Ultra-violet absorption spectra of germanium monobromide and tin monobromide

Abstract

Absorption spectra of GeBr and SnBr have been photographed during the flash photolysis of GeBr4 and SnBr4. The spectrum of GeBr consists of the B2Σ–X2Π system between 280 and 320 nm and numerous new bands below 250 nm. The bands have been analyzed into several systems, the most prominent of which have the following parameters. State C: Te= 41 046 cm–1(relative to X2Π½). ωe= 359 cm–1, ωexe= 3 cm–1, A= 110 cm–1. State E: Te= 44 805 cm–1, ωe= 366 cm–1, ωexe= 5 cm–1, A∼0. State G: Te= 47 544 cm–1, ωe= 358 cm–1, ωexe= 1.5 cm–1. The spectrum of SnBr contains bands of the B2Σ—X2Π systems and a number of new band systems below 250 nm, the analyses of which are discussed.