Yilma Gultneh
Associate Professor of Chemistry
Analytical Chemistry
ygultneh@fac.howard.edu
202-806-6887 (Voice)
202-806-5442 (FAX)
B.S. 1969, Haile Sellasie University
M.S.1976, Northern Michigan University
Ph.D. 1981, Iowa State University of Science &Technology
Bioinorganic/Analytical Chemistry Interface: Syntheses, Characterization and Reactivity Studies of Multinuclear (Cluster) Transition Metal Complexes That Model Enzymes; Application in Analytical Chemical Methods
We synthesize and study the structures and the electronic, magnetic, electrochemical and redox catalytic properties of dinuclear and multinuclear complexes of Mn (such as the compound shown in the diagram, below) in efforts to sort out those features that help us to understand and then mimic the active sites of PS II and other multinuclear redox active Mn enzymes.
We synthesize , characterize and study the catalytic properties of a series of mono- and dinuclear complexes of Zn and Cu for the hydrolysis of phosphoesters. We examine the efficiency of Cu and Zn complexes whose structures have been well determined as catalysts for the hydrolysis of phosphate esters, esters, amides, nitriles, etc.
We study the applications of the properties of metal complexes as analytical tools such as selective detection and determinations of trace quantities of various ligand molecules (e.g., CO, NOx, SO2, SO3, O2) that are important, environmentally.
Representative Publications
Y. Gultneh & Ray J. Butcher, et al., "Synthesis, Structures, and Catalysis of Hydrolytic Reactions by Zinc(II) Complexes of Chelat-ing Ligands with Pyridyl Donors", J. Bioinorg. Chem., 1999, in press.
Yilma Gultneh & Ray J. Butcher, et al., "A Hydroxo- and Phenoxo-Bridged Dinuclear Nickel(II) Complex: Structure and Charac-terization", Polyhedron, 1998, 17, 3351-3360.
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