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The generation, detection and characterization of transition metal containing molecules associated with the modeling catalysis are the focus of our current research. Synthesis of new catalysts will only be accomplished when there is a clear understanding of the associated microscopic molecular steps. Theoretical insight, coupled with fundamental experimentation, can be most influential in modeling supported metal cluster and supported molecular catalyst used to process gaseous reagents and effluents (e.g. automobile emission) because of their very molecular nature. It is realistic that the reactions of a single metal atom, or possibly a metal dimer, with simple gaseous reagents are reasonable first order model systems for emulating metal cluster and molecular supported catalysis. These simple and highly quantifiable systems are the focus of the current and proposed research.