The ligational behavior of an isatinic quinolyl hydrazone towards copper(II)- ions

Seleem, H.S.; El‐Inany, Gaber A.; El‐Shetary, B. A.; Mousa, M.

doi:10.1186/1752-153x-5-20

Cited by 15 publications

(26 citation statements)

References 20 publications

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“…It has also been shown that these metal complexes can be potent inhibitors of cell growth and DNA synthesis (Despaigne et al, 2010;Havanur et al, 2010;Ambwani et al, 2011). Metal complexes with hydrazones also have potential applications as catalysts, luminescent probes and molecular sensors (Seleem et al, 2011;Singh & Raghav, 2011). We report herein the crystal structure of the title compound, a new hydrazone.…”

Section: Data Collectionmentioning

confidence: 99%

(E)-N′-(4-Methoxybenzylidene)pyridine-3-carbohydrazide dihydrate

Novina

Vasuki²,

Suresh³

et al. 2013

Acta Cryst E

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In the title compound, C14H13N3O2·2H2O, the hydrazone molecule adopts an E conformation with respect to the C=N bond. The dihedral angle between the benzene and pyridine rings is 8.55 (10)°. The methylidene–hydrazide [–C(=O)–N–N=C–] fragment is essentially planar, with a maximum deviation of 0.0375 (13) Å. The mean planes of the benzene and pyridine rings make dihedral angles of 2.71 (14) and 11.25 (13)°, respectively, with mean plane of the methylidene-hydrazide fragment. In the crystal, the benzohydrazide and water molecules are linked by N—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds into a three-dimensional network.

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Section: Data Collectionmentioning

confidence: 99%

(E)-N′-(4-Methoxybenzylidene)pyridine-3-carbohydrazide dihydrate

Novina

Vasuki²,

Suresh³

et al. 2013

Acta Cryst E

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“…In this study, the electronic absorption spectra of the hydrazone (2 × 10 -5 M) were recorded in solvents of various polarities (Table 1 and Figure 2 ). The hydrazone displays mainly three bands, the shortest UV- bands (λ 1 = 205-275 and λ 2 = 384-401 nm ) are best ascribed to π-π* transitions of the aromatic system and they are solvent sensitive bands whereas, the longest UV- band (λ 3 = 468-476 nm) is a strong broad band reflecting its charge transfer (CT) nature [ 9 , 10 ]. The latter band impacts the ligand its red color.…”

Section: Resultsmentioning

confidence: 99%

Transition metal complexes of an isatinic quinolyl hydrazone

Seleem

2011

Chemistry Central Journal

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BackgroundThe importance of the isatinic quinolyl hydrazones arises from incorporating the quinoline ring with the indole ring in the same compound. Quinoline ring has therapeutic and biological activities. On the other hand, isatin (1H-indole-2,3-dione) and its derivatives exhibit a wide range of biological activities. Also, the indole ring occurs in Jasmine flowers and Orange blossoms. Recently, the physiological and biological activities of quinolyl hydrazones arise from their tendency to form metal chelates with transition metal ions. In this context, we have reported to isolate, characterize and study the biological activity of some transition metal complexes of an isatinic quinolyl hydrazone; 3-[2-(4-methyl quinolin-2-yl)hydrazono] indolin-2-one.ResultsMono- and binuclear as well as dimeric chelates were obtained from the reaction of a new isatinic quinolyl hydrazone with Fe(III), Co(II), Ni(II), Cu(II), VO(II) and Pd(II) ions. The ligand showed a variety of modes of bonding viz. (NNO)2-, (NO)- and (NO) per each metal ion supporting its ambidentate and flexidentate characters. The mode of bonding and basicity of the ligand depend mainly on the type of the metal cation and its counter anion. All the obtained Pd(II)- complexes have the preferable square planar geometry (D4h- symmetry) and depend mainly on the mole ratio (M:L).ConclusionThe effect of the type of the metal ion for the same anion (Cl-) is obvious from either structural diversity of the isolated complexes (Oh, Td and D4h) or the various modes of bonding. The isatinic hydrazone uses its lactim form in all complexes (Cl-) except complex 5 (SO42-) in which it uses its lactam form. The obtained Pd(II)- complexes (dimeric, mono- and binuclear) are affected by the mole ratio (M:L) and have the square planar (D4h) geometry. Also, the antimicrobial activity is highly influenced by the nature of the metal ion and the order for S. aureus bacteria is as follows: Nickel(II) > Vanadyl(II) > Cobalt(II) > Copper(II) ≈ Palladium(II) >> Iron(III).

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“…Moreover, the band at 1610 cm −1 of υ(C=C) is still presented of the aromatic ring (Seleem, et al, 2011) (Table II).…”

Section: A the Ir Spectrum Of The Ligandmentioning

confidence: 99%

Synthesis and Characterization of Sodium Diphenylcarbamodithioate Ligand [L] and its Cobalt, Nickel, and Copper Complexes

Alsalihi

Al-Fahdawi

Meena

2017

ARO

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Abstract-A correlation of the infrared (IR) spectra of thiocarbonyl derivatives based on the literature data has been carried out. Assignments have also been made in some new systems. Sodium diphenylcarbamodithioate ligand and its monomeric complexes were synthesized at room temperature and stirring condition. The ligand and its complexes of the general formula [M(L) 2 ] (where M=Co п , Ni п , and Cu п ) were characterized by spectroscopic methods (IR and ultraviolet-visible), elemental analysis (CHN and S) metal content, magnetic susceptibility measurement, and biological activity (an antibacterial activity of the complex was studied by agar disc diffusion method and minimum inhibitory concentration strain against Staphylococcus aureus and Bacillus subtilis). The complex exhibited significant activities against S. aureus and B. subtilis, thin-layer chromatography, mass spectrometry, X-ray powder diffraction, and molar conductance. Our study revealed the formation of four-coordinate square planar complexes around Co п , Ni п , and Cu п metal ions. Index Terms-Diphenylcarbamodithioatecomplexes, Four-coordinate square planar complexes, Sodium diphenylcarbamodithioate ligand, Structural study.

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The ligational behavior of an isatinic quinolyl hydrazone towards copper(II)- ions

Cited by 15 publications

References 20 publications

(E)-N′-(4-Methoxybenzylidene)pyridine-3-carbohydrazide dihydrate

(E)-N′-(4-Methoxybenzylidene)pyridine-3-carbohydrazide dihydrate

Transition metal complexes of an isatinic quinolyl hydrazone

Synthesis and Characterization of Sodium Diphenylcarbamodithioate Ligand [L] and its Cobalt, Nickel, and Copper Complexes

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