Vibration-rotation-tunneling spectroscopy of the van der Waals Bond: A new look at intermolecular forces

Journal Article · Thu Feb 06 04:00:00 EST 1992 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100182a006· OSTI ID:381785

Cohen, R C; Saykally, R J ^[1]

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1. Harvard Univ., Cambridge, MA (United States)

Measurements of the low-frequency van der Waals vibrations in weakly bound complexes by high-resolution laser spectroscopy provide a means to probe intermolecular forces at unprecedented levels of detail and precision. Several new methods are presently being used to record vibration/rotation-tunneling (VRT) transitions associated with the motions of the weak bonds in van der Waals clusters. The most direct measurements are those probing only the van der Waals modes themselves, which occur at far-infrared wavelengths. This article presents a review of the information on both intramolecular forces and intramolecular dynamics that has been obtained from far-infrared VRT spectra of 18 complexes during the past several years. Some rotationally resolved measurements of van der Waals modes observed in combination with electronic or vibrational excitation are also discussed. 185 refs., 15 figs., 1 tab.

• Sponsoring Organization: USDOE
• OSTI ID: 381785
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 3 Vol. 96; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
INTERMOLECULAR FORCES
LASER SPECTROSCOPY
MOLECULES
ROTATIONAL STATES
VAN DER WAALS FORCES
VIBRATIONAL STATES