New measurements and global analysis of rotational spectra of Cl-, Br-, and I-benzene: Spectroscopic constants and electric dipole moments

作者：Dorosh Orest; Bialkowska Jaworska Ewa; Kislel Zbigniew^*; Pszczolkowski Lech

来源：Journal of Molecular Spectroscopy, 2007, 246(2): 228-232.

DOI：10.1016/j.jms.2007.09.010

• halogenobenzenes
• rotational spectroscopy
• supersonic expansion
• hyperfine structure
• global analysis
• electric dipole moments
• Stark effect

The data available from rotational spectroscopy for chlorobenzene, bromobenzene, and iodobenzene have been extended by new measurements in the mm-wave region and in supersonic expansion in the cm-wave region. All available ground state measurements have been combined in global fits to derive precise rotational, centrifugal, and nuclear quadrupole coupling constants for the molecules. Rotational transitions in first excited states of the lowest frequency normal modes in bromobenzene and iodobenzene have been assigned and fitted. The values of electric dipole moments for Cl-35-, Br-79-, Br-81-, and I-benzene have been determined from Stark effect measurements on selected hyperfine components in the supersonic expansion spectrum, and are compared with values for several other series of monohaloaen molecules.

• 出版日期2007-12