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Equilibrium Structure for CClF3 Using Real-Time and Time-Resolved Gas Electron Diffraction

시간 분해능 전자회절 분광법을 이용한 CClF3분자의 평형 구조 연구

  • Seo, Seong S. ;
  • Ewbank, John D.
  • Published : 2004.08.20

Abstract

The simplified cumulant method was applied to diffraction data of $CClF_3$ to study the equilibrium molecular parameters over a range of temperatures. The molecular parameters of $CClF_3$ by the simplified cumulant method were compared with those from the traditional method. Also the instrumentation of picosecond time resolved electron diffraction (TRED) and the experimental details are described. The total experimental temporal resolution was discussed in terms of the electron pulse width. The TRED system was applied to study the molecular structures for $CClF_3$ at room temperature. The molecular structural parameters $CClF_3$ from TRED are compared with those from GED/RT. The molecular parameters ($r_e$)of bonded C-F and C-Cl for $CClF_3$ by simplified CA are 132.00(2) pm and 175.20(3) pm, respectively, by using GED/RT. From the results of TRED experiments $r_a$ for bonded C-F and C-Cl are 132.23(13) pm and 177.23(19) pm.

Keywords

Molecular Structure;Time-Resolved Electron Diffraction;Gas Electron Diffraction

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