Knowledge Bank

The vibrational spectra of the $aniline-NH3$ and the $aniline-N(CH3)3$ clusters in the NH-stretching vibration region have been measured using IR-UV double resonance spectroscopy and REMPI-TOF mass spectrometry. The main interaction of these clusters have been found to be the hydrogen bond between one of the NH bonds of aniline and the lone pair electron of the nitrogen atom of $NH3orN(CH3)3$ from the analysis of the vibrational spectra. Fernandez and Bernstein [1] showed that there are several origins of the observed bands in the REMPI spectrum of the $aniline-NH3$ cluster around 300nm, and assigned them to the vdW isomers. The infrared hole burning spectroscopy has shown that all of the bands observed around 300nm should be assigned to the same hydrogen-bonded cluster. The different band systems should be assigned to the hot 1) J.A. Fernandez and E.R. Bernstein, J. Chem. Phys., 106, 3029-3037 (1997).