Accession Number:

ADA141379

Title:

Supersonic Molecular Jet Studies of Toluene-Helium and Toluene-Methane Clusters.

Descriptive Note:

Technical rept.,

Corporate Author:

COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1984-05-15

Pagination or Media Count:

41.0

Abstract:

The techniques of fluorescence excitation FE, dispersed emission DE, and 1- and 2-color time of flight mass spectroscopy TOFMS have been employed to study van der Waals clusters of toluene-helium To1He and toulene-methane TolCH4 formed in a supersonic molecular jet. Spectral shifts for the toluene 1 A sub 1 to 1 B sub 2 transition have been characterized for TolHe1,2 and To1CH41,2. The van der Waals stretching frequencies V1 in the excited states of these clusters have been identified. The ground state stretch V1 for TolHe has also been found it is quite similar to the TolHe V1. The binding energies Do for Tol-He clusters lie between 75 and 90cm and those for Tol-CH4 clusters lie between 533 and 739cm. The coordination of a third solvent molecule to those clusters generates a broad spectrum whose shift is close to the limiting value for a large X greater than cluster. A comparison between these data and methane solution data is presented.

Subject Categories:

  • Fluid Mechanics
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE