Dillinger Sebastian, Klein Matthias P, Steiner Annika, McDonald David C, Duncan Michael A, Kappes Manfred M, Niedner-Schatteburg Gereon
Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany.
Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States.
J Phys Chem Lett. 2018 Feb 15;9(4):914-918. doi: 10.1021/acs.jpclett.8b00093. Epub 2018 Feb 8.
We present the cryo IR-PD spectra of the coadsorbed [Ru(H)(N)] and [Ru(N)(H)] species differing in the adsorption sequence of H and N, which we record via application of tandem cryo ion trapping. We observe strong evidence for dissociative H adsorption, and the spectra reveal differences in the Ru-H stretching region, which we assign to distal and proximal hydrogen atom locations on the Ru cluster, their migration likely hindered by preloaded nitrogen molecules and unaffected by subsequent N adsorption.
我们展示了共吸附的[Ru(H)(N)]和[Ru(N)(H)]物种的低温红外光解离光谱，这两种物种在H和N的吸附顺序上有所不同，我们通过串联低温离子捕获技术进行记录。我们观察到了离解性H吸附的有力证据，光谱显示了Ru-H伸缩区域的差异，我们将其归因于Ru簇上氢原子的远端和近端位置，它们的迁移可能受到预加载的氮分子的阻碍，并且不受后续N吸附的影响。
