Measurement and revised analysis of the torsional combination band of the nonpolar N2O dimer at 2249 cm(-1).
The high-resolution infrared spectrum of the weakly-bound dimer (N(2)O)(2) is studied using a rapid-scan tunable-diode laser spectrometer to probe a pulsed supersonic jet expansion. An observed band with c-type rotational structure is assigned as a combination of the intramolecular N(2)O nu(1) stretching vibration and the intermolecular out-of-plane dimer torsional vibration, with a vibrational origin at 2249.360 cm(-1). The resulting torsional frequency for the nonpolar N(2)O dimer is about 21.5 cm(-1). The present rotational analysis is completely different from that reported previously for the same band [Hecker et al., Phys. Chem. Chem. Phys., 2003, 5, 2333], which gave a band origin some 1.53 cm(-1) lower.
Dehghany
M
M
Department of Physics and Astronomy, University of Calgary, 2500 University Drive, Calgary, Alberta, CanadaT2N 1N4.
Afshari
Mahin
M
Moazzen-Ahmadi
N
N
McKellar
A R W
AR
D003198:Computer Simulation; D019281:Dimerization; D007834:Lasers; D009609:Nitrous Oxide / Q000737:chemistry*; D012399:Rotation; D013055:Spectrophotometry, Infrared / Q000379:methods*; D054159:Torsion, Mechanical; D014732:Vibration
D009609:Nitrous Oxide