Li, JilaiGeng, CaiyunWeiske, ThomasSchwarz, Helmut2021-06-102021-06-102020-03-171433-7851https://depositonce.tu-berlin.de/handle/11303/13227http://dx.doi.org/10.14279/depositonce-12022Presented here is that isolated, long-lived electronic states of ReC+ serve as the root cause for distinctly different reactivities of this diatomic ion in the thermal activation of dihydrogen. Detailed high-level quantum chemical calculations support the experimental findings obtained in the highly diluted gas phase using FT-ICR mass spectrometry. The origin for the existence of these long-lived excited electronic states and the resulting implications for the varying mechanisms of dihydrogen splitting are addressed.en547 Organische Chemiegas-phase reactionsmetal carbidesnoble metalsrheniumtransition statesArticle1521-3773