Syntheses, Solution Multi-NMR Characterization, and Reactivities of [C<sub>6</sub>F<sub>5</sub>Xe]<sup>+</sup> Salts of Weakly Coordinating Borate Anions, [BY<sub>4</sub>]<sup>-</sup> (Y = CF<sub>3</sub>, C<sub>6</sub>F<sub>5</sub>, CN, or OTeF<sub>5</sub>)
作者:Karsten Koppe、Vural Bilir、Hermann-J. Frohn、Hélène P. A. Mercier、Gary J. Schrobilgen
DOI:10.1021/ic7010138
日期:2007.10.1
New examples of [C6F5Xe]+ salts of the weaklycoordinatinganions [B(CF3)4]-, [B(C6F5)4]-, [B(CN)4]-, and [B(OTeF5)4]- have been synthesized by metathesis reactions of [C6F5Xe][BF4] with the corresponding MI[BY4] salts (MI = K or Cs; Y = CF3, C6F5, CN, or OTeF5). The salts were characterized in solution by multi-NMR spectroscopy. Their stabilities in prototypic solvents (CH3CN and CH2Cl2) and decomposition
From hypervalent xenon difluoride and aryliodine(III) difluorides to onium salts: Scope and limitation of acidic fluoroorganic reagents in the synthesis of fluoroorgano xenon(II) and iodine(III) onium salts
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 oniumsalts 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
Preparation and Reactivity of Compounds Containing a Carbon−Xenon Bond
作者:Hermann-Josef Frohn、Vadim V. Bardin
DOI:10.1021/om010490j
日期:2001.11.1
carbon−xenon compounds is one of the newest in the field of organoelement chemistry. The specific character of carbon−xenon chemistry can be ascribed to the fact that in all XeII and XeIV compounds hypervalent bondssymmetrical or asymmetricalwith a high partial positive charge on Xe are present. Different from the class of high-oxidation-state organometallic derivatives of d metals, C−Xe compounds have low