- C6F5XeY Molecules (Y = F and Cl): New synthetic approaches. first structural proof of the organoxenon halide molecule C 6F5XeF
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The arylxenonium salt [C6F5Xe][BF4] reacts with different sources of nucleophiles, Y (naked fluoride, [N(CH 3)4]F, the silanes, (CH3)3SiCl and (C2H5)3SiH, and the cadmiumorganyl, Cd(C 6F5)2), in coordinating solvents (C 2H5CN, CH3CN, CD3CN). While the products C6F5XeF, C6F5XeCl, and (C6F5)2Xe are well defined molecules, in reactions with (C2H5)3SiH only decomposition products presumably derived from 6F5XeH6F5XeC2H56F5XeF are discussed.
- Bilir, Vural,Frohn, Hermann-Josef
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p. 505 - 512
(2013/09/23)
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- Preparation and reactivity of compounds containing a carbon-xenon bond
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The chemistry of carbon-xenon compounds is one of the newest in the field of organo-element chemistry. The specific character of carbon-xenon chemistry can be ascribed to the fact that in all XeII and XeIV compounds hypervalent bonds-symmetrical or asymmetrical-with with 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 coordination numbers and, additionally, contain three or two lone electron pairs. It is the intent of this review to present the still limited number of synthetic approaches to C-Xe compounds and to organize their presently known reactivities into categories. It is hoped that C-Xe compounds can be introduced in the future as precursors in synthetic organic and organoelement chemistry.
- Frohn, Hermann-Josef,Bardin, Vadim V.
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p. 4750 - 4762
(2008/10/08)
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- C6F5XeF, a key substrate in xenon-carbon chemistry: Synthesis of symmetric and asymmetric pentafluorophenylxenon(II) derivatives
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The "naked" fluoride [NMe4]F in CH2Cl2 converts the salt-like compound [C6F5Xe][AsF6] into the asymmetric, hypervalent molecule 1 in 70%, yield. As a result of its high fluoride-donating ability and its permanent dipole moment, 1 reacts in good yields with Cd(C6F5)2 to form Xe(C6F5)2 (2) and with Me3SiCN to form C6F5XeCN (3).
- Frohn, Hermann-Josef,Thei, Michael
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p. 4591 - 4593
(2007/10/03)
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- Bis(pentafluorophenyl)xenon, Xe(C6F5)2: A homoleptic diorganoxenon derivative
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A step forward in organo xenon chemistry: The fluoride-initiated reaction of Me3SiC6F5 and XeF2 leads, via the intermediate C6F5XeF, to an isolable [10-Xe-2] species with two xenon-carbon bonds (see scheme).
- Maggiarosa, Nicola,Naumann, Dieter,Tyrra, Wieland
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p. 4588 - 4591
(2007/10/03)
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