Angewandte Chemie International Edition · 2000 · 10 citations · 0 references
Natural SciencesChemistryPhysicsChemical KineticsMolecular PhysicsSpectroscopyIonization ProcessesNuclear DecayCollision-induced DissociationCoupled-cluster CalculationsHigh-energy Collision DynamicsIon-atom CollisionsIon-molecule CollisionsPotential Energy Surface AnalysisPotential Energy Surface Scans
A minimal lifetime of microseconds is displayed by the dication GeH2+, which has been detected for the first time as the product of charge-stripping experiments at 8 kV involving [GeH2]+ and O2. Coupled-cluster calculations suggest that XH2+ (X=Si, Ge) are both metastable with respect to internal conversion and dissociation via X+ and H+. The picture shows a potential energy surface scan of GeH2+ (—) and the corresponding Coulomb repulsion asymptote (- - - -).