Real-time observation of intra- and intermolecular vibrational energy flow of 
selectively excited alkyl iodides in solution: The effect of chemical 
substitution

Assmann, J.; Charvat, A.; Schwarzer, D.; Kappel, C.; Luther, K.; Abel, B.

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Real-time observation of intra- and intermolecular vibrational energy flow of selectively excited alkyl iodides in solution: The effect of chemical substitution

MPG-Autoren

/persons/resource/persons14797

Assmann, J.
Department of Spectroscopy and Photochemical Kinetics, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons14938

Charvat, A.
Department of Spectroscopy and Photochemical Kinetics, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons15808

Schwarzer, D.
Research Group of Reaction Dynamics, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons15478

Luther, K.
Department of Spectroscopy and Photochemical Kinetics, MPI for biophysical chemistry, Max Planck Society;

Abel, B.
Max Planck Society;

Externe Ressourcen

Es sind keine externen Ressourcen hinterlegt

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Es sind keine frei zugänglichen Volltexte in PuRe verfügbar

Ergänzendes Material (frei zugänglich)

Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Zitation

Assmann, J., Charvat, A., Schwarzer, D., Kappel, C., Luther, K., & Abel, B. (2002). Real-time observation of intra- and intermolecular vibrational energy flow of selectively excited alkyl iodides in solution: The effect of chemical substitution. Journal of Physical Chemistry A, 106(21), 5197-5201. Retrieved from http://pubs.acs.org/doi/pdfplus/10.1021/jp015552y.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0012-F3BB-C

Zusammenfassung

Intramolecular vibrational energy redistribution (IVR) and intermolecular vibrational energy transfer (VET) of two alkyl iodides (CF3CH2I and CH3CH2-I) selectively excited in the two quanta overtone region of the CH stretch vibration (upsilon(CH) = 2) were measured in real time in solution. In this study, we have focused on the effect of chemical substitution on the mechanisms and time scales of IVR and VET of this family of molecules. With a simple model. we have obtained global IVR and VET rate coefficients for both molecules. The magnitude and the variation of the relaxation rates upon chemical substitution provide evidence for a survival of hierarchical IVR in these solvated molecules. which is governed by specific low-order intramolecular interactions and which can be rationalized with a simple low-order coupling model. At the same time, the general assumption that VET is simply dominated by the lowest- frequency modes in a molecule is not supported.