Unimolecular Rate Constant and Threshold Energy for the HF Elimination from Chemically Activated CF<sub>3</sub>CHFCF<sub>3</sub>
作者:Juliana R. Duncan、Michael S. Roach、Brooke Sibila Stiles、Bert E. Holmes
DOI:10.1021/jp100195e
日期:2010.7.8
of CF3CHF and CF3 radicals at room temperature generated chemicallyactivated CF3CHFCF3 molecules with 95 ± 3 kcal/mol of internal energy that decompose by loss of HF, initially attached to adjacent carbons, with an experimental unimolecular rate constant of (4.5 ± 1.1) × 102 s−1. Density functional theory was used to model the unimolecular rate constant for HF elimination, kHF, to determine a threshold
The fluorination of Butane over cobalt trifluoride
作者:James Burdon、Saleh T. Ezmirly、Thomas N. Huckerby
DOI:10.1016/s0022-1139(00)83070-5
日期:1988.8
The fluorination of butane overcobalttrifluoride has given a complex mixture of partially fluorinated compounds: 51 of these have been identified, comprising over 99% of the products. Most were polyfluorobutanes but 1-2% were polyfluoro-2-methylpropanes. The reaction has no synthetic utility. There was some selectivity in the fluorination: secondary C-H was converted into C-F more easily then primary