Methylene dianiline as a common starting material for the synthesis of a new series of highly multi-dentate ligands

INOR 174

Charlotte Hsu, chalotte72001@yahoo.com.tw, Ashley E. Gibbs, ashleyrun@excite.com, and Mark A Benvenuto, benvenma@udmercy.edu. Department of Chemistry & Biochemistry, University of Detroit Mercy, 4001 W. McNichols Rd., Detroit, MI 48221
A new series of ligands, all incorporating methylene dianiline, have been synthesized. All are either tetra-dentate moieties containing nitrogen or sulfur donor atoms or bis-bidentate ligands. The stability of these ligands as free molecules and as hydrochloride salts is presented, as is their solubility in various solvents. Attempts at a greener, solvent free synthesis will also be presented. Characterization has been primarily by NMR. This, as well as their metal binding abilities, will be discussed.