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http://dx.doi.org/10.5012/jkcs.2004.48.4.339

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

Seo, Seong S. (Department of Natural Science, Albany State University)
Ewbank, John D. (Department of Chemistry and Biochemistry, University of Arkansas)
Publication Information
Journal of the Korean Chemical Society / v.48, no.4, 2004 , pp. 339-350 More about this Journal
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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