Microwave spectroscopic study of the SiF3 radical: Spin-rotation interaction and molecular structure

Material type: 文書・図像類

Author: TANIMOTO, Mitsutoshiほか

Publisher: American Institute of Physics

Publication date: 1999-11

Material Format: Digital

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Note (General)：: The trifluorosilyl radical has been produced by glow discharge in hexafluorodisilane in a free space cell. The rotational spectrum of the radical has ...

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Material Type: 文書・図像類
Title: Microwave spectroscopic study of the SiF3 radical: Spin-rotation interaction and molecular structure
Author/Editor: TANIMOTO, Mitsutoshi
SAITO, Shuji
Author Heading: TANIMOTO, Mitsutoshi
SAITO, Shuji
Publication, Distribution, etc.: American Institute of Physics
Publication Date: 1999-11
Publication Date (W3CDTF): 1999-11
Periodical title: Journal of Chemical Physics
No. or year of volume/issue: 111 20
Volume: 111
Issue: 20
Pages: 9242-9247
Text Language Code: eng
Target Audience: 一般
Note (General): The trifluorosilyl radical has been produced by glow discharge in hexafluorodisilane in a free space cell. The rotational spectrum of the radical has been measured from the 330 (N=22-21) GHz region down to the 90 (N=6-5) and 75 (N=5-4) GHz regions. In the lower N transitions the K=1 hyperfine components showed a distinct splitting. From the splitting of the K=1 lines it was concluded that the spin-rotation interaction constant of trifluorosilyl radical has a positive sign, which is different from that of trifluoromethyl. This difference is discussed in terms of the electronic states. The simplified discussion based on the Mulliken-Walsh diagram of the energy level is used to rationalize the difference in the sign of the interaction constants in the two radicals. The Si-F bond length is determined from the rotational constant B0 to be 1.565 Å when the bond angle F-Si-F is assumed to be 109.9° deduced in the matrix infrared spectroscopy. The spin density on the fluorine atoms is derived from the hyperfine coupling constants. The obtained molecular structure is compared with those of related molecules.
Access Restrictions: 限定公開
Rights (production): 〓 1999 American Institute of Physics
Related Material (DOI): 10.1063/1.479838
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