Abstract
The kinetic-energy-dependent cross section for the reaction of Nd+ with D2 was studied by using a guided ion beam tandem mass spectrometer. The formation of NdD+ is endothermic, and analysis of the reaction cross section gave an NdH+ 0 K bond dissociation energy (BDE) of 1.99 ± 0.06 eV. Theoretical calculations for the NdH+ BDE were performed for comparison with the experimental thermochemistry and generally gave accurate results. Additionally, relaxed potential energy surfaces for NdH2+ were performed, and no strongly bound dihydride intermediate was located. The Nd+ + D2 reactivity and BDE of NdH+ are compared with analogous results for the lanthanide cations La+, Ce+, Pr+, Sm+, Gd+, and Lu+ to establish periodic trends and insight into the role of the electronic configurations on this reactivity and the lanthanide hydride cation bond strengths.
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