Kilic, AhmetAlcay, FerhatAydemir, MuratDurgun, MustafaKeles, ArmaganBaysal, Akin2024-04-242024-04-2420151386-1425https://doi.org/10.1016/j.saa.2015.01.094https://hdl.handle.net/11468/16001A new series of Schiff base ligands (L-1-L-3) and their corresponding fluorine/phenyl boron hybrid complexes [LnBF2] and [LnPh2] (n=1, 2 or 3) have been synthesized and well characterized by both analytical and spectroscopic methods. The Schiff base ligands and their corresponding fluorine/phenyl boron hybrid complexes have been characterized by NMR (H-1, C-13 and F-19), FT-IR, UV-Vis, LC-MS, and fluorescence spectroscopy as well as melting point and elemental analysis. The fluorescence efficiencies of phenyl chelate complexes are greatly red-shifted compared to those of the fluorine chelate analogs based on the same ligands, presumably due to the large steric hindrance and hard pi ->pi* transition of the diphenyl boron chelation, which can effectively prevent molecular aggregation. The boron hybrid complexes were applied to the transfer hydrogenation of acetophenone derivatives to 1-phenylethanol derivatives in the presence of 2-propanol as the hydrogen source. The catalytic studies showed that boron hybrid complexes are good catalytic precursors for transfer hydrogenation of aromatic ketones in 0.1 M iso-PrOH solution. Also, we have found that both steric and electronic factors have a significant impact on the catalytic properties of this class of molecules. (C) 2015 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessBoron Hybrid ComplexesSchiff BasesFluorescenceTransfer HydrogenationSpectroscopyArticle1426272WOS:0003519804000092-s2.0-849231848862570335810.1016/j.saa.2015.01.094Q1Q2