scholarly journals Complexes of Pyrimidine Thiones: Mechanochemical Synthesis and Biological Evaluation

2020 ◽  
Vol 32 (10) ◽  
pp. 2594-2600
Author(s):  
Pooja Sethi ◽  
Rajshree Khare ◽  
Renuka Choudhary
Keyword(s):  
Magnetic Susceptibility ◽  
Thermogravimetric Analysis ◽  
Metal Complexes ◽  
Mechanochemical Synthesis ◽  
Far Infrared ◽  
Biological Evaluation ◽  
Spectral Moment ◽  
Mass Spectral ◽  
Infrared Spectral ◽  
Synthesis And Biological Evaluation

A new series of metal complexes with 1-(2-methylphenyl)-4,4,6-trimethyl pyrimidine-2-thione (2-HL1) and 1-(4-methylphenyl)-4,4,6-trimethyl pyrimidine-2-thione (4-HL2) ligands, [M(mppt)2(H2O)n] (M(II) = Cu, Mn, Co; n = 2 and M(II) = Ni, Zn; n = 0) have been synthesized using mechanochemical protocol. The complexes have been framed as [M(mppt)2(H2O)n] due to 1:2 (metal:ligand) nature of these metal complexs. Structures have been further confirmed on the basis of elemental analysis, Magnetic susceptibility measurements, electronic, infrared, far infrared, proton NMR, Mass spectral moment and thermogravimetric analysis studies. The infrared spectral data suggested that ligand behaves as a bidentate, coordinating through – N (endocyclic) and – S (exocyclic) donor atoms. All the compounds have also been screened for antibacterial and DNA photocleavage potential. Ligands complexed with Mn and Ni metals have shown the effect of substitution on their biological potentials. It was found that substitution at 4th or para position makes the ligand and its metal complexes have better antibacterial and DNA photocleaving agents.

scholarly journals Synthesis and Biological Evaluation of New Hydrazone Derivatives of Quinoline and Their Cu(II) and Zn(II) Complexes againstMycobacterium tuberculosis

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Mustapha C. Mandewale ◽  
Bapu Thorat ◽  
Dnyaneshwar Shelke ◽  
Ramesh Yamgar
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Metal Complexes ◽  
Inhibitory Activity ◽  
Biological Properties ◽  
Biological Evaluation ◽  
Fluorescence Properties ◽  
Synthesis And Biological Evaluation ◽  
Derivatives Of

A new series of quinoline hydrazone derivatives and their metal complexes have been synthesized and their biological properties have been evaluated againstMycobacterium tuberculosis(H37 RV strain). Most of the newly synthesized compounds displayed 100% inhibitory activity at a concentration of 6.25–25 μg/mL, againstMycobacterium tuberculosis. Fluorescence properties of all the synthesized compounds have been studied.

scholarly journals Studies on Inclusion Complexes of β-Cyclodextrin with Some Metal Complexes of Isatinylsemicarbazone and Isatinylthiosemicarbazone

2020 ◽  
Vol 32 (12) ◽  
pp. 3197-3202
Author(s):  
Rajeev Kumar ◽  
Sanjay Kumar ◽  
Madhu Bala
Keyword(s):  
Magnetic Susceptibility ◽  
Metal Complexes ◽  
Inclusion Complexes ◽  
Analytical Data ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Tetrahedral Geometry ◽  
Solid States ◽  
Spectral Bands ◽  
Infrared Spectral

The complexes of Co(II), Ni(II), Zn(II) and Cd(II) with isatinylsemicarbazone (IstscabH) and isatinylthiosemicarbazone (IsttscabH) of composition ML2·2H2O [M = Co(II) or Ni(II) and LH = IstscabH or IsttscabH] and ML2 [M = Zn(II) or Cd(II) and LH = IstscabH or IsttscabH] have been synthesized and their antibacterial activity has been investigated. Their inclusion complexes with β-cyclodextrin (β-CD) having composition [ML2(β-CD)·2H2O] or M(C60H88N8O39S2)], [M = Co(II) or Ni(II) and LH = IstscabH or IsttscabH] and [ML2(β-CD) or M(C60H84N6O-37S2)], [M = Zn(II) or Cd(II) and LH = IstscabH or IsttscabH] have also been isolated in solid states. All the synthesized metal complexes have been characterized by analytical data, molar conductance, magnetic susceptibility, electronic and infrared spectral studies. The tetrahedral geometry for Zn(II) and Cd(II) and octahederal geometry for Co(II) and Ni(II) have been assigned on the basis of magnetic susceptibility, UV electronic transitions and IR spectral bands assignments. The structures are retained in inclusion products. A biological activity of Schiff bases, their metal complexes and inclusion products for bacteria Escherichia. coli, Bacillus subtilis and Staphylococcus aureus have been screened and activity explained.

scholarly journals Synthesis, Characterization and Biological Evaluation of Schiff Base Transition Metal Complexes Derived from 4-Nitrobenzene-1,2-diamine and 5-Chloroisatin

2020 ◽  
Vol 32 (9) ◽  
pp. 2324-2328
Author(s):  
NETRA PAL SINGH ◽  
KAUSHAL KUMAR ◽  
GAJENDRA KUMAR ◽  
ANUROOP KUMAR
Keyword(s):  
Schiff Base ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Magnetic Moments ◽  
Biological Evaluation ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Mass Spectral ◽  
Bacteria And Fungi

