The enhanced luminescence of lanthanide complexes coordinated to antenna ligands has potential applications for developing devices like screens and lamps. Herein, three β -diketone were incorporated into Eu(III) Tb(III) metals synthesize five complexes. Their properties in solid state the energy levels electronic states recorded probed by UV–vis fluorescence spectroscopies. Under UV light, a wh...

The redox potentials of cobalt and iron complexes with ten pyridylazo compounds, E(0)(ML2) (ML(2)(+/0); M: Co(III/II), Fe(III/II); L(-): pyridylazo compounds), have been determined in order to explore the difference in their reversed-phase HPLC behavior. The redox potentials of Co complexes were in the range of -0.62 - 0.03 V, while those of Fe complexes were -0.06 - 0.59 V relative to 0.20 V f...

We analyzed the apoptosis and anti-tumour activities of several Mn(III)-salen and -salphen complexes (1-14) towards three different cultured human cancer and non-cancer cells. We demonstrated that most of the Mn(III)-salen and -salphen complexes affect cell viability and induce apoptosis in MCF7 cells. Biochemically active Mn(III)-salen and -salphen complexes induced nuclear fragmentation and r...

Preparation and characterization of various complexes of cobalt (III)-amino acid system, especially cobalt (III) glycinato and cobalt (III) alaninato complexes are reported. The identification of the various isomers of these complexes is also reported. The various isomers are separated from their mixture by fractional crystallization. Each of these complexes has been characterized by observing ...

Data from potentiometric titrations of Eu(CF(3)SO(3))(3) by Me(4)NOH in 80% v/v DMSO/water agree equally well with formation of two sets of hydroxo complexes: either Eu(2)OH(5+) and Eu(OH)(n)(3-n) (n = 1-3) or Eu(2)OH(5+), Eu(2)(OH)(2)(4+), Eu(2)(OH)(5)(+) and Eu(OH)(3). Studies using direct excitation luminescence spectroscopy and time-resolved decay measurements of Eu(III) solutions containin...

2-hydroxy-5-chloro-3-nitroacetophenone isonicotinoyl hydrazone as a Schiff base ligand and its complexes with Cr(III), Mn(III), Fe(III), VO(IV), Zr(IV) and UO2(VI) metal ions have been synthesized. The ligands as well as their metal complexes were well characterized using various physicochemical techniques such as elemental analyses, molar conductance measurements, magnetic measurements, therma...

1 Acetohydroxamatoiron (III) complexes Andrieux et al. Abstract Studies of the thermodynamics of formation of the acetohydroxamatoiron(III) complexes were carried out in acidic media at temperatures ranging from 293 to 323 K. Through the isolation of the unique UV –visible spectra of all three complexes, it was possible to determine their formation constants and deduce enthalpies and entropies ...