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Gokulnath G, Manikandan R, Anitha P, Umarani C. Synthesis, characterization, in vitro antimicrobial and anticancer activity of metal(II) complexes of Schiff base-derived from 3-formyl-2-mercaptoquinoline and thiosemicarbazide. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1966630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ganesan Gokulnath
- Department of Chemistry, Government Arts College (Autonomous), Salem, Tamil Nadu, India
| | - Rajendran Manikandan
- Department of Chemistry, Loyola College of Arts and Science, Mettala, Namakkal, Tamil Nadu, India
| | - Panneerselvam Anitha
- Department of Chemistry, Government College of Engineering, Salem, Tamil Nadu, India
| | - Chinnusamy Umarani
- Department of Chemistry, Government Arts College (Autonomous), Salem, Tamil Nadu, India
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Kalarani R, Sankarganesh M, Kumar GV, Kalanithi M. Synthesis, spectral, DFT calculation, sensor, antimicrobial and DNA binding studies of Co(II), Cu(II) and Zn(II) metal complexes with 2-amino benzimidazole Schiff base. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127725] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Jayamani A, Sethupathi M, Ojwach SO, Sengottuvelan N. Investigation on biomolecular interactions of nickel(II) complexes with monoanionic bidentate ligands. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Mohamed GG, El-sherif AA, Saad MA, El-sawy SE, Morgan SM. Mixed-ligand complex formation of tenoxicam drug with some transition metal ions in presence of valine: Synthesis, characterization, molecular docking, potentiometric and evaluation of the humeral immune response of calves. J Mol Liq 2016; 223:1311-32. [DOI: 10.1016/j.molliq.2016.09.065] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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El-Sonbati A, El-Bindary A, Mohamed G, Morgan S, Hassan W, Elkholy A. Geometrical structures, thermal properties and antimicrobial activity studies of azodye complexes. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.02.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Vijayaraj A, Prabu R, Suresh R, Mathivanan N, Narayanan V. Synthesis of New Acyclic Schiff Base Oxovanadium(IV) Complexes and Their Electrochemical, Catecholase, and Antimicrobial Studies of Minimum Inhibitory Concentration. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/15533174.2015.1031040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. Vijayaraj
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - R. Prabu
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - R. Suresh
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - N. Mathivanan
- Centre for Advanced Studies in Botany, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - V. Narayanan
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
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Pratumwieng R, Soikum C, Chaveerach P, Chaveerach U. Binding studies of ( N -(methylpyridin-2-yl)-amidino- O -methylurea)copper(II) complexes to four nitrogenous bases and 5′-GMP. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.08.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Jayamani A, Sengottuvelan N, Kang SK, Kim YI. Studies on nucleic acid/protein interaction, molecular docking and antimicrobial properties of mononuclear nickel(II) complexes of piperazine based Schiff base. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.08.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Devi RB, Devi SP, Singh RB, Singh RH, Swu T, Devi WR, Singh CHB. Synthesis, spectroscopic, and biological studies on copper(II) complexes containing equatorial–apical chloride bridges: crystal structure of [Cu2(μ-Cl)2(O-2-butoxyethylpyridine-2-carboximidate)2Cl2]. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.902449] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- R.K. Bindiya Devi
- Department of Chemistry, Manipur University Canchipur, Imphal, India
| | - S. Pramodini Devi
- Department of Chemistry, Manipur University Canchipur, Imphal, India
| | - R.K. Bhubon Singh
- Department of Chemistry, Manipur University Canchipur, Imphal, India
| | | | - Toka Swu
- Department of Chemistry, Pondicherry University, Puducherry, India
| | - W. Radhapiyari Devi
- Department of Biotechnology, Institute of Bioresources and Sustainable Development, Imphal, India
| | - CH. Brajakishore Singh
- Department of Biotechnology, Institute of Bioresources and Sustainable Development, Imphal, India
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Sundaravadivel E, Vedavalli S, Kandaswamy M, Varghese B, Madankumar P. DNA/BSA binding, DNA cleavage and electrochemical properties of new multidentate copper(ii) complexes. RSC Adv 2014. [DOI: 10.1039/c4ra03554b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new series of multidentate copper(ii) complexes [Cu(L1−5)](ClO4) (1–5) were synthesized and characterized for their DNA/BSA binding, DNA cleavage, cytotoxic properties and antimicrobial activities.
