Reactions of Imidogen Radical and Ethylene in Solid Xenon
Olson, Rebecca M.
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Imidogen, existing in both the lowest excited singlet NH(1∆) state or the ground triplet NH(3∑-) state, is an interesting radical which reacts differently depending on its spin multiplicity. A number of studies have been performed with the highly reactive and easily produced singlet NH while very little is known about the triplet NH due to difficulty of preparation. This chemistry is applicable to studies of the sun and the stars, but more fundamentally it may help explain the importance of spin multiplicity and electronic excitation in chemical reactions. In order to understand this reactivity, the chemistry between the imidogen radical and ethene are studied at cryogenic temperatures utilizing the matrix isolation technique. This technique traps highly reactive molecules like NH in a solid inert gas and allows infrared spectral studies of reaction products. Two products have formed from the NH and ethene reaction in Xe matrices upon photolysis from an UV source. Spectral evidence and possible mechanisms to explain this difference in reactivity will be discussed.