Synthesis, characterization, cytotoxic activity and DNA-binding studies of cobalt (II) mixed-ligand complex containing pyridine-2,6-dicarboxylate ion and 2-aminopyrimidine

2016 ◽  
Vol 13 (6) ◽  
pp. 1125-1132 ◽  
Author(s):  
Maryam Bordbar ◽  
Masoumeh Tabatabaee ◽  
Majid Alizadeh-Nouqi ◽  
Zohreh Mehri-Lighvan ◽  
Hamid Reza Khavasi ◽  
...  
Keyword(s):  
Dna Binding ◽  
Cytotoxic Activity ◽  
Mixed Ligand Complex ◽  
Mixed Ligand ◽  
Binding Studies ◽  
Ligand Complex ◽  
Dna Binding Studies

Photophysical properties and DNA binding studies of novel Eu 3+ mixed ligand complex

2016 ◽  
Vol 177 ◽  
pp. 416-424 ◽  
Author(s):  
Sneha R. Wankar ◽  
Umar Jan Pandit ◽  
Imran Khan ◽  
S.N. Limaye
Keyword(s):  
Dna Binding ◽  
Photophysical Properties ◽  
Mixed Ligand Complex ◽  
Mixed Ligand ◽  
Binding Studies ◽  
Ligand Complex ◽  
Dna Binding Studies

scholarly journals Synthesis and Characterization of Oxidovanadium(IV) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol and Their Antimicrobial, Antioxidant, and DNA-Binding Studies

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
K. Savithri ◽  
H. D. Revanasiddappa
Keyword(s):  
Dna Binding ◽  
Mixed Ligand Complex ◽  
Radical Scavenging ◽  
Molar Conductance ◽  
Diffusion Method ◽  
Spectral Studies ◽  
Binding Studies ◽  
Ligand Complex ◽  
Intercalative Mode

Two novel oxidovanadium(IV) complexes with a new bidentate (O- and N-) imine-based ligand 2-((E)-(6-fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol (HL) were synthesized under in situ experimental condition where VOSO4 acts as a kinetic template in the ratio 2 : 1 (L : M) and mixed ligand complex using 1,10-phenanthroline (phen) in 1 : 1 : 1 (L : M : phen) ratio. The synthesized compounds were structurally characterized by microanalysis, magnetic susceptibility, FTIR, electronic spectra, TG/DTA, ESR, and molar conductance studies. Based on the spectral studies, the complexes have the general composition [VO(L)2] (C1) and [VO(L)phen] (C2) in a square pyramid geometrical fashion. The synthesized compounds were primarily screened for their in vitro growth inhibiting activity against different strains of bacteria, namely, E. coli, B. subtilis, S. aureus, and P. aeruginosa by the disc diffusion method. Also, the antifungal activity was determined against C. albicans and A. niger by the Bateman poisoned technique. The in vitro antioxidant activity of all the compounds was determined by DPPH free radical-scavenging assay. Intercalative mode of DNA-binding properties of the oxidovanadium(IV) complexes with calf-thymus DNA (CT-DNA) was investigated using UV, fluorescence spectra, and viscosity measurements.

DNA-binding studies of mixed ligand cobalt(III) complexes

2005 ◽  
Vol 30 (3) ◽  
pp. 312-316 ◽  
Author(s):  
Archika C. Barve ◽  
Smita Ghosh ◽  
Anupa A. Kumbhar ◽  
Avinash S. Kumbhar ◽  
Vedavati G. Puranik
Keyword(s):  
Dna Binding ◽  
Mixed Ligand ◽  
Binding Studies ◽  
Dna Binding Studies

DNA-Binding Properties of Iron(II) Mixed-Ligand Complexes Containing 1,10-Phenanthroline and Dipyrido[3,2-a:2’,3’-c]phenazine

2004 ◽  
Vol 59 (3) ◽  
pp. 310-318 ◽  
Author(s):  
◽  
Karna Wijaya ◽  
Daryono H. Tjahjono ◽  
Naoki Yoshioka ◽  
Hidenari Inoue
Keyword(s):  
Dna Binding ◽  
Bathochromic Shift ◽  
Mixed Ligand Complex ◽  
Visible Region ◽  
Spectrophotometric Titration ◽  
Mixed Ligand ◽  
Ligand Complex ◽  
Binding Properties ◽  
Ct Dna ◽  
Dna Binding Properties

An iron(II) mixed-ligand complex with 1,10-phenanthroline (phen) and dipyrido[3,2-a:2’,3’- c]phenazine (dppz), [Fe(phen)2(dppz)]2+, has been synthesized. The DNA-binding properties of the mixed-ligand complex have been studied in terms of equilibrium binding constant, thermodynamic parameter, thermal denaturation as well as Pfeiffer effect upon binding to DNA. The spectrophotometric titration of [Fe(phen)2(dppz)]2+ with calf thymus DNA (ct-DNA) has shown that the iron(II) mixed-ligand complex binds effectively to ct-DNA in an intercalation mode as indicated by remarkable hypochromicity (ca. 36%) and moderate bathochromic shift (8 nm) of the absorption spectra. This intercalative mode is supported by a significant increase (Δ Tm = 21 °C) in the melting temperature (Tm) of ct-DNA at R([complex]/[ct-DNA]) = 1.5. The binding of [Fe(phen)2(dppz)]2+ to ct-DNA is entropically driven as characterized by a positive enthalpy change and a large negative TΔ S term. An intense CD signal in the UV and visible region develops upon addition of ct-DNA to the racemate solution of [Fe(phen)2(dppz)]2+. This has revealed that a shift in diastereomeric inversion equilibrium takes place in the solution to yield an excess of one enantiomer of the DNA-iron(II) complex (Pfeiffer effect). The striking resemblance of the CD spectral profiles to those of the corresponding Δ -enantiomer indicates that Δ -[Fe(phen)2(dppz)]2+ is preferentially bound to ct-DNA

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