Leak-out spectroscopy as alternative method to rare-gas tagging for the Renner-Teller perturbed HCCH⁺ and DCCD⁺ ions.

ABSTRACT: Infrared messenger-tagging predissociation action spectroscopy (IRPD) is a well-established technique to record vibrational spectra of reactive molecular ions. One of its major drawbacks is that the spectrum of the messenger-ion complex is taken instead of that of the bare ion. In particular for small open-shell species, such as the Renner-Teller (RT) affected HCCH⁺ and DCCD⁺, the attachment of the tag may have a significant impact on the spectral features. Here we present the application of the novel leak-out spectroscopy (LOS) as a tag-free method to record the cis-bending of the HCCH⁺ (∼700 cm^-1) and DCCD⁺ cations (∼520 cm^-1), using a cryogenic ion trap end user station at the FELIX laboratory. We demonstrate that

SUBMITTER: Steenbakkers K 

PROVIDER: S-EPMC10793980 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature