Photodissociation of CS2 in the Vacuum Ultraviolet; Determination of D0° (SC—S)

摘要: It has been shown that a major primary photochemical process of CS2 in the vacuum ultraviolet is reaction, CS2→ lim hνCSA 1Π +S3P2, apparent violation spin conservation rule. From threshold energy incident photons required to produce fluorescence, CS A 1Π ‐X 1Σ, D0° (SC—S) = 4.463± 0.014 eV or 102.9 ± 0.32 kcal/mole obtained excellent agreement with value derived previously from photoionization CS2. Other related thermochemical data are and compared those by various methods. The fluorescence excitation spectrum shows peaks corresponding Rydberg series I II, indicating above reaction mainly result predissociation states. efficiencies became quite small photon energies first ionization potential A 1Π produced 1236 line photolysis vibrational levels populated up v′=5. absorption coeffici...