Supramolecular structure, stereochemistry and substituents effect on the spectral studies of novel ruthenium complexes

El‐Sonbati, A.Z.; Belal, A.A.M.; El-Meksoud, S.A. Abd; El-Boz, R.A.

doi:10.1016/j.molstruc.2012.06.016

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…Reaction of 7-(2,3-dihydro-1,3-benzothiazol-2-yl)quinolin-8-ol with metal ions: The complexes were prepared by methods similar to the reported in earlier publications [14,[22][23][24] according to the following procedures: 1) Mono(7-(2,3-dihydro-1,3-benzothiazol-2-yl)quinolin-8-ol)Cd and Zn [(I) and (II)] (Scheme 2) M(OAc) 2 .2H 2 O (0.5 mmol) in ethanol (15 ml), was added to ligand (H 2 L) (0.5 mmol) in DMF:Ethanol (1:2 v/v) (25 ml) and the resulting mixture was stirred at room temperature for 3 h. The formed precipitate was filtered off, washed with ethanol and ether, respectively, and dried in vacuum over P 2 O 5 .…”

Section: General Methods For Preparing Complexesmentioning

confidence: 99%

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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Section: General Methods For Preparing Complexesmentioning

confidence: 99%

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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“…The tautomeric form (C) react with metal ions by loss of phenolic proton as mononegative chelating agents producing of CO/OH mode of the free ligands [4,29]. 4) Furthermore, the bands in the regions 545-560 and 420-428 cm -1 can be assigned to the stretching modes of the metal to ligand bonds, υ(Cu-O) and υ(Cu-N) for 1:1 (M:L) complexes, respectively, [4].…”

Section: Infrared Spectra Of Complexes and Nature Of Coordinationmentioning

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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Molecular Docking, Potentiometric and Thermodynamic Studies of Some Azo Compounds

et al. 2016

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Supramolecular structure, stereochemistry and substituents effect on the spectral studies of novel ruthenium complexes

Cited by 11 publications

References 29 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

Molecular Docking, Potentiometric and Thermodynamic Studies of Some Azo Compounds

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