Synthesis and spectroscopic characterization of metal complexes with naphthofuran-2-carbohydrazide Schiff 's base

Shashidhar,; Shivakumar, Kilingaru I.; Reddy, P. Vithal; Halli, M. B.

doi:10.1080/00958970601112051

Cited by 13 publications

(5 citation statements)

References 17 publications

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“…The FT-IR spectrum of ligands L1 and L2 showed strong bands at 3354 and 3185 cm −1 due to asy (NH) and ] sy (NH) stretching vibrations, respectively, of secondary amide. Strong bands observed at 1670 and 1702 cm −1 in free ligands are assigned to ](C=O) of -CONH group which matches with the literature reports [22]. Medium to strong intense bands at 1606 and 1596 cm −1 in L1 and L2 were assigned to ](C=N) of the azomethine group [28].…”

Section: Characterization Of Ligands L1 and L2 The Ligands L1supporting

confidence: 75%

“…As a part of our ongoing study on benzofuran derivatives [6,7,[22][23][24], we report herein the synthesis, characterization, and antibacterial activity of (E)-7-Methoxy-N1-(2,4,5-trimethoxy benzylidene) benzofuran-2-carbohydrazide (L1) and (E)-N1-(2,6-dichloro benzylidene)-7-methoxy benzofuran-2-carbohydrazide (L2) and their metal complexes such as Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) as shown in Scheme 1.…”

Section: L2mentioning

confidence: 99%

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Synthesis, Characterization, and Antibacterial Activity of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) Complexes of Schiff's Base Type Ligands Containing Benzofuran Moiety

Reddy

Shankara²,

Krishana

et al. 2013

International Journal of Inorganic Chemistry

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Six new complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) with substituted benzofuran derivatives have been synthesized and characterized by elemental analysis, magnetic moments, conductance measurements, spectral characterization, and so forth. Elemental data coincide with the general formula MLC1n, where L = (E)-7-Methoxy-N1-(2,4,5-trimethoxy benzylidene) benzofuran-2-carbohydrazide (L1) or (E)-N1-(2,6-dichloro benzylidene)-7-methoxy benzofuran-2-carbohydrazide (L2), of the complexes. The ligands coordinate to the metal ions through the oxygen of the carbonyl group and the nitrogen of the hydrazine group. Electronic spectral data of the complexes suggests the probable geometry is octahedral in nature. All the complexes and ligands were screened for their antibacterial activity. Among them, Co, Ni, and Cu complexes of L2 showed good activity against all microbes.

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Section: Characterization Of Ligands L1 and L2 The Ligands L1supporting

confidence: 75%

Section: L2mentioning

confidence: 99%

Synthesis, Characterization, and Antibacterial Activity of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) Complexes of Schiff's Base Type Ligands Containing Benzofuran Moiety

Reddy

Shankara²,

Krishana

et al. 2013

International Journal of Inorganic Chemistry

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“…The position of these bands is consistent with octahedral geometry around the Co(II) ion. The Cu(II) and Co(II) complexes showed paramagnetism, 4.52 and 4.13 BM respectively [ 32 , 33 ]. Similarly, the electronic spectra of Ni(II) complex exhibited absorption band at 22132 cm −1 and assigned to be LMCT band and the d–d band suppressed by LMCT band.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of DNA Binding, Cleavage, and Cytotoxic Activity of Cu(II), Co(II), and Ni(II) Schiff Base Complexes of 1-Phenylindoline-2,3-dione with Isonicotinohydrazide

Gomathi

Ramu

Athiappan

2014

Bioinorganic Chemistry and Applications

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One new series of Cu(II), Co(II), and Ni(II) Schiff base complexes was prepared through the condensation reaction between 1-phenylindoline-2,3-dione with isonicotinohydrazide followed by metalation, respectively. The Schiff base ligand(L), (E)-N′-(2-oxo-1-phenylindolin-3-lidene)isonicotinohydrazide, and its complexes were found soluble in DMF and DMSO solvents and characterized by using the modern analytical and spectral techniques such as elemental analysis, conductivity, magnetic moments, IR, NMR, UV-visible, Mass, CV, and EPR. The elemental analysis data of ligand and their complexes were well agreed with their calculated values in which metal and ligand stoichiometry ratio 1 : 2 was noted. Molar conductance values indicated that all the complexes were found to be nonelectrolytes. All the complexes showed octahedral geometry around the central metal ions. Herein, we better characterized DNA binding with the complexes by UV-visible and CD spectroscopy and cyclic voltammetry techniques. The DNA cleavage experiments were carried out by Agarose gel electrophoresis method and the cytotoxicity experiments by MTT assay method. Based on the DNA binding, cleavage, and cytotoxicity studies, Cu and Ni complexes were found to be good anticancer agents against AGS-human gastric cancer cell line.

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“…33,34 The bands in the range of 3367-3445 cm -1 in complexes are due to υ(H 2 O) suggesting hydrated complexes. 35 The medium intensity sharp bands the range 1507-1531 cm -1 and 806-865 cm -1 suggesting coordinated water molecules in some complexes. 36,37 38 These three bands are consistent with octahedral geometry.…”

Section: Resultsmentioning

confidence: 97%

Synthesis of (E)-4-Methyl-2-((Phenethylimino (Phenyl)methyl)phenol and Its Transition Metal Complexes, Characterization and Electrical Conductivity Study of Complexes

Sahare¹,

Mohod²

2020

RJC

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A novel Schiff base (E)-4-methyl-2-((phenethylimino(phenyl)methyl)phenol synthesized by the condensation of 2hydroxy-5-methylbenzophenone with 2-phenylethylamine. A series of metal complexes of Mn(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) have been prepared with the newly synthesized Schiff base ligand. The synthesized ligand was characterized by elemental analysis, FT-IR and 1 H NMR spectra. The complexes have been characterized by different physicochemical techniques. The d.c. electrical conductivity of the synthesized complexes has been measured in compressed pallet form over a wide range of temperatures. The complexes were found to be semiconducting.

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Synthesis and spectroscopic characterization of metal complexes with naphthofuran-2-carbohydrazide Schiff 's base

Cited by 13 publications

References 17 publications

Synthesis, Characterization, and Antibacterial Activity of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) Complexes of Schiff's Base Type Ligands Containing Benzofuran Moiety

Synthesis, Characterization, and Antibacterial Activity of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) Complexes of Schiff's Base Type Ligands Containing Benzofuran Moiety

Evaluation of DNA Binding, Cleavage, and Cytotoxic Activity of Cu(II), Co(II), and Ni(II) Schiff Base Complexes of 1-Phenylindoline-2,3-dione with Isonicotinohydrazide

Synthesis of (E)-4-Methyl-2-((Phenethylimino (Phenyl)methyl)phenol and Its Transition Metal Complexes, Characterization and Electrical Conductivity Study of Complexes

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