Ortho-para mixing interaction in the vinyl radical detected by millimeter-wave spectroscopy

Keiichi Tanaka, Masato Hayashi, Mitsuhiko Ohtsuki, Kensuke Harada, Takehiko Tanaka

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

Ortho-para mixing interaction due to the coupling of nuclear and electron spins was detected for the first time by millimeter-wave spectroscopy of the deuterated vinyl radical H2CCD. The ground state of H2CCD is split by the deuteron tunneling into two components 0+ and 0 - separated by ΔE0 =1186.794(16) MHz. Rotational levels in the 0+ and 0- states, one being an ortho level and the other a para level, are coupled by the interaction expressed by 〈0 ±|H′|0〉=(δa F/2)S ·(I1-I2), where I1 and I2 are spins of the two protons and S is the electron spin. The δaF constant has been determined to be 68.06(52) MHz. The para to ortho conversion rate constant is predicted to be 1.2×105 s-1 torr-1.

本文言語英語
論文番号111101
ジャーナルJournal of Chemical Physics
131
11
DOI
出版ステータス出版済み - 12 1 2009

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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