Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1194823 | International Journal of Mass Spectrometry | 2009 | 5 Pages |
Abstract
The gas-phase electronic spectrum of cyclic-B3 (D3h) radical has been remeasured in a supersonic molecular beam using a mass-selective resonant 2-color 2-photon technique, leading to a revision of previously reported spectroscopic constants. The species was prepared by ablation of a boron nitride rod in the presence of helium. Ab intio calculations on the geometries and vertical electronic excitation energies, as well as mass identification, indicate that the detected band, centered at 21848.77(2) cmâ1, is the origin of the 22Eâ²âXË2Aâ²1 cyclic-11B3 system. A spectral fit yields the rotational constants as Bâ³Â = 1.2246(45) and Câ³Â = 0.62131(72) cmâ1 in the XË2Aâ²1 ground state, and Bâ²Â = 1.1914(44) and Câ²Â = 0.61173(69) cmâ1 in the excited 2 2Eâ² state.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Åukasz Chacaga, Evan B. Jochnowitz, Zohra Guennoun, Hongbin Ding, John P. Maier,