Synthesis, characterization and X-ray crystal structure of novel nickel Schiff base complexes and investigation of their catalytic activity in the electrocatalytic reduction of alkyl and aryl halides

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Título: Synthesis, characterization and X-ray crystal structure of novel nickel Schiff base complexes and investigation of their catalytic activity in the electrocatalytic reduction of alkyl and aryl halides
Autor/es: Ourari, Ali | Bougossa, Imène | Bouacida, Sofiane | Aggoun, Djouhra | Ruiz-Rosas, Ramiro | Morallon, Emilia | Merazig, Hocine
Grupo/s de investigación o GITE: Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales
Palabras clave: Bidentate Schiff base nickel(II) complexes | X-ray diffraction | Electrochemical behavior | Electrocatalytic reduction
Área/s de conocimiento: Química Inorgánica | Química Física
Fecha de publicación: mar-2017
Editor: Springer Berlin Heidelberg
Cita bibliográfica: Journal of the Iranian Chemical Society. 2017, 14(3): 703-715. doi:10.1007/s13738-016-1022-8
Resumen: Novel potentially bidentate NO Schiff base ligands, HL1 and HL2 derived from condensation reaction of 2′-methoxyphenyl-2-ethylamine with salicylaldehyde (HL1) and with 2-hydroxy-4-methoxybenzaldehyde (HL2), and their nickel complexes were synthesized and characterized by usual spectroscopic techniques such as FT-IR, UV–Vis, 1H NMR, 13C NMR and elemental analysis. It was revealed that the bidentate Schiff base ligands coordinate with Ni(II) ions yielding mononuclear complexes with 1:2 (metal/ligand) stoichiometry. This result has been determined by using X-ray crystallographic technique of HL2 and the nickel complex derived from HL1(Ni(II)-2L1). So, the structural studies showed that the two Ni(II) complexes adopt a square-planar geometry around the central metal ion. Cyclic voltammetry studies were investigated in 0.1 M TBAP in DMF solution and indicate that the nickel complexes show one reduction wave related to Ni(II)/Ni(I) redox couple. The electrocatalytical properties of these complexes were also studied in the same electrolyte medium. Their electrocatalytic performances have been tested toward the electroreduction reaction of bromocyclopentane and iodobenzene, showing a promoted activity in the case of the Ni(II)-2L2 complex.
Patrocinador/es: The authors would like to thank the Algerian Ministère de l’Enseignement Supérieur et de la Recherche Scientifique et la Direction générale de la Recherche and Ministerio de Economía y Competitividad for financial support (MAT2013-42007-P). RUIZ-ROSAS Ramiro thanks Spanish Ministry of Economy and Competitiveness (MINECO) for a “Juan de la Cierva” contract (JCI-2012-12664).
URI: http://hdl.handle.net/10045/66573
ISSN: 1735-207X (Print) | 1735-2428 (Online)
DOI: 10.1007/s13738-016-1022-8
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © Iranian Chemical Society 2016
Revisión científica: si
Versión del editor: http://dx.doi.org/10.1007/s13738-016-1022-8
Aparece en las colecciones:INV - GEPE - Artículos de Revistas
INV - MCMA - Artículos de Revistas

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