Synthesis and characterization of tetradentate Schiff base manganese(II) and manganese(III) complexes

• Grant number: 06/05726-6
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2007
• End date: December 31, 2007
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Edward Ralph Dockal
• Grantee: Otávio Contart Gamboni
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Transition metal complexes participate in many chemical processes. The study of these complexes is very interesting because of the diversified chemistry and for their great utility. Transition metal complexes act as catalysts in various homogenous and heterogeneous systems. The catalytic activity of these complexes is due to the presence of only one active site for the catalytic reaction. Thus this type of reaction can be advantageous due to the elevated selectivity of the metal center. For these reasons, the object of this project is the systematic study involving various series of salen-type Schiff base manganese(II) and manganese(III) complexes. The object of the use of these complexes as catalysts is not only an increase in the yield but also the stereoselectivity of the reaction products. The new catalysts will be initially characterized by various techniques such as their visible-ultraviolet and infrared spectra, and whatever other technique that is considered necessary. In the same way, the substrates used in this project will be previously characterized. The catalytic reaction should be carried out in flasks and the progress of the reaction monitored by gas chromatography. The products of the reactions also will characterized by what techniques deemed necessary.