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Two-dimensional Time-Frequency Ultrafast Infrared Vibrational Echo Spectroscopy

Two-dimensional Time-Frequency Ultrafast Infrared Vibrational Echo Spectroscopy

K A Merchant, D E Thompson, M D Fayer

Phys Rev Lett. 2001 Apr 23;86(17):3899-902.

PMID: 11329352

Abstract:

2D spectrally resolved ultrafast (<200 fs) IR vibrational echo experiments were performed on Rh(CO)(2)acac [(acetylacetonato)dicarbonylrhodium (I)]. The 2D spectra display features that reflect the 0-1 and 1-2 transitions and the combination band transition of the symmetric (S) and antisymmetric (A) CO stretching modes. Three oscillations in the data arise from the frequency difference between the S and A modes (quantum beats) and the S and A anharmonicities. A new explanation is given for these "anharmonic" oscillations. Calculations show that spectral resolution enables the 0-1 and 1-2 dephasing to be measured independently.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP14874829	(Acetylacetonato)dicarbonylrhodium(I)		14874-82-9	Price

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