Synthesis, Structural Characterization of a New Ni(II) Complex and Its Catalytic Activity for Oxidation of Benzyl Alcohol

In ethanol-water (v:v = 1:1), a new Ni(II) complex, [Ni(L)2(H2O)2] (1) (HL 6-phenylpyridine-2-carboxylic acid) was synthesized using acid, NaOH and Ni(CH3COO)2.4H2O. The structure of complex 1 has been determined by elemental analysis single crystal X-ray diffraction. shows that contains one ion, two L ligands coordinated water molecules. 1, the ion is six-coordinated to O atoms N from molecules, respectively, which form distorted octahedral coordination geometry. whole unit interconnected each other through intermolecular N−H•••O hydrogen bonds involving oxygen atom molecule ligand 1D molecular architecture. catalytic activity for oxidation benzyl alcohol with O2 investigated. good performance alcohol, conversion, benzaldehyde selectivity, yield were 49.1%, 92.0%, 45.2%, at 90 °C under 0.7 Mpa 2 h. Moreover, could be recovered easily centrifugation used repetitively least four times. Copyright © 2022 Authors, Published BCREC Group. This an open access article CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).