Theb1Σ+(b0+) →X3Σ−(X10+,X21) anda1Δ(a2) →X21 Transitions of SbF, SbCl, SbBr, and SbI

Born-Oppenheimer breakdown effects and hyperfine structure in the rotational spectra of SbF and SbCl

“…c Evaluated using Eq. (8) with the T 1 À T 0 values from [27]. d Estimated values obtained using Eq.…”

“…This has not been the case with their electronic spectra, which have been reported at both low and high resolution. This has been especially the case for SbF ( [3][4][5]27] and references therein). Studies of SbCl have been less extensive ( [21,27] and references therein).…”

“…This has been especially the case for SbF ( [3][4][5]27] and references therein). Studies of SbCl have been less extensive ( [21,27] and references therein). For both molecules the X 2 1 À X 1 0 + gap (T 1 À T 0 ) has been reported along with values of x e and x e x e .…”

Experimental and Theoretical Study of the Electronic States and Spectra of BiNa

“…Because of their low-lying metastable singlet states, molecules of these groups are of interest as energy carriers or reactants in chemical systems. During the last few years, a number of new b-X, a-X, and X 2 -X 1 transitions have been observed in Fourier transform emission and LIF studies (2)(3)(4)(5)(6)(7)(8), so that the X 3 ⌺ Ϫ (X 1 0 ϩ , X 2 1), a 1 ⌬(a2), and b 1 ⌺ ϩ (b0 ϩ ) states are now known for most of the 25 species. In parallel, ab initio SCF-CI calculations employing relativistic effective core potentials have been carried out for some of the heavy atom-containing molecules, and spin-orbit energy levels, vibrational constants, and bond lengths of the low-lying states as well as radiative lifetimes and transition probabilities of electric and magnetic dipole transitions have been predicted (9 -14).…”

“…The electronic states and spectra of the five monohydrides and 20 monohalides of group Va elements have been the subject of numerous studies (1,(2)(3)(4)(5)(6)(7)(8), and references cited therein). Their lowest lying electron configurations .…”