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Microwave spectrum of 1-bromobutane
Kim, J.,Jang, H.,Ka, S.,Obenchain, D.A.,Peebles, R.A.,Peebles, S.A.,Oh, J.J. Academic Press 2016 Journal of molecular spectroscopy Vol.328 No.-
The rotational spectrum of 1-bromobutane has been measured in the range of 8-18GHz using a 480MHz bandwidth chirped-pulse Fourier transform microwave (CP-FTMW) spectrometer. 1-bromobutane has five conformers; aa, ag, ga, gg, gg'. Spectra for the <SUP>79</SUP>Br isotopic species and <SUP>81</SUP>Br isotopic species were observed and assigned for the three lowest energy conformers, aa, ga, and gg. Consequentially, the rotational constants, nuclear quadrupole coupling constants, and centrifugal distortion constants were determined and the dipole moment of the aa conformer with <SUP>79</SUP>Br was measured. All the experimental data are in good agreement with the ab initio calculations.