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- W2183678412 abstract "Reaction of W(CO) 6 and 1-alkyl-2-(arylazo)imidazoles (RaaiR / ) yields tetracarbonyl complexes of the composition, [W(CO) 4 (RaaiR / )]. The complexes have been characterized by different spectroscopic methods (FT-IR,UV-Vis, 1 H-NMR and mass spectrometry). Electrochemistry of the complexes shows oxidation of tungsten, W(0) → W(+1) at potential 0.70-1.00 V. Geometry of representative complexes in each group of ligand optimized by DFT calculations, shows that the HOMO is composed of W (>60%) and CO (>30%) orbitals while LUMO is carrying only azoimidazole characteristics (>75%). [W(CO) 4 (1-methyl-2-(phenylazo)imidazoles)] shows lowest energy in the series. The complexes exhibit emission at room temperature, with [W(CO) 4 (1-alkyl-2-(naphthyl-β-azo)imidazole, β-NaiR)] showing higher quantum yield (φ = 0.50-0.63) than others." @default.
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- W2183678412 date "2009-09-01" @default.
- W2183678412 modified "2023-09-28" @default.
- W2183678412 title "Arylazoimidazole-W(0)-carbonyl complexes: Synthesis, characterization, electrochemistry, photophysical studies and correlation with DFT computed data" @default.
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