Supramolecular structure, mixed ligands and substituents effect on the spectral studies of oxovanadium(IV) complexes of bioinorganic and medicinal relevance

El‐Sonbati, A.Z.; Belal, A.A.M.; El-Gharib, Mohamed S.; Morgan, Sh.M.

doi:10.1016/j.saa.2012.04.066

Cited by 65 publications

(34 citation statements)

References 37 publications

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“…The 1 H NMR data of uncomplex and diamagnetic complexes [18][19][20] have been listed in Table 7. The δOH (~12.02 ppm) and δNH (4.18 ppm) proton signals are present in the ligand.…”

Section: Spectral and Thermal Properties Of The Ligand And Complexesmentioning

confidence: 99%

“…The disappearance, in the spectra of all complexes of a peak due to ν(S-H), indicates the deprotonation of thiolic proton on complex formation [34]. The participation of phenolic oxygen and thiolic sulphur in coordination to the metal ion is further supported by an upward shift [34] in ν(C-O) (phenolic) to extent of 20-30 cm -1 and a downward shift [17][18][19]34] in ν(C-S) in all the complexes. The major shift of ν(C-O) (phenolic) to higher energy by ~30 cm -1 in the case of Ni(II) and Co(II) complexes certainly indicates the presence of phenoxo bridge [35].…”

Section: Rearrangement Of the Ligand In The Presence Of Metal Ionsmentioning

confidence: 99%

“…used as supplied. The experimental techniques were as described previously [18][19][20]. 8-Hydroxy-7-quinoline carboxaldehyde (oxine) was previously prepared by El-Sonbati [21].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation and Rearrangement of Novel Supramolecular 7-(2,3-dihydro- 1,3-benzothiazol-2-yl)quinolin-8-ol Complexes and their Biological Effect

MI¹

2014

J Microb Biochem Technol

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Novel tridentate Schiff base ligand derived from the 2-aminobenzenthiol and 8-hydroxy-7-quinolinecarboxaldehyde (oxine) and its metal complexes have been prepared. The reaction of a solution of 7-(2,3-dihydro-1,3-benzothiazol-2-yl)quinolin-8-ol (H 2 L) with di-and tetravalent transition metals have been studied chemically and biologically. The optimized bond lengths, bond angles and calculated the quantum chemical parameters for the ligand (H 2 L) [the cyclic form (A) and the Schiff base form (B)] were investigated. The complexes have been characterized by elemental analyses, IR spectra, thermal analyses and 1 H-NMR spectroscopy. The spectral studies of the isolated complexes showed that the rearrangement of the benzothiazoline to the Schiff base had occurred. The data suggest that the Co(II) and Ni(II) complexes are binuclear and octahedral dimmers, while the rest are monomeric with square planar/ tetrahedral geometries. The ESR spectrum of the Cu(II) complex show axial type symmetry with g ll >g┴>2.002, indicating d x2-y2 ground state with significant covalent bond character. Five doses were topically applied against the newly emerged adults of the red palm weevil Rhynchophorus ferrugineus. Percent of adult mortality was 98.2%, which occurred after adult treatment with the highest dose (2.2 mg/ml) of Ni(II) complex. The lowest mortality was 5.6% which obtained due to effect of oxine after adult was treated with dose of 0.25 mg/ml. Five doses were topically applied against the newly emerged adults of the stored product weevil, Sitophilus granaria. While the lower mortality, 5% caused due to effect of least dose, 0.15 mg/ml of the compound oxine.

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“…The 1 H NMR data of uncomplex and diamagnetic complexes [18][19][20] have been listed in Table 7. The δOH (~12.02 ppm) and δNH (4.18 ppm) proton signals are present in the ligand.…”

Section: Spectral and Thermal Properties Of The Ligand And Complexesmentioning

confidence: 99%

Section: Rearrangement Of the Ligand In The Presence Of Metal Ionsmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation and Rearrangement of Novel Supramolecular 7-(2,3-dihydro- 1,3-benzothiazol-2-yl)quinolin-8-ol Complexes and their Biological Effect

