SPIN-ORBIT COUPLING EFFECTS IN BRO- AND HOBr PHOTODISSOCIATION REACTIONS

Abstract

Potential energy curves of the ground and a few excited states of the BrO- and HOBr along the photodissociation reactions, which correlate with lower dissociation limits are obtained on the base of calculations results by ab initio method. The singlet-triplet nonadiabatic transition with dissociation of the ground Х1S+ state to lower limit О(3Р) + Br-(1S) is predicted on the basis of calculations results. The ground singlet Х1S+ state of the BrO- has predissociative and metastable character for the upper vibrational levels. It is shown that the singlet-triplet transition to the lower triplet state a3A²¬X1A¢ is responsible for a weak HOBr absorption in the visible region (440–650 nm).