Rotational spectrum, structure and internal dynamics of the pyrrole·ammonia complex

A total of 14 and 12 a-type rotational lines for each isotopologue, respectively, were observed, exhibiting hyperfine structures due to 14N nuclear quadrupole coupling. From the spectra, rotational and centrifugal distortion constants as well as 14N nuclear quadrupole coupling constants were derived. The results are discussed in this paper in view of structural parameters and dynamical properties of the complex.