화학공학소재연구정보센터
Journal of Chemical Physics, Vol.100, No.6, 4156-4164, 1994
The B(-X Electronic-Spectra of N-2(+)-Ne(N) (1-Less-Than-or-Equal-to-N-Less-Than-or-Equal-to-8)
Spectra of (N2+20Ne)-N-14, N-14(2)+-Ne-22 and N-15(2)+-Ne-20 have been recorded in the region of the B-2 Sigma(u)(+)<--X(2) Sigma(g)(+) origin transition of N-2(+). Measurements are made by mass selecting cooled ionic complexes and photodissociating them whilst monitoring the N-2(+) fragment ion intensity as the laser wavelength is scanned. Various bands are assigned to transitions involving the stretching and bending motions of the Ne...Ne-2(+) bond with their structure and spacings consistent with transitions between quasilinear geometries in the X and the B states. Spectra of complexes with up to eight neon atoms attached to a N-14(2)+ core have also been measured. Evidence from shifts of the band origins and analysis of the vibrational frequencies of N-2(+)-Ne-2 and N-2(+)-Ne-3 suggest a structure where the Ne ligands are sited at one end of the N-2(+) chromophore.