Abstract book - Prof. Per Jensen, Ph.D. - Bergische Universität ...

52 Poster session, D5The 2 and 4 bending fundamental bands of 15 ND 3Elisabetta Canè 1 , Gianfranco Di Lonardo 2 , Luciano Fusina 3 , GiandomenicoNivellini 4 , Filippo Tamassia 5 , Mattia Villa 61 Dpt. Chimica Fisica e Inorganica, Italy, elisabetta.cane@unibo.it; 2 Dpt. Chimica Fisicae Inorganica, Italy, gianfranco.dilonardo@unibo.it; 3 Dpt. Chimica Fisica e Inorganica,Italy, luciano.fusina@unibo.it; 4 Dpt. Chimica Fisica e Inorganica, Italy,gd.nivellini@gmail.com; 5 Dpt. Chimica Fisica e Inorganica, Italy,filippo.tamassia@unibo.it; 6 Dpt. Chimica Fisica e Inorganica, Italy,mattia.villa86@gmail.comCane E.Di LonardoFusina L.Nivellini G.Tamassia F.Villa M.Fourier transform spectra of 15 ND 3 have been recorded in the region between 450 and1600 cm -1 at a resolution of 0.005 cm -1 using the DA3.002 Bomem interferometer inBologna. Sample pressures of 0.6 and 10 torr were used in a 0.18 m absorption cell.About 1800 transitions, with J’ and K’ up to 15, have been assigned to the 2 and 4bending fundamentals observed in the recorded region. They connect the (s) and (a)inversion-rotation-vibration levels of the ground and excited states according to the (s)↔ (a) selection rule. All transitions have been analyzed simultaneously to provide aquantitative description of the inversion-rotational pattern of the v 2 =1 and v 4 = 1excited states. The adopted model Hamiltonian includes all symmetry-allowedinteractions between and within the excited states. The energies of the ground statelevels have been calculated by means of the precise spectroscopic parameters reportedby Fusina et al. 1 . The standard deviation of the fit, 0.00085 cm -1 , is about two times theestimated wavenumber precision. We plan to extend the analysis to J’ and K’ values upto 20, by recording new spectra using a multipass cell with optical path length up to 10m, in order to obtain results qualitatively similar to those available for 14 ND 3 2 .References[1] L. Fusina, M. Carlotti, G. Di Lonardo, S.N. Murzin, O.N. Stepanov J Mol.Spectrosc. 147, 71, 1991.[2] L. Fusina, G. Di Lonardo, J.W.C. Johns, J Mol. Spectrosc. 118, 397, 1986.