A series of transition metal complexes of the type [MLX2], where M = Mn(II), Fe(II), Co(II), Ni(II), X = Cl–/CH3COO– and L = Schiff base derived from 4-nitrobenzene-1,2-diamine and 5-chloroisatin have been synthesized and characterized by elemental analysis, molar conductance, IR, UV-visible, magnetic moments measurement, 1H & 13C NMR and mass spectral studies. On the basis of physico-chemical studies and spectral evaluation, an octahedral geometry have been proposed for all metal(II) complexes. The antimicrobial activity of ligand and its metal complexes have been additionally screened against bacteria and fungi. Metal(II) complexes show good activity as compared to ligand towards studied microorganisms and also metal complexes checked for their catalytic properties for benzoylation of phenol.

scholarly journals Synthesis and Biological Evaluation of Some Novel 1, 3, 5-Trisubstituted Pyrazolines

2010 ◽  
Vol 7 (1) ◽  
pp. 295-298 ◽  
Author(s):  
B. C. Revanasiddappa ◽  
R. Nagendra Rao ◽  
E. V. S. Subrahmanyam ◽  
D. Satyanarayana
Keyword(s):  
Antimicrobial Activity ◽  
Acetic Acid ◽  
Spectral Data ◽  
Glacial Acetic Acid ◽  
Biological Evaluation ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Synthesis And Biological Evaluation

A new series of chalcones (3a-j) were synthesized by condensation of simple aldehydes with substituted acetophenones in presence of alkali. The resulted chalcones upon cyclization in presence of glacial acetic acid with isoniazid (INH) will yields the title compounds (4a-j). The newly synthesized compounds were assigned on the basis of IR,1H NMR, and Mass spectral data. All the final compounds were evaluated for theirin vitroantimicrobial activity.

scholarly journals Spectroscopic and Biological Studies on Newly Synthesized Cobalt (II) and Nickel (II) Complexes with 2-Acetyl Coumarone Semicarbazone and 2-Acetyl Coumarone Thiosemicarbazone

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Sanjay Goel ◽  
Sulekh Chandra ◽  
Sudhanshu Dhar Dwivedi
Keyword(s):  
Magnetic Susceptibility ◽  
Metal Complexes ◽  
Antioxidant Activities ◽  
Molar Conductance ◽  
Metal Salts ◽  
Spectral Studies ◽  
Planar Geometry ◽  
Square Planar ◽  
Biological Studies ◽  
Infrared Spectral

Co(II) and Ni(II) complexes of general composition ML2X2(M = Co(II), Ni(II); X = Cl−,NO3 −) were synthesized by the condensation of metal salts with semicarbazone/thiosemicarbazone derived from 2-acetyl coumarone. The ligands and metal complexes were characterized by NMR, elemental analysis, molar conductance, magnetic susceptibility measurements, IR, and atomic absorption spectral studies. On the basis of electronic, molar conductance and infrared spectral studies, the complexes were found to have square planar geometry. The Schiff bases and their metal complexes were tested for their antibacterial and antioxidant activities.

scholarly journals Synthesis and Biological Evaluation of Some [1,2,4]Triazolo[4,3-a]quinoxaline Derivatives as Novel Anticonvulsant Agents

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Mohamed Alswah ◽  
Adel Ghiaty ◽  
Ahmed El-Morsy ◽  
Kamal El-Gamal
Keyword(s):  
Acetic Acid ◽  
Elemental Analysis ◽  
Acid Hydrazide ◽  
Biological Evaluation ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Quinoxaline Derivatives ◽  
Anticonvulsant Activities ◽  
Synthesis And Biological Evaluation

2-([1,2,4]Triazolo[4,3-a]quinoxalin-4-ylthio)acetic acid hydrazide (10) was used as a precursor for the syntheses of novel quinoxaline derivatives with potential anticonvulsant properties. The newly synthesized compounds have been characterized by IR, 1H NMR, and mass spectral data followed by elemental analysis. The anticonvulsant evaluation was carried out for eleven of the synthesized compounds using metrazol induced convulsions model and phenobarbitone sodium as a standard. Among this set of tested compounds, two of them (14, and 15b) showed the best anticonvulsant activities.

scholarly journals Synthesis, Characterization and Toxicity Evaluation of Cu(II), Mn(II), Co(II), Ni(II), Pd(II) Complexes with Ligand Derived from Hydrazinecarbothioamide

2018 ◽  
Vol 69 (11) ◽  
pp. 2959-2963 ◽  
Author(s):  
Elena Pahontu ◽  
Laura Ileana Socea ◽  
Stefania Felicia Barbuceanu ◽  
Diana Carolina Ilies ◽  
Mihaela Badea ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Magnetic Susceptibility ◽  
Metal Complexes ◽  
Daphnia Magna ◽  
Molar Conductivity ◽  
Spectral Studies ◽  
Toxicity Evaluation ◽  
Physico Chemical ◽  
Infrared Spectral ◽  
Chemical Techniques

New copper(II), manganese(II), cobalt(II), nickel(II) and palladium(II) complexes, [Cu(L)(X)(H2O)] [X= OAc- (1), Cl- (3), ClO4- (4)], [M(L)2(H2O)2] [M= Cu2+(2), Mn2+(5)], [M(L)(OAc)(H2O)] [M= Co2+(6), Pd2+(8)], [Ni(L)(OAc)] (7) were synthesized with 2-(5H-dibenzo [a,d][7] annulen-5-ylacetyl)-N-(4-chlorophenyl) hydrazinecarbothioamide (HL). All the metal complexes have been characterized by different physico-chemical techniques like molar conductivity, magnetic susceptibility measurements, electronic and infrared spectral studies, elemental and thermal analysis. The toxicity of newly synthesized compounds was evaluated using the Daphnia magna bioassay.

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