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Published on: August 18, 2017
Capturing transient structures in the elimination reaction of haloalkane in solution by transient X-ray diffraction
Jae Hyuk Lee1, Tae Kyu Kim, Joonghan Kim
1Center for Time-Resolved Diffraction, Department of Chemistry, KAIST, Daejeon 305-701, Korea.
Abstract:
This Communication reports simultaneous tracking of structural and kinetic information for the photoinduced elimination reaction of 1,2-diiodotetrafluoroethane in solution by transient X-ray diffraction. The transient structure of .CF2CF2I is determined to be a classical mixture whereas .CH2CH2I is bridged. Compared with the gas phase reaction, the secondary dissociation of .CF2CF2I into C2F4 and I is slowed down by a factor of 6 in solution. Transient X-ray diffraction offers a complementary method for capturing transient structures in solution which might be invisible or "optically silent" in time-resolved optical spectroscopy.
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