Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (04): 447-449.doi: 10.3866/PKU.WHXB19930404

• Communication • Previous Articles     Next Articles

Vibrational Excitation of OH(v≤3) from the reaction of O(1D)+Si(CH3)3Cl

Li Hong-Zhi; Wang Xue-Bin; Kong Fan-Ao; Zhu Qi-He   

  1. Institute of Chemistry, CAS, The State Key Laboratory of Malecular Reaction Dynamics, Beijing 100080
  • Received:1993-03-29 Revised:1993-04-05 Published:1993-08-15
  • Contact: Zhu Qi-He

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Abstract: The vibrationally excited OH(v) from the reaction of O(~1D)+Si(CH_3)_3Cl was observed by UV laser photolysis/FTIR emission spectroscopy. The vibrational number was only up to 3 with a ratio of 1:0.8:0.1 for v=1:2:3. Comparing this result with the similar reaction of O(~1D)+Si(CH_3)_4 which OH(v) vibrational number was high up to 4 with a ratio of 1:1:1:0.3 for v=1:2:3:4 under the same experimental conditions, it was found that the substitution of Cl for CH_3 affected the extent of heavy Si atom blocking the energy migration in a molecule. This results identifies the prediction that the characteristic of electrons in central atom plays an important role in intramolecular energy transfer.

Key words: Intramolecular energy transfer, IR emission spectroscopy, Heavy atom effect, Chlorotrimethylsilane