In:
The Journal of Chemical Physics, AIP Publishing, Vol. 147, No. 8 ( 2017-08-28)
Abstract:
The B̃1A1←X̃1A1 electronic band system of the protonated diacetylene cation (H2C4H+) is measured over the 230–295 nm range by photodissociating H2C4H+ ions stored in a cryogenic ion trap and by photodissociating H2C4H+ tagged with Ar and N2 in a tandem mass spectrometer. The B̃1A1←X̃1A1 band system has an origin at 34 941 cm−1 for H2C4H+, 34 934 cm−1 for H2C4H+–Ar, and 34 920 cm−1 for H2C4H+–N2. The spectra of H2C4H+, H2C4H+–Ar, and H2C4H+–N2 display similar vibronic structure, which is assigned using ab initio calculations to progressions in two symmetric a1 C–C stretch vibrational modes (ν6 and ν4), with band spacings of 860 and 1481 cm−1, respectively.
Type of Medium:
Online Resource
ISSN:
0021-9606
,
1089-7690
Language:
English
Publisher:
AIP Publishing
Publication Date:
2017
detail.hit.zdb_id:
3113-6
detail.hit.zdb_id:
1473050-9
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