24940-35-0Relevant academic research and scientific papers
Synthesis, characterization, redox behavior and hydrogenation catalytic activity of bis(N-aryl-3,5-Bu2t-salicylaldiminato) palladium(II) complexes
Kasumov, Veli T.,Ta?, E?ref,K?ksal,?zalp-Yaman, ?eniz
, p. 319 - 325 (2005)
The synthesis, spectroscopic (1H NMR, IR, UV-Vis), electron-transfer properties and catalytic reactivity of new palladium(II) complexes with N-aryl-3,5-Bu2t-salicylaldimines prepared from 3,5-Bu2t-salicylaldehyde and o-,p-substituted anilines (X-C6H 4NH2, X = H, F, Cl, Br, CH3, OCH3, t-Bu, 5,6-benzo) are reported. Cyclic voltammetry studies of the complexes exhibit an irreversible anodic peak that corresponds to the phenoxide/phenoxyl oxidation. The chemical oxidation of the complexes with (NH4) 2Ce(NO3)6 in CHCl3, besides relatively stable PdII-phenoxyl radical complexes (g = 2.0083-2.0114), also generate nitroxide radicals exhibiting strongly anisotropic spectra (g∥ = 2.0061, g⊥ = 2.0072, A ∥ = 37.5, A⊥ = 5.38 G) typical for immobilized nitroxide radicals. It has been found that the introduction of t-Bu groups on the salicylic ring increases catalytic activity of towards hydrogenation of nitrobenzene in DMF at room temperature.
