A novel nickel(II) complex obtained from 2-[(3-bromo-propylimino)-methyl]-phenol as a ligand: synthesis, structural characterization, electrochemical and electrocatalytical investigations

作者：Ourari Ali^*; Zoubeidi Chahinaz; Derafa Wassila^*; Bouacida Sofiane; Merazig Hocine; Morallon Emilia

来源：Research on Chemical Intermediates, 2017, 43(5): 3163-3182.

DOI：10.1007/s11164-016-2817-z

• Schiff base ligand
• Ni(II) complex
• X-ray diffraction
• Cyclic voltammetry
• Redox electrocatalytical properties

Herein, we describe the synthesis of novel bidentate Schiff base ligand 2-[(3-bromo-propylimino)-methyl]-phenol (HL) and its Ni(II) complex in 2:1 (ligand:metal) ratio. The synthesized ligand (HL) and its Ni(II) complex were characterized using routine spectroscopic techniques like microanalysis, UV-visible absorption spectroscopy, FT-IR, NMR (H-1 and C-13). A suitable single crystal of the nickel complex was obtained from acetone solution by slow evaporation and studied by X-ray diffraction to determine its molecular structure. The crystallographic data of the obtained Ni(II)-2L complex revealed that it possesses a monoclinic space group P 21/n with cell dimensions of a = 10.6818(2) , b = 7.1071(1) , c = 13.7925(3) , beta = 105.51(1)A degrees, Z = 4. The electrochemical investigation of both ligand and its Ni(II)-2L complex was carried out by cyclic voltammetry. The cyclovoltammograms showed two redox systems, Ni(II)/Ni(I) and Ni(III)/Ni(II). Interestingly, it was revealed that the Ni(II)-2L complex can be polymerized into its poly-[Ni(II)-2L] films, and electrodeposited onto glassy carbon. The resulting Ni(II)/Ni(I) and Ni(III)/Ni(II) redox systems were advantageously used. The first one was used in the electroreduction of bromocyclopentane while the second one Ni(III)/Ni(II) is rather applied to oxidize methanol.

• 出版日期2017-5