T. Nakanaga et al., INFRARED DEPLETION SPECTROSCOPY OF ANILINE-NH3 AND ANILINE-NH3+ CLUSTERS IN A SUPERSONIC JET, Chemical physics letters, 267(5-6), 1997, pp. 491-495
The vibrational spectra of aniline-NH3 and aniline-NH3+ clusters in th
e NH stretching vibration region have been measured using infrared dep
letion spectroscopic techniques combined with mass spectrometry. There
are two strong absorption bands at 3354 and 3479 cm(-1) in the spectr
um of aniline-NH3 They have been assigned to the stretching vibrations
of the NH2 group of aniline. One of the NH bonds of aniline interacts
with the lone pair of the nitrogen atom of NH3 through the hydrogen b
ond. The spectrum of aniline-NH3+ gives only one strong absorption at
3419 cm(-1). This band has been assigned to the stretching vibration o
f the free NH bond of aniline. The hydrogen bond in the cation cluster
has been found to be much stronger than that in the neutral cluster.