphthalidenato)-1,2-diaminopropane) has been synthesized and characterized by UV-vis, IR, elemental analysis and crystal structure analysis. The single crystal X-ray diffraction reveals that the structure affords an elongated octahedral MnN(2)O(4) coordination environment, geometry with the four donor atoms of the tetradentate Schiff base in the equatorial plane and with two ethanol molecule in axial positions with Mn-O = 2.265(2) and 2.266(2) Å.
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Affiliation(s)
- Elif Gungor
- Department of Physics, Faculty of Science and Art, Balikesir University, 10145, Balıkesir, Turkey
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Leovac VM, Bogdanović GA, Jovanović LS, Joksović L, Marković V, Joksović MD, Denčić SM, Isaković A, Marković I, Heinemann FW, Trifunović S, Đalović I. Synthesis, characterization and antitumor activity of polymeric copper(II) complexes with thiosemicarbazones of 3-methyl-5-oxo-1-phenyl-3-pyrazolin-4-carboxaldehyde and 5-oxo-3-phenyl-3-pyrazolin-4-carboxaldehyde. J Inorg Biochem 2011; 105:1413-21. [PMID: 21955843 DOI: 10.1016/j.jinorgbio.2011.07.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 07/25/2011] [Accepted: 07/26/2011] [Indexed: 10/17/2022]
Abstract
New polymeric copper(II) complexes with two tridentate ONS thiosemicarbazone ligands containing substituted pyrazolone moiety were synthesized and characterized by means of spectroscopic, electrochemical and crystallographic techniques. While both ligands exist as different tautomers in the solid state and DMSO-d(6) solution, Cu(II) ion coordinates the ligands from the same tautomeric form with square-pyramidal geometry around each Cu atom. In the crystal structures, the copper(II) complex cation forms polymeric chains {[Cu(L)Cl](+)}(n) with a bridging chlorine atom. One of the complexes was found to have a significantly higher cytotoxic potential in comparison with cisplatin in inhibition of several cell lines (HL60, REH, C6, L929 and B16). The results obtained on the basis of flow cytometry indicated that apoptosis could be possible mechanism of cell death.
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Affiliation(s)
- Vukadin M Leovac
- Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Trg D.Obradovića 3, 21000 Novi Sad, Serbia.
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Marković V, Erić S, Stanojković T, Gligorijević N, Aranđelović S, Todorović N, Trifunović S, Manojlović N, Jelić R, Joksović MD. Antiproliferative activity and QSAR studies of a series of new 4-aminomethylidene derivatives of some pyrazol-5-ones. Bioorg Med Chem Lett 2011; 21:4416-21. [PMID: 21733686 DOI: 10.1016/j.bmcl.2011.06.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 06/06/2011] [Accepted: 06/08/2011] [Indexed: 10/18/2022]
Abstract
Twenty five 4-aminomethylidene derivatives obtained from 3-phenyl-2-pyrazolin-5-one and 1,3-diphenyl-2-pyrazolin-5-one were synthesized and tested for their antiproliferative activity against human breast cancer MDA-MB-361 and MDA-MB-453 cell lines. The compounds derived from 1,3-diphenyl-2-pyrazolin-5-one exhibited the most remarkable activity in the treatment of both cell lines. In vitro antiproliferative activities were accompanied by an important apoptotic fraction of both cell lines; also, compounds inhibited key endothelial cell functions implicated in invasion and angiogenesis. QSAR methods were performed in order to analyze the influence of structural features of the compounds investigated on the antiproliferative potential on MDA-MB-361 and MDA-MB-453 cancer cells. One-parameter heuristic analysis was performed and different whole molecule and fragmental descriptors were considered for rationalization of mechanism of interaction of these compounds with active place of hypothetical target included in tumorigenesis.
