Copper complexes of some tetradentate pyrazolyl amines

Addison, Anthony W.; Palaniandavar, M.; Driessen, Willem L.; Paap, F.; Reedijk, Jan

doi:10.1016/s0020-1693(00)80665-9

Cited by 20 publications

(9 citation statements)

References 22 publications

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“…Their reflectance spectra revealed that the d-d absorption peak of the bound complexes 1c and 2c showed the k max value of 517.4 nm (19 327 cm À1 ) and 522.1 nm (19 153 cm À1 ), respectively, recommending square-planar CuN 4 complexes [35][36][37][38]. Their maximum absorptions were significantly shifted to shorter wavelength Fig.…”

Section: Diffuse Reflectance Spectramentioning

confidence: 99%

The replacement of chlorides by cytosines in copper(II) complexes containing guanidine derivatives

Meenongwa¹,

Chaveerach²,

Siriwong³

2011

Inorganica Chimica Acta

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Section: Diffuse Reflectance Spectramentioning

confidence: 99%

The replacement of chlorides by cytosines in copper(II) complexes containing guanidine derivatives

Meenongwa¹,

Chaveerach²,

Siriwong³

2011

Inorganica Chimica Acta

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“…So the distinct cleavage efficiencies observed for the present complexes can be rationalized by their significantly different coordination geometries. Indeed, it has been shown that the coordination geometry plays an important role in Cu(II)/Cu(I) redox processes (57) which is in accordance with the Fenton-type mechanism. It has been demonstrated that the cleavage of DNA in the absence of a reductant, possibly with copper(II) complexes through an effective activation of molecular oxygen, generating reactive oxygen species (58).…”

Section: Puc 19 Dna Photocleavage Studiesmentioning

confidence: 57%

Metal Complexes of New Tetraazamacrocyclic Constrained Oxadiazole Ring as Subunits: Synthesis, DNA Binding and Photonuclease Activity

Kumar

Naik

Girija

et al. 2012

Journal of Macromolecular Science, Part A

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A new tetraazamacrocyclic ligand, L (C 24 H 16 N 12 O 6 ) and its complexes of type, [MLCl 2 ] and [CuL]Cl 2 (Where M = Co(II), Fe(II); L = N,N -(benzene-1,3-diyldi-1,3,4-oxadiazole-5,2-diyl)bis{2-[(5-benzene-1,3-diyl-1,3,4-oxadiazol-2-yl)amino]acetamide}) were synthesized and characterized by elemental analysis including IR, 1 H NMR, 13 C NMR, mass and electronic spectral data. An octahedral geometry has been proposed for Fe(II) and Co(II) complexes except the Cu(II) complex which have a square planar environment. The binding property of the complexes with CT-DNA was studied by absorption spectra, viscosity measurement and thermal denaturation studies. The absorption spectral results indicate that the complexes binds with the base pairs of DNA with an intrinsic binding constant K b of Cu(II), Co(II) and Fe(II) complexes were found to be 4.5 × 10 4 M −1 , 5.7 × 10 4 M −1 and 2.6 × 10 4 M −1 , respectively in 5 mM Tris-HCl/50 mM NaCl buffer at pH 7.2. The photo induced cleavage studies revealed that the complexes show photonuclease property against pUC19 DNA under UV-visible irradiation.

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“…This could be explained by the redox activity of the Cu(I)/Cu(II) couple, which can facilitate the formation of ROS that cause DNA damage via Fenton-type reactions. 61 The antifungal activities of these metal complexes against C. albicans and C. parasilosis ranged 23), [(η 6 -p-cymene)-RuCl(L) 2 ]Cl (24), and [(η 6 -p-cymene)-RuCl(L) 3 ](PF 6 ) 2 (25) (Fig. 13).…”

Section: Azole-based Metal Complexesmentioning

confidence: 99%