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Citation: Chen Wen-Wu, Sheng Liu-Si, Ding Chuan-Fan, Qi Fei, Zhang Yun-Wu, Kong Fan-Ao. The Measurement of Adiabatic Lonization Potential of Si(CH₃)₃Cl and Chemical Bond Energies of Si(CH₃)₃Cl⁺[J]. Acta Physico-Chimica Sinica, ;1996, 12(06): 560-563. doi: 10.3866/PKU.WHXB19960617 shu

The Measurement of Adiabatic Lonization Potential of Si(CH₃)₃Cl and Chemical Bond Energies of Si(CH₃)₃Cl⁺

1.
The State Key Laboratory of Molecular Reaction Dynamics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080

Received Date: 4 October 1995
Available Online: 15 June 1996

The photoionization spectroscopy of Si(CH3)3Cl in the range of 50 -130 nm was studied with synchrotron radiation source. The adiabatic ionization potentials of molecule Si(CH3)3Cl and radical Si(CH3)3 are 10.06 ±0.02 eV and 7.00±0.03 eV respectively. In addition, the appearance potentials of Si(CH3)2Cl+, Si(CH3)3+, SiCl+ and SiCH3+ were determined:
AP(Si(CH3)2Cl+) ＝10.49±0.02eV, AP(Si(CH3)3+) ＝ 11.91 ±0.02eV
AP(SiCl+) ＝ 18.64 ±0.06eV, AP(SiCH3+)＝ 18.62 ±0.02eV
From these, some chemical bond energies of Si(CH3)3Cl+ were calculated:
D(Si(CH3)2Cl+ - CH3) ＝0.43 ±0.02eV, D(Si(CH3)3+ - Cl) ＝ 1.85 ± 0.02eV
D(SiCH3+ - (2CH3 ＋ Cl)) ＝ 8.56 ± 0．06eV, D(SiCH3+ - 2CH3) ＝6.71±0．06eV
D(SiCl+ - 3CH3) ＝ 8.58 ± 0.06eV, D(SiCl＋- 2CH3) ＝ 8.15 ±0.06eV
D(SiCH3+- (CH3 ＋ Cl)) ＝8.13 ±0.06eV
- Si(CH3)3Cl,
- Synchrotron radiation,
- Ultraviolent photoionization,
- Lonization potential,
- The dissociated energy of chemical bond
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The Measurement of Adiabatic Lonization Potential of Si(CH₃)₃Cl and Chemical Bond Energies of Si(CH₃)₃Cl⁺