High resolution laser spectroscopy of the titanium monohalides, TiCl and TiBr

The electronic spectra of the titanium monohalides, TiCl and TiBr, have been investigated in the blue-violet region using a laser ablation molecular beam spectrometer. Five subbands assigned as (4)Gamma(5/2)-X-4 Phi(3/2) (0, 0), (4)Gamma(5/2)- X-4 Phi(3/2) (1, 1), (4)Gamma(5/2)-X-4 Phi(5/2) (0, 0), (4)Gamma(7/2)-X-4 Phi(5/2) (0, 0) and (4)Gamma(7/2)-X-4 Phi(7/2) (0,0) were observed and recorded at both low and high-resolution for titanium monochloride. A Hund's case (a) rotational analysis has been carried out for the Ti-48 Cl-37 and (TiCl)-Ti-48-Cl-35 isotopic species, and polynomial analyses for these, as well as the (TiCl)-Ti-46-Cl-35, (TiCl)-Ti-47-Cl-35, (TiCl)-Ti-49-Cl-35, and (TiCl)-Ti-50-Cl-35 isotopologues have been completed. The same spectral region yielded several molecular transitions for titanium monobromide, 10 of which were recorded at high resolution. Six of these have been attributed to a (4)Gamma-X-4 Phi electronic transition at 23 484 cm(-1), while the remaining four have been assigned to a second (4)Gamma-X-4 Phi electronic transition at 23 613 cm(-1). A Hund's case (a) global analysis has been carried out for the (TiBr)-Ti-48-Br-79 and (TiBr)-Ti-48-Br-81 isotopologues. (C) 2005 Elsevier Inc. All rights reserved.