Synthesis, spectral studies, and antimicrobial activity of binary and ternary Cu(II), Ni(II), and Fe(III) complexes of new hexadentate Schiff bases derived from 4,6-diacetylresorcinol and amino acids

Shebl, Magdy

doi:10.1080/00958970903012785

Cited by 86 publications

(40 citation statements)

References 49 publications

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“…In complexes 3, 10, and 11 the new bands observed in the ranges 1,360-1,384 and 1,058-1,203 cm -1 may be assigned to the monodentate NO 3 -group [41,42]. On the other hand, complex 2 showed a new band at 1,423 cm -1 that may be assigned to ionic NO 3 -group [43,44]. The mixed 8-hydroxyquinoline complexes 5 and 13 showed new bands at 1,499 and 1,497 cm -1 , respectively, which may be assigned to the coordinated C=N group of the 8-hydroxyquinoline moiety [43,45,46].…”

Section: Ir Spectramentioning

confidence: 77%

“…On the other hand, complex 2 showed a new band at 1,423 cm -1 that may be assigned to ionic NO 3 -group [43,44]. The mixed 8-hydroxyquinoline complexes 5 and 13 showed new bands at 1,499 and 1,497 cm -1 , respectively, which may be assigned to the coordinated C=N group of the 8-hydroxyquinoline moiety [43,45,46]. The mixed glycine complexes 6 and 14 showed new bands in the ranges 1,510-1,516 and 1,300-1,362 cm -1 that may be assigned to m as (COO -) and m s (COO -), respectively, of the amino acid [13,47].…”

Section: Ir Spectramentioning

confidence: 94%

“…Also, the dioxouranium(VI) complexes 4-8 and 12-16 showed strong absorption bands in the range 885-903 cm -1 which can be assigned to the antisymmetric m 3 (O=U=O) vibration [52][53][54]. [41,43].…”

Section: Ir Spectramentioning

confidence: 98%

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Synthesis, spectral, X-ray diffraction, antimicrobial studies, and DNA binding properties of binary and ternary complexes of pentadentate N2O3 carbohydrazone ligands

Shebl

Khalil

2014

Monatsh Chem

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Two pentadentate carbohydrazone ligands, H 2 L 1 and H 2 L 2 , were prepared by the reaction of the bifunctional compound carbohydrazide with 2-hydroxy-5-nitrobenzaldehyde and 2-hydroxy-1-naphthaldehyde, respectively. Reactions of the ligands with oxovanadium(IV), cerium(III), thorium(IV), and dioxouranium(VI) ions yielded binary complexes. Reactions of the ligands with the dioxouranium(VI) ion in the presence of secondary ligands (8-hydroxyquinoline, glycine, salicylaldehyde, or benzoylacetone) yielded ternary complexes. The ligands and metal complexes were characterized by different techniques such as elemental and thermal analyses, IR, 1 H and 13 C NMR, electronic, ESR, mass spectra, and powder XRD as well as magnetic susceptibility and conductivity measurements. The coordinating sites are phenolic oxygen, azomethine nitrogen, and carbonyl oxygen. In complexes, the ligands act as dibasic pentadentate except ternary dioxouranium(VI) complexes, obtained using glycine or benzoylacetone, in which the ligands act as monobasic pentadentate. The XRD patterns for the H 2 L 1 ligand, its binary dioxouranium(VI) complex, and its 8-hydroxyquinoline ternary complex indicate crystalline nature and the grain size was estimated. The H 2 L 1 ligand and its binary complex have triclinic systems while the ternary complex has a monoclinic system with different unit-cell parameters. The ligands and some of their metal complexes showed antimicrobial activity toward some Gram-positive and Gram-negative bacteria, yeast (Candida albicans), and fungus (Aspergillus fumigatus), and MIC values were determined. The DNA binding properties of the oxovanadium(IV) complexes of H 2 L 1 and H 2 L 2 ligands were investigated by electronic absorption spectroscopy and viscosity measurements. The results indicated that these complexes bind to DNA via an intercalation binding mode with an intrinsic binding constant K b of 2.55 9 10 4 and 3 9 10 4 M -1 , respectively.

