Synthesis, Spectroscopy and Electrochemical Behaviors of Nickel(ii) Complexes With Tetradentate Shiff Bases Derived From 3,5-bu<sub>2</Sub><i><sup>t<

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2005

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Pergamon-elsevier Science Ltd

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Chemical Engineering
(2010)
Established in 2010, and aiming to train the students with the capacity to meet the demands of the 21st Century, the Chemical Engineering Department provides a sound chemistry background through intense coursework and laboratory practices, along with fundamental courses such as Physics and Mathematics within the freshman and sophomore years, following preparatory English courses.In the final two years of the program, engineering courses are offered with laboratory practice and state-of-the-art simulation programs, combining theory with practice.

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Abstract

Nickel(II) complexes of a series of N,N'-polymethylenebis(3,5-Bu'(2)-salicylaidimine) ligands containing 2,4-di-Bu'(2)-phenol arms, NiLx, were synthesized and their spectroscopic and redox properties were examined. The UV-vis, H-1 NMR spectroscopic and magnetic results indicate that complexes NiL1-NiL4 unlike NiL5 and NiL6 have a square-planar structure in the solid state and in solution. Cyclic voltammograms of NiLx (x= 1-4) complexes displayed two-step oxidation processes. The first oxidation peak potentials of all Ni(II) complexes corresponds to the reversible one-electron oxidation process of the metal center, yielding Ni(III) species. The second oxidation peak of the complexes was assigned as the ligand based oxidation generating a coordinated phenoxyl radical species. (c) 2005 Elsevier B.V. All rights reserved.

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Ozalp Yaman, Seniz/0000-0002-4166-0529

Keywords

N,N '-polymethylenebis(3,5-Bu '(2)-salicylaidiminato)nickel(II), spectroscopy, electrochemistry

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37

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Volume

62

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1-3

Start Page

716

End Page

720

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