Distinct reactivities of cis- and trans-RFCF=CFBF2 towards XeF2 and the first synthesis of a [trans-RFCF=CFXe]+ salt

University of Duisburg-Essen, Essen, North Rhine-Westphalia, Germany
Mendeleev Communications (Impact Factor: 1.34). 05/2007; 17(3):137–138. DOI: 10.1016/j.mencom.2007.05.001


The competitive reaction of C4F9CF=CFBF2 (Cis: trans = 1.2: 1) with XeF2 demonstrated for the first time a remarkably lower reaction rate of the trans isomer with respect to the cis isomer in the xenodeborylation reaction (formation of the [C4F9CF=CFXe](+) cation with a cis: trans ratio of 2.5 to 4:1) and allowed us to develop reaction conditions for the syntheses of [trans-C4F9CF=CFXe](+) salts.

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