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Affiliation(s)
- Violeta Marković
- Faculty of Sciences, Department of Chemistry, University of Kragujevac, Kragujevac, Serbia
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Surati KR. Synthesis, spectroscopy and biological investigations of manganese(III) Schiff base complexes derived from heterocyclic β-diketone with various primary amine and 2,2'-bipyridyl. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:272-277. [PMID: 21458364 DOI: 10.1016/j.saa.2011.03.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Revised: 12/21/2010] [Accepted: 03/07/2011] [Indexed: 05/30/2023]
Abstract
The mixed ligand mononuclear complex [Mn(bipy)(HPMFP)(OAc)]ClO(4) was synthesized by reaction of Mn(OAc)(3)·2H(2)O with HPMFP and 2,2'-bipyridyl. The corresponding Schiff base complexes were prepared by condensation of [Mn(bipy)(HPMFP)(OAc)]ClO(4) with ethylenediamine, ethanolamine and glycine (where HPMFP=1-phenyl-3methyl-4-formyl-2-pyrazolin-5one, bipy=2,2'-bipyridyl). All the compounds have been characterized by elemental analysis, magnetic susceptibility, conductometry measurements and (1)H and (13)C NMR, FT-IR, mass spectrometry. Electronic spectral and magnetic susceptibility measurements indicate square pyramidal geometry around manganese(III) ion. The thermal stabilities, activation energy E*, entropy change ΔS*, enthalpy change ΔH* and heat capacity of thermal degradation for these complexes were determined by TGA and DSC. The in vitro antibacterial and antifungal activity of four coordination compounds and ligand HPMFP were investigated. In vitro activates of Bacillus subtillis (MTCC-619), Staphylococcus aureus (MTCC-96), Escherichia coli (MTCC-722) and Klebsiella pneumonia (MTCC-109) bacteria and the fungus Candida albicans (ATCC-90028) were determined. All the compounds showed good antimicrobial activity. The antimicrobial activities increased as formation of Schiff base.
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Affiliation(s)
- Kiran R Surati
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat, India.
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Bhattacharjee CR, Goswami P, Pramanik HAR, Paul PC, Mondal P. Reactivity of tris(acetylacetonato) iron(III) with tridentate [ONO] donor Schiff base as an access to newer mixed-ligand iron(III) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:1408-1415. [PMID: 21345718 DOI: 10.1016/j.saa.2011.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 01/11/2011] [Accepted: 01/17/2011] [Indexed: 05/30/2023]
Abstract
Two new mixed-ligand iron(III) complexes, [Fe(L(n))(acac)(C(2)H(5)OH)] incorporating coordinated ethanol from the reaction solvent were accessed from the reaction of [Fe(acac)(3)] with [ONO] donor dibasic tridentate unsymmetrical Schiff base ligands derived from condensation of 2-hydroxy-1-napthaldehyde with 2-aminophenol (H(2)L(1)) or 2-aminobenzoic acid (H(2)L(2)). The thermal study (TGA-DTA) provided evidence for weakly bound ethanol which is readily substituted by neutral N-donor molecule imidazole, benzimidazole or pyridine to produce an array of newer complexes, [Fe(L(n))(acac)X] (n=1, 2; X=Im, Bim, Py). The compounds were characterized by elemental analyses, FT-IR, UV-vis, solution electrical conductivity, FAB mass, (1)H and (13)C NMR spectroscopy. Room temperature magnetic susceptibility measurements (μ(eff)∼5.8 B.M.) are consistent with spin-free octahedral iron(III) complexes. Cyclic voltammetry of ethanol complexes revealed a quasi-reversible one electron redox response (ΔE(p)>100 mV) for the Fe(III)/Fe(II) couple. Low half wave redox potential (E(1/2)) values suggested easy redox susceptibility. The ground state geometries of the ethanol and imidazole complexes have been ascertained to be distorted octahedral by density functional theory using DMol3 program at BLYP/DNP level.