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Section: Ir Spectramentioning

confidence: 77%

Section: Ir Spectramentioning

confidence: 94%

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Synthesis, spectral, X-ray diffraction, antimicrobial studies, and DNA binding properties of binary and ternary complexes of pentadentate N2O3 carbohydrazone ligands

Shebl

Khalil

2014

Monatsh Chem

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“…The (C-O) bands in the region 1248-1220 cm -1 of the free ligands shifted to higher wavenumbers of 1221-1318 cm -1 in the complexes, indicating that the phenolic oxygen is also involved in complexation [12]. The appearance of new bands in complexes in the range of 596-598 and 434-494 cm -1 , which have been assigned to the υ(Pd-N) and υ(Pd-O), respectively [14][15].…”

Section: Resultsmentioning

confidence: 97%

Synthesized and extending the Bidentate Schiff base complexes using multilayer feedforward neural network

Tajuddin

Ismail

Kassim

et al. 2018

J. Fundam and Appl Sci.

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Complexes of Pd(II) and Ni(II) have been synthesized with general composition ML 2 X 2 (M = Pd(II), Ni(II); L = benzylsalicylideneimine and X = OCH 3 , F). All synthesized compounds have been characterized using elemental analysis, magnetic susceptibility measurements, infrared and NMR spectral studies that led to the conclusion that the ligands act as bidentate manner to form square planar geometry for all complexes. As an extending work, the model development of these complexes using multilayer feedforward neural network were performed. NiL1d, PdL1d, NiL1c and PdL1c were fed to the training network as inputs and bacteria as output. Levenberg Marquardt training algorithm was used during the network training with 10 nodes in hidden layer. The results of testing network showed that the regression, R is 1, indicating that the developed model is good.Author Correspondence, e-mail: nurlaila@ieee.org J Fundam Appl Sci. 2017, 9(4S), 952-963 953 This is supported by the small mean square error (MSE) is 1.948x10 -28 at epochs 5. The finding in this study is significant, thus contributed to the design of antibacterial agent especially to the bidentate Schiff base complexes.

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“…The metal complexes with Schiff bases find various industrial and biological applications. Schiff base metal complexes have scarcely been investigated [3][4][5][6][7] . The interest in the study of hydrazones possessing potential donor sites has been intensively increasing last years because of their ability to form stable chelates with transition metals present in the vivid cell 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Spectroscopic Studies of Metal Complexes of Schiff Base Derived From 2-acetyl naphtho [2,1-b] furan.

K.¹,

ANAND²

2012

Orientjchem.

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A bidentate oxygen/ nitrogen containing Schiff base ligand 2-acetyl naptho [2,1-b] furan hydrazone (ANFH) and their Co(II), Ni(II) and Cu(II) complexes have been synthsized and characterized by molar mass, elemental analyses, spectroscopic (IR and electronic), molar conductivity and magnetic susceptibility measurements at the room temperature. On the basis of above studies it is proposes that ligand is suggested to acts in a bidentate manner and coordination proposes through azomethine nitrogen and nitrogen atom of furan ring. The remaining coordination centre are satisfied by negataive ions such as Cl -, Br -, I -and NO 3 -. The Co(II), Ni(II) complexes have octahedral geometry where as Cu(II) complexes were proposed distorted octahedral geometry.

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Synthesis, spectral studies, and antimicrobial activity of binary and ternary Cu(II), Ni(II), and Fe(III) complexes of new hexadentate Schiff bases derived from 4,6-diacetylresorcinol and amino acids

Cited by 86 publications

References 49 publications

Synthesis, spectral, X-ray diffraction, antimicrobial studies, and DNA binding properties of binary and ternary complexes of pentadentate N2O3 carbohydrazone ligands

Synthesis, spectral, X-ray diffraction, antimicrobial studies, and DNA binding properties of binary and ternary complexes of pentadentate N2O3 carbohydrazone ligands

Synthesized and extending the Bidentate Schiff base complexes using multilayer feedforward neural network

Synthesis and Spectroscopic Studies of Metal Complexes of Schiff Base Derived From 2-acetyl naphtho [2,1-b] furan.

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