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Affiliation(s)
| | - Sairaj Vedavalli
- Department of Inorganic Chemistry
- University of Madras
- Chennai 600 025, India
| | | | - Babu Varghese
- Sophisticated Analytical Instruments Facility
- Indian Institute of Technology
- Chennai 600 036, India
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Sundaravadivel E, Muthusamy K, Varghese B. Synthesis, characterization and electrochemical behavior of new acyclic mono and binuclear copper (II) complexes: DNA binding and cleavage studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Chityala VK, Sathish Kumar K, Subhashini N, Raghavaiah P. Synthesis, crystal structure, spectroscopic, and biological studies on Cu(II) complexes of N,O donor dimethyl isoxazole Schiff bases. J COORD CHEM 2013. [DOI: 10.1080/00958972.2012.755174] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - K. Sathish Kumar
- a Department of Chemistry , Osmania University , Hyderabad , India
| | - N.J.P. Subhashini
- b Department of Chemistry, University College of Technology , Osmania University , Hyderabad , India
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Pramodini Devi S, Bindiya Devi R, Shantibala Devi N, Jaideva Singh L, Hemakumar Singh R. Structural and spectroscopic investigations on bis(1-amidino-O-2-alkoxyethylurea) copper(II) perchlorate complexes (alkoxy=methoxy, ethoxy or butoxy). Polyhedron 2012. [DOI: 10.1016/j.poly.2012.08.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Onder A, Turkyilmaz M, Baran Y. Synthesis, spectroscopic, magnetic and thermal properties of copper(II), nickel(II) and iron(II) complexes with some tetradentate ligands: Solvatochromism of iron(II)–L2. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Soliman AA, Mohamed GG, Hosny WM, El-Mawgood MA. Synthesis, Spectroscopic and Thermal Characterization of New Sulfasalazine Metal Complexes. ACTA ACUST UNITED AC 2012. [DOI: 10.1081/sim-200067043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ahmed A. Soliman
- a Department of Chemistry, Faculty of Science , UAE University , Al-Ain , UAE
| | - Gehad G. Mohamed
- b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt
| | - Wafaa M. Hosny
- b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt
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Sain S, Saha R, Mostafa G, Fleck M, Bandyopadhyay D. Synthesis and crystal structure of three new copper(II) complexes with a tridentate amine and its Schiff bases. Polyhedron 2012; 31:82-8. [DOI: 10.1016/j.poly.2011.08.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Kalanithi M, Rajarajan M, Tharmaraj P. Synthesis, spectral, and biological studies of transition metal chelates of N-[1-(3-aminopropyl)imidazole]salicylaldimine. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.557432] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. Kalanithi
- a Department of Chemistry , Jayaraj Annapackiam College for Women , Periyakulam – 625601 , India
| | - M. Rajarajan
- b Department of Chemistry , Cardamom Planters Association College , Bodinayakkanur , India
| | - P. Tharmaraj
- c Department of Chemistry , Thiagarajar College , Madurai – 625009 , India
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Omar MM, Mohamed GG, Badawy MA, Nassar MM, Kamel AB. Synthesis, Spectroscopic, and Thermal Characterization of Thiazole Metal Complexes: Biological Activity Studies. ACTA ACUST UNITED AC 2010. [DOI: 10.1080/15533174.2010.509300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. M. Omar
- a Chemistry Department, Faculty of Science , Cairo University , Giza, Egypt
| | - G. G. Mohamed
- a Chemistry Department, Faculty of Science , Cairo University , Giza, Egypt
| | - M. A. Badawy
- a Chemistry Department, Faculty of Science , Cairo University , Giza, Egypt
| | - M. M. Nassar
- b Insecticides Department, Faculty of Science , Cairo University , Giza, Egypt
| | - A. B. Kamel
- a Chemistry Department, Faculty of Science , Cairo University , Giza, Egypt
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Mohamed GG, Omar MM, Ibrahim AA. Preparation, characterization and biological activity of novel metal-NNNN donor Schiff base complexes. Spectrochim Acta A Mol Biomol Spectrosc 2010; 75:678-685. [PMID: 20044308 DOI: 10.1016/j.saa.2009.11.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2009] [Revised: 11/14/2009] [Accepted: 11/17/2009] [Indexed: 05/28/2023]
Abstract
