Electrocatalytical reduction of bromocyclopentane and iodobenzene using Cobalt(III) and Nickel(II) Tris- and Bis-bidentates Schiff Bases Complexes

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Title: Electrocatalytical reduction of bromocyclopentane and iodobenzene using Cobalt(III) and Nickel(II) Tris- and Bis-bidentates Schiff Bases Complexes
Authors: Ourari, Ali | Alouache, Amina | Aggoun, Djouhra | Ruiz-Rosas, Ramiro | Morallon, Emilia
Research Group/s: Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Bidentate Schiff base | Bis-bidentate Nickel(II) complex | Tris-bidentate cobalt(III) complex | Cyclic voltammetry | Homogeneous electrocatalysis
Knowledge Area: Química Física
Issue Date: 10-May-2018
Publisher: ESG
Citation: International Journal of Electrochemical Science. 2018, 13(6): 5589-5602. doi:10.20964/2018.06.39
Abstract: The following bidentate Schiff base: 2-[(4-Methoxybenzyl)iminomethyl]-phenol (HL), was employed as an asymmetric ligand in the synthesis of two mononuclear nickel(II) and cobalt(III) complexes (Ni(II)-2L and Co(III)-3L). This ligand has been synthesized via condensation of salicylaldehyde and 4-methoxybenzylamine in methanolic solution, while the both complexes result from complexation of metal(II) chloride hydrate salts with HL. These coordination compounds were structurally characterized by elemental analysis, FT-IR, UV-Vis, 1H NMR and 13C NMR spectral studies. Moreover, the electrochemical properties of both complexes were studied by cyclic voltammetry in DMF solution containing 0.1 M tetra-n-butylammonium tetrafluoroborate (Et4NBF4). This study reveals that each complex showed successively two redox couples: M(III)/M(II) and M(II)/M(I). Finally, the electrocatalytic activity of these complexes has been examined and it has been found that the both complexes worked as effective homogeneous electrocatalysts for the electroreduction of bromocyclopentane and iodobenzene using glassy carbon as working electrode.
Sponsor: The authors would like to thank the MESRS and DG–RSDT (Ministère de l’Enseignement Supérieur et de la Recherche Scientifique et la Direction Générale de la Recherche - Algérie) for financial support. This work is supported by the Ministerio de Economia y Competitividad (MAT2016-76595-R).
URI: http://hdl.handle.net/10045/76009
ISSN: 1452-3981
DOI: 10.20964/2018.06.39
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 The Authors. Published by ESG (www.electrochemsci.org). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
Peer Review: si
Publisher version: https://doi.org/10.20964/2018.06.39
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