15min:
INFRARED PHOTODISSOCIATION SPECTROSCOPY OF Cr2+(H2O)Arn AND Cr+(H2O)Ar COMPLEXES.

P. D. CARNEGIE, B. BANDYOPADHYAY AND M. A. DUNCAN, Department of Chemistry, University of Georgia, Athens, GA, 30602-2556.

Cr2+(H2O)Arn and Cr+(H2O)Ar complexes are generated via laser vaporization in a pulsed supersonic expansion source and analyzed by infrared photodissociation spectroscopy. The shifts in the OH stretching frequencies and IR intensities of the water on the doubly charged metal cation are compared to those of the singly charged species. Additionally, from rotationally resolved spectra the structures of the doubly and singly charged cationic complexes can be determined.