Synthesis, characterization, crystal structure and catalytic property of [Cu(SalAHE) 2] (SalAHE = salicylaldehydeimine-1-hydroxyethane) complex for the oxidation of 3,5-di- tert-butylcatechol

A new Schiff base copper(II) complex [Cu(SalAHE) 2] was synthesized and characterized. The crystal structure of this complex shows that it is almost coplanar with the two ligands in the trans configuration. This complex with a simple structure is able to oxidize 3,5-di- tert-butylcatechol to the res...

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Bibliographic Details
Published in:Polyhedron 2008-01, Vol.27 (1), p.59-64
Main Authors: Midões, Ana C.D., Aranha, Pedro E., dos Santos, Mirian P., Tozzo, Érica, Romera, Sandra, Santos, Regina H. de A., Dockal, Edward R.
Format: Article
Language:English
Subjects:
Catecholase activity
Copper complex
Crystal structure
Schiff base
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Summary:A new Schiff base copper(II) complex [Cu(SalAHE) 2] was synthesized and characterized. The crystal structure of this complex shows that it is almost coplanar with the two ligands in the trans configuration. This complex with a simple structure is able to oxidize 3,5-di- tert-butylcatechol to the respective o-quinone with molecular oxygen. The crystal structure, spectroscopic properties and catalytic property of the copper(II) complex, prepared by the reaction between copper(II) diacetate with the bidentate Schiff base, SalAHE (SalAHE = salicylaldehydeimine-1-hydroxyethane), are reported. This complex is able to oxidize 3,5-di- tert-butylcatechol to the respective o-quinone. The oxidation reaction was studied in CH 3CN with molecular oxygen at 0, 5, 15 and 25 °C. The progress of the catalytic reaction was followed by gas chromatographic analyses (GC).
ISSN:0277-5387
DOI:10.1016/j.poly.2007.08.030