Infrared and Microwave Molecular-Beam Studies of N2O5

✍ Scribed by J.L. Domenech; G.T. Fraser; A.R.Hight Walker; W.J. Lafferty; R.D. Suenram

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 141 KB
• Volume: 184
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7323

✦ Synopsis

Rotational spectra of the r P 0 and r R 0 b-type subbands of N 2 O 5 for both internal rotor states were recorded using a pulsed-nozzle Fourier-transform microwave spectrometer. The present measurements extend our previous results on N 2 O 5 which were confined to the r R 0 , r R 1 , r Q 1 , and r P 1 , b-type subbands due to limitations in the frequency coverage of the instrument. The present measurements provide new energy-level differences which give a nearly complete experimental picture of the K Å 0, 1, and 2 energy levels. The measurements also support our previous picture of N 2 O 5 as a C 2 symmetry molecule with facile geared internal rotation of the two equivalent NO 2 groups. Infrared spectra of the 1246 cm 01 , n 12 , N-O stretching fundamental band of N 2 O 5 were also recorded using a lead-salt diode-laser spectrometer and a slit-jet nozzle molecular-beam apparatus. The spectra reveal a complex resolved rotational structure which is at present unanalyzed.