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Vyas KM, Shah VK, Jadeja R. Synthesis and characterization of Ni(II) complexes of O,N-donor Schiff bases derived from acyl pyrazolone analogues. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.562290] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Komal M. Vyas
- a Department of Chemistry, Faculty of Science , The Maharaja Sayajirao University of Baroda , Vadodara-390 002, Gujarat, India
| | - Vrunda K. Shah
- a Department of Chemistry, Faculty of Science , The Maharaja Sayajirao University of Baroda , Vadodara-390 002, Gujarat, India
| | - R.N. Jadeja
- a Department of Chemistry, Faculty of Science , The Maharaja Sayajirao University of Baroda , Vadodara-390 002, Gujarat, India
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Vyas KM, Jadeja R, Gupta VK, Surati K. Synthesis, characterization and crystal structure of some bidentate heterocyclic Schiff base ligands of 4-toluoyl pyrazolones and its mononuclear Cu(II) complexes. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.01.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Marković V, Erić S, Juranić ZD, Stanojković T, Joksović L, Ranković B, Kosanić M, Joksović MD. Synthesis, antitumor activity and QSAR studies of some 4-aminomethylidene derivatives of edaravone. Bioorg Chem 2011; 39:18-27. [DOI: 10.1016/j.bioorg.2010.10.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 10/21/2010] [Accepted: 10/21/2010] [Indexed: 11/26/2022]
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Thaker B, Barvalia R. Synthesis, spectral, and thermal studies of oxomolybdenum(V) Schiff-base complexes derived from heterocyclic β-diketone. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.483767] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- B.T. Thaker
- a Department of Chemistry , Veer Narmad South Gujarat University , Surat 395007, Gujarat, India
| | - R.S. Barvalia
- a Department of Chemistry , Veer Narmad South Gujarat University , Surat 395007, Gujarat, India
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Modi CK, Jani DH, Patel HS, Pandya HM. Novel Fe (III) heterochelates: synthesis, structural features and fluorescence studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:1321-1328. [PMID: 20133183 DOI: 10.1016/j.saa.2009.12.076] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 12/19/2009] [Accepted: 12/31/2009] [Indexed: 05/28/2023]
Abstract
Fluorescence properties of five 4-acyl pyrazolone based hydrazides (H(2)SB(n)) and their Fe (III) heterochelates of the type [Fe(SB(n))(L)(H(2)O)].mH(2)O [H(2)SB(n)=nicotinic acid [1-(3-methyl-5-oxo-1-phenyl-4,5-di hydro-1H-pyrazol-4yl)-acylidene]-hydrazide; where acyl=-CH(3), m=4 (H(2)SB(1)); -C(6)H(5), m=2 (H(2)SB(2)); -CH(2)-CH(3), m=3 (H(2)SB(3)); -CH(2)-CH(2)-CH(3), m=1.5 (H(2)SB(4)); -CH(2)-C(6)H(5), m=1.5 (H(2)SB(5)) and HL=1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid] were studied at room temperature. The fluorescence spectra of heterochelates show red shift, which may be due to the chelation by the ligands to the metal ion. It enhances ligand ability to accept electrons and decreases the electron transition energy. The kinetic parameters such as order of reaction (n), energy of activation (E(a)), entropy (S*), pre-exponential factor (A), enthalpy (H*) and Gibbs free energy (G*) have been reported.
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Affiliation(s)
- C K Modi
- Department of Chemistry, Bhavnagar University, Old Campus, Bhavnagar 364 002, Gujarat, India.
