Dynamics of hydrogen-bonded OH stretches as revealed by single-mode infrared-ultraviolet laser double resonance spectroscopy on supersonically cooled clusters of phenol.
The hydrogen-bonded (H-bonded) OH stretching vibrations in the electronic ground state of jet-cooled phenol-H(2)O, phenol-methanol, and phenol-NH(3) clusters have been measured with high-resolution double resonance spectroscopy using single-mode IR and UV lasers. All the observed H-bonded OH bands are homogeneously broadened, and the corresponding bandwidths are obtained by curve fitting the observed spectra to Lorentzian functions. In comparison with the result of time-resolved experiments [Phys. Chem. Chem. Phys. 9, 1170 (2007)], it is found that there is a quantitative correlation between the bandwidth and the vibrational frequency shift upon the complex formation. It seems that the observed phenomena can be explained by considering the potential coupling between the intramolecular and intermolecular vibrational modes.
Doi
Atsushi
A
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan. a.doi@kwansei.ac.jp
Mikami
Naohiko
N