&lt;b&gt;Spectroscopic studies of some lanthanide(III) nitrate complexes synthesized from a new ligand 2,6-bis-(salicylaldehyde hydrazone)-4-chlorophenol&lt;/b&gt;

Gaye, Mohamed; Tamboura, Farba Bouyagui; Sall, Abdou Salam

doi:10.4314/bcse.v17i1.61726

Cited by 23 publications

(10 citation statements)

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“…The magnitude of separation of these two stretching is around 167-157 cm -1 , indicates the bidentate coordination of nitrate groups [28]. A band observed around 1392-1388 cm -1 is indicative of ionic nitrate which is confirmed by the conductivity measurements [27].…”

Section: Synthesis Of Bis[4′-(4-quinoline)22′;6′2′′-terpyridine]-supporting

confidence: 56%

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Studies on DNA Interactions and Biological Activities of Lanthanum(III) Complexes with 4-Quinoline Terpyridine and 1,10-Phenanthroline

et al. 2019

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A series of lanthanum(III) complexes [La(4-qtpy)2(NO3)2](NO3) (1), [La(4-qtpy)3(NO3)](NO3)2 (2), [La(4-qtpy)(phen)(NO3)2](NO3) (3) and [La(4-qtpy)(phen)2(NO3)2](NO3) (4) (4-qtpy = 4′-[(4-quinoline)-2,2′;6′,2′′-terpyridine]) were synthesized and characterized. The cyclic voltammetric studies revealed that the complexes 1 and 3 are redox active. UV-visible absorption spectral studies and viscosity measurements revealed that complexes bind to DNA through intercalation. Complexes 1 and 3 have shown the highest binding propensity (Kb = 4.241 + 0.2 × 106 for 1 and 1.492 + 0.2 × 106 for 3). The results of chemical nuclease studies revealed that the complexes 3 and 4 have shown maximum chemical nuclease activity in the presence of H2O2 and the mechanism involves hydroxyl radicals. The antibacterial activities of the complexes 1 to 4 were tested against Gram positive and Gram negative bacteria in which complex 3 shows comparable results with the standard antibiotic tetracycline. The cytotoxic activities of 4-qtpy and complex 4 were done by MTT assay against HeLa cell lines.

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Section: Synthesis Of Bis[4′-(4-quinoline)22′;6′2′′-terpyridine]-supporting

confidence: 56%

“…The percentage growth inhibition was calculated by the formula: The IC50 (concentration of test drug needed to inhibit cell growth by 50 %) values are generated from the dose-response curves for cell lines [11]. [27].…”

Section: Uv-visible Absorption Titrationmentioning

confidence: 99%

Studies on DNA Interactions and Biological Activities of Lanthanum(III) Complexes with 4-Quinoline Terpyridine and 1,10-Phenanthroline

et al. 2019

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“…3a) is displaced to 1610 cm -1 upon coordination [4]. Strong broad bands at 1361.4-1295.3 cm -1 and 1021.3 cm -1 are assigned to coordinated nitrate [35]. Complex 2 (Fig.…”

Section: Resultsmentioning

confidence: 96%

Synthesis, characterization and biological study of new dinuclear zinc(II) and nickel(II) octaaza macrocyclic complexes

Krstić

Petković

Milčić

et al. 2019

Maced. J. Chem. Chem. Eng.

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Two new nitrato complexes of zinc and nickel with 1,4,8,11-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc), have been synthesized and characterized. The IR spectral peaks showed that the coordinated and ionic nitrate ions are in agreement with the formula proposed by elemental analysis. Conductometric titrations predicted methanol to be a convenient solvent for synthesis and revealed the stoichiometry of the complexes, while molar electrical conductivities indicated a 1 : 3 complex electrolyte type for the zinc complex, and a 1 : 2 complex electrolyte type for the nickel complex. The optimized complex structure was obtained by molecular modeling and density functional theory calculations. The biological activity of the novel complexes was examined by screening eight different bacterial strains and two cancer cell lines. The zinc complex showed better antimicrobial activity against the bacterial strains, while the complexes did not show significance antiproliferative activity toward cancer cells MCF-7 and MDA-MB-231.

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“…The spectra of C32 gave a new band at (absent in L35) in the range of 526-558 cm -1 assignable to v(M-N) [92,32]. In addition, the appearance of two bands at 1489 and 1288 cm -1 assignable to v(NO -) symmetric and asymmetric, indicated that the NO -group coordinated as a monodentate moiety [43]. The pyrazole ring v(C= N), v(N-N) and pyridine ring bending in and out of an airplane were associated with a very slight shift in their position.…”

Section: Structural Characteristics Of the Compoundsmentioning

confidence: 99%

Chromium Coordination Compounds with Antimicrobial Activity: Synthetic Routes, Structural Characteristics, and Antibacterial Activity

Vlasiou¹,

Pafiti²

2020

TOMCJ

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A major threat to public health worldwide is that the antimicrobial activity of the established drugs is constantly reduced due to the resistance that bacteria develop throughout the years. Some transition metal complexes show higher antibacterial activity against several bacteria compared to those of clinically used antibiotics. Novel classes of molecules provide new challenges and seem promising to solve the crisis that the overuse of antibiotics has led over the last years. This review discusses the challenges of chromium-based metallodrugs as antimicrobial agents. In particular, the synthetic routes, the structural characteristics, as well as the antimicrobial activity of 32 chromium (III) complexes have been presented.

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<b>Spectroscopic studies of some lanthanide(III) nitrate complexes synthesized from a new ligand 2,6-bis-(salicylaldehyde hydrazone)-4-chlorophenol</b>

Cited by 23 publications

References 20 publications

Studies on DNA Interactions and Biological Activities of Lanthanum(III) Complexes with 4-Quinoline Terpyridine and 1,10-Phenanthroline

Studies on DNA Interactions and Biological Activities of Lanthanum(III) Complexes with 4-Quinoline Terpyridine and 1,10-Phenanthroline

Synthesis, characterization and biological study of new dinuclear zinc(II) and nickel(II) octaaza macrocyclic complexes

Chromium Coordination Compounds with Antimicrobial Activity: Synthetic Routes, Structural Characteristics, and Antibacterial Activity

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