MI¹

2014

J Microb Biochem Technol

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“…Azodyes play also an important role in inorganic chemistry, as they easily form stable complexes with most transition metal ions [1][2][3][4][5]. The behavior of azodye complexes have attracted the attention of the bioinorganic chemists, since a number of these complexes are recognized to serve as models for biologically important species [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Chemical properties of rhodanine and its derivatives are of interest due to coordination capacity also widely prepared and studied several metal complexes of rhodanine azodyes due to their unusual magnetic properties and relevance to biological system [1,2,14,15]. Rhodanine and its derivatives are known to possess biological activities such as anticancer, antimiotic, antidiabetic, antibacterial, hypocholesterolemic, antiperlipemic, antiviral and antidiabetic in nature and also reported rhodanine derivatives as Hepatitis C Virus (HCV) protease inhibitor [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties, Antimicrobial Activity of Azo Complexes and Ultrastructure Study of Some Affected Bacteria

MI¹,

AZ²

2011

JMBT

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A series of copper (II) complexes of bidentate azo rhodanine ligands (HLn) have been synthesized and characterized. The IR spectral and thermogravimetric analysis are used to characterize the isolated complexes. X-ray diffraction patterns show polycrystalline nature for as-synthesized ligand HL2 and its complex. Quantum chemical parameters, absolute hardness, global electrophilicity and additional electronic charge were calculated for HLn. Copper(II) complexes (1-4) are tested against four local bacterial species; namely two Gram positive bacteria (Staphylococcus aureus and Bacillus cereus) and two Gram negative bacteria (Escherichia coli and Klebsiella pneumoniae) and against four local fungal species (Aspergillus niger, Fusarium oxysporium, Penicillium italicum and Alternaria alternata). The tested complexes have good antibacterial activity against Staphylococcus aureus and Escherichia coli and have low antifungal activity against Aspergillus niger, Fusarium oxysporium and Alternaria alternata. We found that the complex (3) is more active than other complexes against Staphylococcus aureus and Escherichia coli as expected from Hammett's substituent coefficients (σR). Ultrastructure studies of the affected Staphylococcus aureus and Escherichia coli confirmed that complex (3) has bactericidal effect.

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Polymer complexes. LXVIII. Spectroscopic studies of supramolecular copper(II) polymeric complexes of biologically active monomer derived from novel sulfa drug

El‐Sonbati

Diab

Morgan³

et al. 2017

Applied Organom Chemis

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The novel ligand N‐[4‐(5‐methylisoxazol‐3‐ylsulfamoyl)phenyl]acrylamide (HL) was prepared via amidation of 4‐amino‐N‐(5‐methylisoxazol‐3‐yl)benzenesulfonamide with acryloyl chloride in benzene as solvent. Polymeric complexes with HL were prepared and characterized using elemental analysis, spectral studies (infrared, mass, UV–visible and electron paramagnetic resonance), powder X‐ray diffraction, thermal analysis, molar conductivity and magnetic susceptibility. Infrared spectral studies reveal that HL behaves as a neutral bidentate ligand. Powder X‐ray diffraction patterns of HL and polymer complexes show many diffraction peaks which indicate polycrystalline phases. Based on magnetic moment and solid reflectance measurements, the polymer complexes have square planar and octahedral geometries. Molecular docking was used to predict the binding between HL and the receptors of 3hb5‐oxidoreductase (breast cancer) and 2q7k‐hormone (prostate cancer).

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Supramolecular structure, mixed ligands and substituents effect on the spectral studies of oxovanadium(IV) complexes of bioinorganic and medicinal relevance

Cited by 65 publications

References 37 publications

Evaluation and Rearrangement of Novel Supramolecular 7-(2,3-dihydro- 1,3-benzothiazol-2-yl)quinolin-8-ol Complexes and their Biological Effect

Evaluation and Rearrangement of Novel Supramolecular 7-(2,3-dihydro- 1,3-benzothiazol-2-yl)quinolin-8-ol Complexes and their Biological Effect

Thermal Properties, Antimicrobial Activity of Azo Complexes and Ultrastructure Study of Some Affected Bacteria

Polymer complexes. LXVIII. Spectroscopic studies of supramolecular copper(II) polymeric complexes of biologically active monomer derived from novel sulfa drug

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