		15min:

THE MICROWAVE SPECTRUM AND STRUCTURE OF HNO₃-HCl.

MARK E. OTT, K. R. LEOPOLD, Department of Chemistry, University of Minnesota, 207 Pleasant St., SE, Minneapolis, MN 55455.

The microwave spectrum of HNO₃-HCl has been obtained via pulsed nozzle Fourier transform microwave spectroscopy. The spectrum is consistent with a planer or near-planer structure in which the HNO₃ hydrogen bonds to the chlorine and the O-H vector is nearly perpendicular to the H-Cl bond. Preliminary analysis indicates a hydrogen bond length of about 2.3 A, which is similiar to that in HCl--HF. The structure is compared with those of HNO₃-NH₃ and HNO₃-H₂O, both of which have been previously studied in our laboratory.