RfBF2 are in general suitable reagents to transform XeF2 and RIF2 into the corresponding onium tetrafluoroborate salts [RfXe][BF4] and [R(Rf)I][BF4], respectively. (4-C5F4N)BF2 and trans-CF3CFCFBF2 which represent boranes of high acidity form no Xe–C onium salts in reactions with XeF2 but give the desired iodonium salts with RIF2 (R = C6F5, o-, m-, p-C6FH4). The reaction of (4-C5F4N)BF2 with XeF2 ends with
通常,
氟化有机二
氟硼烷R f BF 2是将XeF 2和RIF 2分别转化为相应的四
氟硼酸盐[R f Xe] [BF 4 ]和[R(R f)I] [BF 4 ]的试剂。(4-C 5 F 4 N)BF 2和反式-CF 3 CFCFBF 2代表高酸性
硼烷,在与XeF 2反应时不形成Xe-C鎓盐,但与RIF 2形成所需的
碘鎓盐(R = C 6 ˚F 5,o-,m-,p -C 6 FH 4)。(4-C 5 F 4 N)BF 2与XeF 2的反应以XeF 2-
硼烷加合物终止。当C 6 F 5 XeF与Cd(4-C 5 F 4 N )反应时,获得第一个Xe-(4-C 5 F 4 N)化合物C 6 F 5 Xe(4-C 5 F 4 N)。)2。我们描述了(4-C 5 F 4 N)IF 2的合成和(4-C 5 F 4 N)IF 2和C 6 F 5 IF 2与(4-C 5 F 4 N)BF 2的反应。类似于[(4-C