Synthesis, characterization, electrochemical properties and conversions of carbon dioxide to cyclic carbonates mononuclear and multinuclear oxime complexes using as catalyst


Kilic A., Palali A. A., Durgun M., Tasci Z., Ulusoy M., DAGDEVREN M., ...More

INORGANICA CHIMICA ACTA, vol.394, pp.635-644, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 394
  • Publication Date: 2013
  • Doi Number: 10.1016/j.ica.2012.09.020
  • Journal Name: INORGANICA CHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.635-644
  • Keywords: Oxime complexes, Mass spectra, Electrochemistry, Carbon dioxide, Cyclic carbonate, TRANSITION-METAL-COMPLEXES, REDOX PROPERTIES, ALTERNATING COPOLYMERIZATION, SPECTRAL CHARACTERIZATION, SCHIFF-BASE, CU-II, NI-II, PROPYLENE-OXIDE, SALEN COMPLEXES, STYRENE OXIDE
  • Istanbul Technical University Affiliated: Yes

Abstract

Unsymmetrical dioxime ligand and its mono- and multinuclear metal complexes were synthesized and characterized by H-1 and C-13 NMR spectra, FT-IR, UV-Vis, elemental analysis, melting point measurements, LC-MS spectroscopy, molar conductivity measurements and magnetic susceptibility and cyclic voltammetry techniques. We firstly prepared new unsymmetrical dioxime ligand (1) and its mononuclear [Ni(dioxime)(2)] complex (2). Then, the intramolecular O-H center dot center dot center dot O bridges are replaced with Cu(II)(N-N) complex to synthesize multinuclear [Ni(dioxime)(2)Cu-2(N-N)(2)](ClO4)(2) oxime complexes (3-7) where N-N = 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), 3,3'-dicarboxy-2,2'-bipyridine (dcbpy), 4,5-diazafluoren-9-one (dafo) and 1,10-phenanthroline-5,6-dione (dione). The mononuclear complex [Ni(dioxime)(2)] (2) was used as a precursor for building multinuclear oxime complexes (3-7). In this paper, our goal is to study spectroscopic, electrochemical and catalytic properties of this new ligand and its metal complexes. (C) 2012 Elsevier B. V. All rights reserved.