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Surati KR, Thaker BT. Synthesis, spectral, crystallography and thermal investigations of novel Schiff base complexes of manganese (III) derived from heterocyclic beta-diketone with aromatic and aliphatic diamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:235-242. [PMID: 19931485 DOI: 10.1016/j.saa.2009.10.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Revised: 10/07/2009] [Accepted: 10/13/2009] [Indexed: 05/28/2023]
Abstract
The Schiff base tetradentate ligands N,N-bis-(3,5-dimethyl-1-p-tolyl-1H-pyrazol-4-ylmethylene)-ethane-1,2-diamine (H(2)L(1)), N,N-bis-(3,5-dimethyl-1-p-sulfonyl-1H-pyrazol-4-ylmethylene)-ethane-1,2-diamine (H(2)L(2)), N,N-bis-(3,5-dimethyl-1-p-tolyl-1H-pyrazol-4-ylmethylene)-benzene-1,2-diamine (H(2)L(3)) and N,N-bis-(3,5-dimethyl-1-p-sulfonyl-1H-pyrazol-4-ylmethylene)-benzene-1,2-diamine (H(2)L(4)) were prepared from the reaction between 5-oxo-3-methyl-1-p-tolyl-1H-pyrazole-4-carbaldehyde or 4-(4-formyl-5-oxo-3-methyl-pyrazol-1-yl)-benzenesulfonic acid and o-phenylenediamine or ethylenediamine. And these are characterized by elemental analysis, FT-IR, (1)H NMR and GC-MS. The corresponding Schiff base complexes of Mn(III) were prepared by condensation of [Mn(3)(mu(3)-O)(OAc)(6)(H(2)O)(3)].3H(2)O with ligands H(2)L(1), H(2)L(2), H(2)L(3) and H(2)L(4). All these complexes have been characterized by elemental analysis, magnetic susceptibility, X-ray crystallography, conductometry measurement, FT-IR, electronic spectra and mass (FAB) spectrometry. Thermal behaviour of the complexes has been studied by TGA, DTA and DSC. Electronic spectra and magnetic susceptibility measurements indicate octahedral stereochemistry of manganese (III) complexes, while non-electrolytic behaviour complexes indicate the absence of counter ion.
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Affiliation(s)
- Kiran R Surati
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat, India.
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Thaker BT, Barvalia RS. Ligating behaviour of Schiff base ligands derived from heterocyclic beta-diketone and ethanol or propanol amine with oxovanadium (IV) metal ion. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 74:1016-1024. [PMID: 19800287 DOI: 10.1016/j.saa.2009.08.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2009] [Accepted: 08/19/2009] [Indexed: 05/28/2023]
Abstract
Synthesis and evaluation of six new oxovanadium (IV) complexes, formed by the interaction of vanadyl sulphate pentahydrate and the Schiff base, viz.; (HL(1))-(HL(3)) and (HL(4))-(HL(6)) such as 5-hydroxy-3-methyl-1(2-chloro)phenyl-1H-pyrazolone-4-carbaldehyde (I), 5-hydroxy-3-methyl-1(3-chloro)phenyl-1H-pyrazolone-4-carbaldehyde (II) and 5-hydroxy-3-methyl-1(3-sulphoamido)phenyl-1H-pyrazolone-4-carbaldehyde (III) with ethanol amine and propanol amine, respectively, in aqueous ethanol medium. The ligands and their Schiff base ligands have been characterized by elemental analyses, IR and (1)H NMR. The resulting complexes have been characterized by elemental analyses, IR, (1)H NMR, mass, electronic, electron spin resonance spectra, magnetic susceptibility measurement, molar conductance and thermal studies. The IR spectral data suggest that the ligand behaves as a dibasic bidentate with ON donor sequence towards metal ion. The molar conductivity data show them to be non-electrolytes. From the electronic, magnetic and ESR spectral data suggest that all the oxovanadium (IV) complexes have distorted octahedral geometry.
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Affiliation(s)
- B T Thaker
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India.
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37
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Interplay of thermochemistry and Structural Chemistry, the journal (volume 18, 2007) and the discipline. Struct Chem 2008. [DOI: 10.1007/s11224-008-9380-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Modi CK, Patel IA, Thaker BT. Manganese(III) Schiff-base complexes involving heterocyclic β-diketone and diethylene triamine. J COORD CHEM 2008. [DOI: 10.1080/00958970802007688] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- C. K. Modi
- a Department of Chemistry , Sardar Patel University , Vallabh Vidyanagar–388 120, Gujarat, India
| | - I. A. Patel
- b Department of Chemistry , Veer Narmad South Gujarat University , Surat–395 007, Gujarat, India
| | - B. T. Thaker
- b Department of Chemistry , Veer Narmad South Gujarat University , Surat–395 007, Gujarat, India
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