Novel Schiff base (H(2)L) ligand is prepared via condensation of benzil and triethylenetetraamine. The ligand is characterized based on elemental analysis, mass, IR and (1)H NMR spectra. Metal complexes are reported and characterized based on elemental analyses, IR, (1)H NMR, solid reflectance, magnetic moment, molar conductance, and thermal analyses (TG, DTG and DTA). 1:1 [M]:[H(2)L] complexes are found from the elemental analyses data having the formulae [M(H(2)L)Cl(2)]xyH(2)O (M=Mn(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II)), [Fe(H(2)L)Cl(2)]ClxH(2)O, [Th(H(2)L)Cl(2)]Cl(2)x3H(2)O and [UO(2)(H(2)L)](CH(3)COO)(2)x2H(2)O. The metal chelates are found to be non-electrolytes except Fe(III), Th(IV) and UO(2)(II) complexes are electrolytes. IR spectra show that H(2)L is coordinated to the metal ions in a neutral tetradentate manner with 4Ns donor sites of the two azomethine N and two NH groups. The geometrical structures of these complexes are found to be octahedral. The thermal behaviour of these chelates is studied where the hydrated complexes lose water molecules of hydration in the first step followed immediately by decomposition of the anions and ligand molecules in the subsequent steps. The activation thermodynamic parameters are calculated using Coats-Redfern method. The ligand (H(2)L), in comparison to its metal complexes, is screened for its antibacterial activity. The activity data show that the metal complexes have antibacterial activity more than the parent Schiff base ligand and cefepime standard against one or more bacterial species.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
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Mohamed GG, Omar M, Ibrahim AA. Biological activity studies on metal complexes of novel tridentate Schiff base ligand. Spectroscopic and thermal characterization. Eur J Med Chem 2009; 44:4801-12. [DOI: 10.1016/j.ejmech.2009.07.028] [Citation(s) in RCA: 127] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Revised: 06/27/2009] [Accepted: 07/23/2009] [Indexed: 11/30/2022]
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Mohamed GG, Abdallah SM, Nassar M, Zayed M. Metal complexes of gliclazide: Preparation, spectroscopic and thermal characterization. Biological potential study of sulphonylurea gliclazide on the house fly, Musca domestica (Diptera – Muscidae). ARAB J CHEM 2009. [DOI: 10.1016/j.arabjc.2009.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Mandal S, Rout AK, Pilet G, Bandyopadhyay D. Synthesis, crystal structure and characterization of two new copper(II) complexes of Schiff bases derived from furfurylamine. TRANSIT METAL CHEM 2009. [DOI: 10.1007/s11243-009-9253-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Omar MM, Mohamed GG, Ibrahim AA. Spectroscopic characterization of metal complexes of novel Schiff base. Synthesis, thermal and biological activity studies. Spectrochim Acta A Mol Biomol Spectrosc 2009; 73:358-69. [PMID: 19362050 DOI: 10.1016/j.saa.2009.02.043] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2008] [Revised: 02/17/2009] [Accepted: 02/20/2009] [Indexed: 05/23/2023]
Abstract
Novel Schiff base (HL) ligand is prepared via condensation of 4-aminoantipyrine and 2-aminobenzoic acid. The ligand is characterized based on elemental analysis, mass, IR and (1)H NMR spectra. Metal complexes are reported and characterized based on elemental analyses, IR, (1)H NMR, solid reflectance, magnetic moment, molar conductance and thermal analyses (TGA, DrTGA and DTA). The molar conductance data reveal that all the metal chelates are non-electrolytes. IR spectra show that HL is coordinated to the metal ions in a uninegatively tridentate manner with NNO donor sites of the azomethine N, amino N and deprotonated caroxylic-O. From the magnetic and solid reflectance spectra, it is found that the geometrical structures of these complexes are octahedral. The thermal behaviour of these chelates shows that the hydrated complexes losses water molecules of hydration in the first step followed immediately by decomposition of the anions and ligand molecules in the subsequent steps. The activation thermodynamic parameters, such as, E*, DeltaH*, DeltaS* and DeltaG* are calculated from the DrTG curves using Coats-Redfern method. The synthesized ligands, in comparison to their metal complexes also were screened for their antibacterial activity against bacterial species, Escherichia Coli, Pseudomonas aeruginosa, Staphylococcus Pyogones and Fungi (Candida). The activity data show that the metal complexes to be more potent/antibacterial than the parent Shciff base ligand against one or more bacterial species.
