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Laboratory observation of the rotation-vibration spectrum of gas-phase C5

✍ Scribed by N. Moazzen-Ahmadi; A.R.W. McKellar; T. Amano

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 308 KB
Volume: 157
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87196-9

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✦ Synopsis

The highest asymmetric stretching fundamental ( y3 ) of the gas-phase linear carbon chain C, has been detected in the laboratory using a cooled hollow-cathode discharge in C2H2+He or C2H4+He mixtures with a tunable diode laser spectrometer. Our work was guided by recent matrix-isolation and astronomical observations of this band. We have measured a total of 59 lines with J values ranging from 0 to 72. A small local perturbation is observed to affect upper-state energy levels around P ~41. The measurements are analyzed to give accurate values of the band origin and the ground-and excited-state rotational parameters.

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