Date of Award

7-1-2005

Degree Type

Thesis

University or Center

Clark Atlanta University(CAU)

School

School of Arts and Sciences

Degree Name

M.S.

Department

Chemistry

First Advisor

Dr. Xiu (James) Bu

Second Advisor

Dr. Roosevelt Thedford

Third Advisor

Dr. James L. Reed

Abstract

This research effort is focused on the development of new transition-metal salencomplexes bearing bulky t-pentyl groups to further understand their role in the directing of substrates to the reactive metal centers. These new chiral and achiral transition-metal salen complexes also possess the ability to be novel asymmetrical catalysts. A series ofsalen ligands were prepared by the condensation of 3,5-di-t-pentyl salicylaldehyde with five different diamines: (1) 1,3-diamino-propan-2-01, (2) benzene-l,2-diamine, (3) ethylene-l,2-diamine, (4) (S,S)-1,2-diamino-l,2-diphenylethane, and (5) 1,2- diaminocyclohexane. These ligands were treated with transition metal salts to give the corresponding transition-metal salen complexes. As a result, five new systems with three crystal x-ray structures were obtained.

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