A new electronic transition of antimony chloride in the visible region

Abstract

The emission spectrum of SbCl has been photographed at high resolution in the region 400 to 640 nm. In addition to bands of two previously reported transitions in this region, A 1- X and A 2- X, 36 bands of a new system have been identified. A vibrational analysis has been made with ν 00 ≈ 20 679 cm −1, and 7 of the bands have been rotationally analyzed. The electronic transition has ΔΩ = 0 with lower state constants which match published data for the ground state X 3Σ −(0 +). The upper state is characterized by the following 121Sb 35Cl molecular parameters: B′ 0 = 0.0922 cm −1, D′ 0 = 3.1 × 10 −8 cm −1.