ExoMol line lists – XLVII. Rovibronic spectrum of aluminium monochloride (AlCl)

ABSTRACT A line list for two isotopologues of aluminium monochloride, Al35Cl and Al37Cl, is presented covering the wavelength range <0.2 µm, J up to 400, applicable temperatures 5000 K. The lists are built using an empirical spectroscopic model consisting potential energy curves, spin–orbit coupling electronic angular momentum Born–Oppenheimer breakdown correction curves combined with ab initio dipole moments cover four lowest states, ${X}\, ^1\Sigma ^+$, ${A}\, ^1\Pi$, ${a}\, ^3\Pi$, ${b}\, ^3\Sigma ^+$. Considerable problems assignments some laboratory rovibronic spectra identified. Treatment states lying in continuum discussed. YNAT available from ExoMol data base at www.exomol.com.