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Journal Articles Physical Chemistry Chemical Physics Year : 2018

Dynamics of acetylene dimers hosted in helium droplets

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Abstract

The CH antisymmetric stretch of the C2H2 moieties in acetylene dimers was explored over the range 3270–3290 cm−1 using the helium nanodroplet isolation (HENDI) technique. This work is part of a general investigation which addresses the dynamical consequences of coupling the deformation motions of weakly bound complexes with a finite size quantum liquid (the helium droplet). The acetylene dimer is attractive from this point of view because one of its deformation coordinates promotes a tunneling isomerization process. A numerical simulation of the observed spectrum allows deriving a set of effective spectroscopic constants which help understanding the dynamical role played by the droplet on the rotation and deformation of the dimer.
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Dates and versions

cea-01713541 , version 1 (20-02-2018)

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M. Briant, E. Mengesha, M.-A. Gaveau, B. Soep, J.-M. Mestdagh, et al.. Dynamics of acetylene dimers hosted in helium droplets. Physical Chemistry Chemical Physics, 2018, 20 (4), pp.2597 - 2605. ⟨10.1039/C7CP07741F⟩. ⟨cea-01713541⟩
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