期刊
INORGANICA CHIMICA ACTA
卷 523, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2021.120414
关键词
Oxovanadium(V); Dioxomolybdenum(VI); Tridentate Schiff base; Homogeneous catalysis; Benzylic alcohols oxidation
Two new oxovanadium and dioxomolybdenum Schiff base complexes were synthesized and characterized using various spectroscopic techniques, and their potential applications were demonstrated through theoretical calculations and catalytic efficiency studies.
Two new oxovanadium and dioxomolybdenum Schiff base complexes, [VvO(L)(OCH3)(CH3OH)] and [MoVIO2(L) (CH2CH3OH)], were synthesized by treating an ONO-donor type Schiff base ligand (H2L) derived by condensation of 5-nitrosalicylaldehyde and nicotinic hydrazide with oxo and dioxo acetylacetonate salts of vanadium and molybdenum, [VO(acac)2 and MoO2(acac)2], respectively. The synthesized ligand and complexes were characterized by various spectroscopic techniques like FT-IR, multinuclear (1H, 13C) NMR, elemental analysis and the most authentic single crystal X-ray diffraction analysis. In both complexes the geometry around the central metal ions was distorted octahedral as revealed by the data collected from diffraction studies. Theoretical calculation of the synthesized compounds were carried out by DFT as well as TD-DFT using B3LYP method by employing the Def2-TZVP basis set. The findings of theoretical data indicated that the calculated results are in accordance with the experimental findings. Moreover, the catalytic efficiencies of both complexes were investigated by oxidizing the benzylic alcohols in the presence of urea hydrogen peroxide (UHP) in acetonitrile.
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