Influence of Zn–Cd substitution: Spectroscopic and theoretical investigation of 8-hydroxyquinoline complexes

Bonding, Structure, and Stability of Clusters: Some Surprising Results from an Experimental and Theoretical Investigation in Gas Phase

“…On the theoretical side, electronic structure calculations on alkali metal clusters pose a considerable challenge: the existence of multiple isomers, and the electronic nature of alkali metal ions, which leads to several interactions between the metal ions and ligands [16,17].…”

“…On the other hand, DFT methods have been increasingly applied to the study of the interaction of metals with biomolecules. This approach is interesting because it includes the effect of electronic correlations and allows for the calculation of larger systems [17].…”

NMR, DFT and luminescence studies of the complexation of Zn(ii) with 8-hydroxyquinoline-5-sulfonate

“…The 1 H and 13 C NMR spectra were obtained on a Varian Unity-500 NMR spectrometer (at 499.843 and 125.695 MHz, respec-tively). The 13 C spectra were recorded using proton decoupling techniques (Waltz-16) taking advantage of the nuclear Overhauser effect.…”

“…9, 10 Due to the variety and importance of zinc functions in biology and medicine, various fluorescent probes have been designed for this species, some of which have been used successfully in zinc neurochemistry. 11, 12 The favourable luminescent properties of complexes of Zn(II) with hydroxyaromatic ligands, such as 8-hydroxyquinoline (8-HQ) 13 support the application of the water soluble derivative, 8-hydroxyquinoline-5-sulfonate (8-HQS), in the development of luminescent sensors for the analytical determination of Zn 2+ down to low concentrations in surface waters and biological fluids. Although complexation of zinc with 8-HQS has been studied for over 60 years, 14 our understanding of these systems is far from complete.…”

Bivalent transition metal complexes of 3-(2-(4-(dimethylamino)benzylidene)hydrazinyl)-3-oxo-N-(thiazol-2-yl)propanamide: Structural, spectral, DFT, ion-flotation and biological studies

“…Also, this moiety is a very good complexing agent that provides several probable binding sites for complexation of diverse metal ions. Schiff-bases of 2-amino thiazoles and their transition metal complexes play an important role in pharmaceutical chemistry along with co-ordination chemistry [1][2][3][4][5]. Furthermore, Schiff-bases as selective metal extracting agents were utilized in analytical chemistry in addition to spectroscopic determination of some transition metal ions, where many separation/preconcentration techniques (ion-flotation, ion-selective electrode, solid phase extraction, co-precipitation, column extraction, cloud point extraction and liquid-liquid extraction) were stated to determine trace metal [6][7][8][9][10].…”