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Affiliation(s)
- M M Omar
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
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Mohamed GG, Sharaby CM. Metal complexes of Schiff base derived from sulphametrole and o-vanilin. Synthesis, spectral, thermal characterization and biological activity. Spectrochim Acta A Mol Biomol Spectrosc 2007; 66:949-58. [PMID: 16891151 DOI: 10.1016/j.saa.2006.04.033] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2006] [Accepted: 04/17/2006] [Indexed: 05/11/2023]
Abstract
Metal complexes of Schiff base derived from condensation of o-vanilin (3-methoxysalicylaldehyde) and sulfametrole [N(1)-(4-methoxy-1,2,5-thiadiazole-3-yl)sulfanilamide] (H2L) are reported and characterized based on elemental analyses, IR, 1H NMR, solid reflectance, magnetic moment, molar conductance, mass spectra, UV-vis and thermal analysis (TGA). From the elemental analyses data, the complexes were proposed to have the general formulae [M2X3(HL)(H2O)5].yH2O (where M=Mn(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II), X=Cl, y=0-3); [Fe2Cl5(HL)(H2O)3].2H2O; [(FeSO4)2(H2L)(H2O)4] and [(UO2)2(NO3)3(HL)(H2O)].2H2O. The molar conductance data reveal that all the metal chelates were non-electrolytes. The IR spectra show that, H2L is coordinated to the metal ions in a tetradentate manner with ON and NO donor sites of the azomethine-N, phenolic-OH, enolic sulphonamide-OH and thiadiazole-N. From the magnetic and solid reflectance spectra, it is found that the geometrical structures of these complexes are octahedral. The thermal behaviour of these chelates shows that the hydrated complexes losses water molecules of hydration in the first step followed immediately by decomposition of the anions and ligand molecules in the subsequent steps. The activation thermodynamic parameters, such as, E*, DeltaH*, DeltaS* and DeltaG* are calculated from the DrTG curves using Coats-Redfern method. The synthesized ligand, in comparison to their metal complexes also were screened for their antibacterial activity against bacterial species, Escherichia coli, Salmonella typhi, Bacillus subtillus, Staphylococcus aureus and Fungi (Aspergillus terreus and Aspergillus flavus). The activity data show that the metal complexes to be more potent/antimicrobial than the parent Shciff base ligand against one or more microbial species.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Mohamed GG, Omar MM, Hindy AMM. Synthesis, characterization and biological activity of some transition metals with Schiff base derived from 2-thiophene carboxaldehyde and aminobenzoic acid. Spectrochim Acta A Mol Biomol Spectrosc 2005; 62:1140-50. [PMID: 15955728 DOI: 10.1016/j.saa.2005.03.031] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2005] [Accepted: 03/16/2005] [Indexed: 05/03/2023]
Abstract
Metal complexes of Schiff base derived from 2-thiophene carboxaldehyde and 2-aminobenzoic acid (HL) are reported and characterized based on elemental analyses, IR, 1H NMR, solid reflectance, magnetic moment, molar conductance and thermal analysis (TGA). The ligand dissociation as well as the metal-ligand stability constants were calculated pH metrically at 25 degrees C and ionic strength mu=0.1 (1M NaCl). The complexes are found to have the formulae [M(HL)2](X)n.yH2O (where M=Fe(III) (X=Cl, n=3, y=3), Co(II) (X=Cl, n=2, y=1.5), Ni(II) (X=Cl, n=2, y=1) and UO2(II) (X=NO3, n=2, y=0)) and [M(L)2] (where M=Cu(II) (X=Cl) and Zn(II) (X=AcO)). The molar conductance data reveal that Fe(III) and Co(II), Ni(II) and UO2(II) chelates are ionic in nature and are of the type 3:1 and 2:1 electrolytes, respectively, while Cu(II) and Zn(II) complexes are non-electrolytes. IR spectra show that HL is coordinated to the metal ions in a terdentate manner with ONS donor sites of the carboxylate O, azomethine N and thiophene S. From the magnetic and solid