15min:

LUIS GOMEZ, EVGENIY LOGINOV, DMITRY SKVORTSOV, HIROMICHI HOSHINA AND ANDREY F. VILESOV, Department of Chemistry, University of Southern California, Los Angeles, CA 90089-0482.

The infrared spectra of ethane molecules embedded in He droplets have been studied via depletion spectroscopy in the = 2880-3000 cm^-1 spectral range. Four features observed in the spectra are assigned as the ₅, ₈₊₁₁(perpendicular and parallel components), and ₇ vibrational bands. Band origins and rotational constants for ethane in He are obtained and compared with corresponding gas phase values. Spectra of large ethane clusters (C₂H₆)_alicizen (with alicizen = 1300-13000) in He are also reported.