Synthesis, crystal structures and catalytic activity of oxidovanadium(V) complexes with tridentate ONO aroylhydrazone ligands
收藏DataCite Commons2024-02-07 更新2024-07-28 收录
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https://tandf.figshare.com/articles/dataset/Synthesis_crystal_structures_and_catalytic_activity_of_oxidovanadium_V_complexes_with_tridentate_ONO_aroylhydrazone_ligands/14215868
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Two oxidovanadium(V) complexes, [VOL<sup>1</sup>(OEt)] (<b>1</b>) and [V<sub>2</sub>O<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>(OEt)<sub>2</sub>] (<b>2</b>), where L<sup>1</sup> and L<sup>2</sup> are the anions of 2-amino-<i>N′</i>-(2-hydroxybenzylidene)benzohydrazide (H<sub>2</sub>L<sup>1</sup>) and <i>N′</i>-(2-hydroxybenzylidene)-4-hydroxybenzohydrazide (H<sub>2</sub>L<sup>2</sup>), respectively, have been synthesized and characterized by elemental analysis, infrared and electronic spectra, and <sup>1</sup>H NMR spectra. Structures of the complexes were further confirmed by single-crystal X-ray determination. The V atom in the mononuclear complex <b>1</b> is in square pyramidal coordination, and those in the dinuclear complex <b>2</b> are in octahedral coordination. Both aroylhydrazone ligands coordinate to the V atoms through the phenolate O, imino N, and enolate O atoms. The ethanol ligand in complex <b>1</b> is in terminal coordination mode, while that in complex <b>2</b> is in bridging coordination mode. The complexes function as effective olefin epoxidation catalysts with hydrogen peroxide as terminal oxidant and sodium hydrogen carbonate as a co-catalyst.
提供机构：
Taylor & Francis
创建时间：
2021-03-15
