INFRARED BANDS OF ACETONE IN SOLID ARGON AND THE STRUCTURE-II CLATHRATE 2ACETYLENE-ACETONE-17WATER

The vibrational bands of acetone in solid argon and in the structure II 2acetylene/acetone/17water clathrates are presented. The results show that the band frequencies for enclathrated acetone are not greatly different from the unperturbed acetone frequencies. The acetone does not rotate on the IR time scale, and little evidence for site effects was observed (except for possibly lifting the degeneracy of an antisymmetric stretch of CH3). Both of the C-C stretches of acetone undergo small blue shifts, though the reason is unclear. © 1987 American Chemical Society.