Resolution of the 14N Nuclear Quadrupole Hvperfine Structure in the Rotational Spectrum of Hydrazoic Acid, HN3, and Evaluation of the Rotational Constants of H15NNN and HNN15N

Abstract

Microwave Fourier transform spectra have been measured for hydrazoic acid as its normal isotopomer, H14N3, and two substituted isotopomers, H15N14N14N and H14N14N15N. The 14N quadrupole hyperfine structure has been resolved in all cases, and the quadrupole coupling constants of all 14N atoms have been determined. They are compared with those from ab initio predictions. Rotational constants A have been evaluated accurately for the first time for the two 15N species, and have been used to confirm a previously published structure