reflectance spectra, it is found that the geometrical structure of these complexes are octahedral. The thermal behaviour of these chelates shows that the hydrated complexes losses water molecules of hydration in the first step followed immediately by decomposition of the anions and ligand molecules in the subsequent steps. The activation thermodynamic parameters, such as, E*, DeltaH*, DeltaS* and DeltaG* are calculated from the DrTG curves using Coats-Redfern method. The synthesized ligands, in comparison to their metal complexes also were screened for their antibacterial activity against bacterial species, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus pyogones and Fungi (Candida). The activity data show that the metal complexes to be more potent/antibacterial than the parent Schiff base ligand against one or more bacterial species.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Thirumavalavan M, Akilan P, Kandaswamy M. Lateral macrobicyclic compartmental mono and binuclear nickel(II) complexes derived from phenolate ligands: Synthesis, spectral, electrochemical and kinetic studies. Polyhedron 2005; 24:1781-91. [DOI: 10.1016/j.poly.2005.05.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mohamed GG, El-Gamel NEA. Synthesis, investigation and spectroscopic characterization of piroxicam ternary complexes of Fe(II), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) with glycine and DL-phenylalanine. Spectrochim Acta A Mol Biomol Spectrosc 2004; 60:3141-3154. [PMID: 15477157 DOI: 10.1016/j.saa.2004.01.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2003] [Accepted: 01/27/2004] [Indexed: 05/24/2023]
Abstract
The ternary piroxicam (Pir; 4-hydroxy-2-methyl-N-(2-pyridyl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide) complexes of Fe(II), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) with various amino acids (AA) such as glycine (Gly) or DL-phenylalanine (PhA) were prepared and characterized by elemental analyses, molar conductance, IR, UV-Vis, magnetic moment, diffuse reflectance and X-ray powder diffraction. The UV-Vis spectra of Pir and the effect of metal chelation on the different interligand transitions are discussed in detailed manner. IR and UV-Vis spectra confirm that Pir behaves as a neutral bidentate ligand coordinated to the metal ions via the pyridine-N and carbonyl group of the amide moiety. Gly molecule acted as a uninegatively monodentate ligand and coordinate to the metal ions through its carboxylic group, in addition PhA acted as a uninegatively bidentate ligand and coordinate to the metal ions through its carboxylic and amino groups. All the chelates have octahedral geometrical structures while Cu(II)- and Zn(II)-ternary chelates with PhA have square planar geometrical structures. The molar conductance data reveal that most of these chelates are non electrolytes, while Fe(III)-Pir-Gly, Co(II)-, Ni(II)-, Cu(II)- and Zn(II)-Pir-PhA chelates were 1:1 electrolytes. X-ray powder diffraction is used as a new tool to estimate the crystallinity of chelates as well as to elucidate their geometrical structures.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
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Saravanakumar D, Sengottuvelan N, Priyadarshni G, Kandaswamy M, Okawa H. Synthesis of unsymmetrical ‘end-off’ phenoxo and oximinato di bridged copper(II) and nickel(II) complexes: spectral, electrochemical and magnetic properties. Polyhedron 2004. [DOI: 10.1016/j.poly.2003.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Thirumavalavan M, Akilan P, Kandaswamy M. Synthesis of new macrobicyclic tricompartmental ligands and site preference of metal ion: structural and electrochemical properties of mononuclear copper(II) complexes. INORG CHEM COMMUN 2002; 5:422-6. [DOI: 10.1016/s1387-7003(02)00437-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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