Dynamic IR spectroscopy is an established technique used to observe vibrational dynamics on the picosecond timescale.  In order for us to capture additional dynamics occurring in Raman active vibrational modes and to capitalize on the power of SERS, we have developed dynamic Raman as a complimentary technique.  We report on a model system, ?4-Fe(CO)3norbornadiene, which is known to undergo CO ligand site exchange on the vibrational timescale.  Employing IR and Raman spectroscopies, we have demonstrated the vibrational dynamics of CO ligand site exchange, and used simulations to extract the CO ligand exchange rates at various temperatures.  Also, for the first time, we directly compare dynamic IR and Raman spectroscopies.

Measuring vibrational dynamics with steady-state spectroscopy

244th National Meeting (2012)

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