Journal article

Electronic Spectra of Diacetylene Cations (HC4H ) Tagged with Ar and N-2

Giel Muller, Katherine J Catani, Michael S Scholz, Ugo Jacovella, Nastasia Bartlett, Evan J Bieske

JOURNAL OF PHYSICAL CHEMISTRY A | AMER CHEMICAL SOC | Published : 2019

Abstract

Electronic spectra of mass-selected HC4H+-Arn (n = 1-3) and HC4H+-(N2)n (n = 1-2) complexes are measured over the 290-530 nm range using resonance-enhanced photodissociation spectroscopy in a tandem mass spectrometer. Vibronic transitions in the visible region are compared with previous experimental and theoretical results for the Ã2Πu ← X̃2Πg band system of HC4H+. Hole burning experiments confirm that transitions over the 290-340 nm range involve the diacetylene cation (HC4H+). On the basis of previous experiments and comparison with spectra of isoelectronic molecules the peaks are assigned to the 22Πu ← X̃2Πg band system, with the origin transition for HC4H+-Ar occurring at 29723 cm-1. The..

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Grants

Awarded by Australian Research Council


Awarded by Swiss National Science Foundation


Funding Acknowledgements

This research was supported under the Australian Research Council's Discovery Project funding scheme (Project Nos. DP15010142 and DP160100474) as well as by Australian Government Research Training Program Scholarships. U. Jacovella acknowledges support from the Swiss National Science Foundation (P2EZP2_178429).