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MO: Fachverband Molekülphysik
MO 20: Poster – Molecular Spectroscopy and Dynamics
MO 20.12: Poster
Wednesday, March 12, 2025, 17:00–19:00, Tent
Dynamics of the activation of small molecules by zirconium cations in the gas phase — •Boris Heeb, Marcel Meta, and Jennifer Meyer — RPTU Kaiserslautern-Landau, Fachbereich Chemie und Landesforschungszentrum OPTIMAS, Kaiserslautern, Germany
The reaction of Zr+ with CH4 in the gas phase proceeds efficiently to the carbene ZrCH2+ at room temperature with a two-state reactivity along the reaction coordiante [1]. To investigate the bond activation of CH4 by Zr+, energy and angle differential cross sections were recorded by crossed-beam velocity map imaging. The product ion velocity distribution is dominated by signatures of indirect dynamics commonly associated to a small impact parameter. Additional scattering events outside the kinematic limits are found, which largely disappear when switching to CD4. A comparison with the reactions Ta+ + CH4 and Ta+ + CD4 show almost identical energy and angular distributions [2]. Continuing experiments with 1-butene show three product channels, whereby a mainly forward-scattered distribution is observed for the loss of H2, which supports the considerations.
Keywords: Gas phase; Velocity map imaging; Ion-molecule reactions; Methane activation