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Laser Excitation Spectroscopy of theÃ3Πu–X̃3Σg−Transition of the NCN Radical. 2. The ν2Hot Band

✍ Scribed by Sara A. Beaton; John M. Brown

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
357 KB
Volume
183
Category
Article
ISSN
0022-2852

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✦ Synopsis

The (010)-(010) band of the A 3 Piu -X ; 3 Sigmag - transition of the NCN radical at 328 nm has been reexamined at Doppler-limited resolution by laser excitation spectroscopy. The molecule was generated in a microwave discharge through N2 and CF4 in helium. Both the 3 Deltag -3 Piu and the 3 Sigmag +/- -3 Piu vibronic components of the transition have been observed and rotationally analyzed. The Renner-Teller parameter, varepsilonomega2 , for NCN in the excited A 3 Piu state is determined to be -91.1213(16) cm-1 . Estimates for the ground and excited state bending vibrational wavenumbers of 437.7(14) and 533.95(70) cm-1 respectively have been obtained.

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