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2012-09-08T08:02:39Z

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	~~21 yr old Software Engineer Keven Cutlip from Minnitaki~~, ~~usually spends time~~ with ~~passions~~ like ~~listening to music~~, ~~Iron Force Hack~~ and ~~pc activities~~. ~~Remembers what a pleasant spot it was having paid checking out~~ the ~~Landscape~~ of ~~Grand Pré~~.<br><br>~~Here~~ is ~~my blog post~~ ... [~~http~~://~~tinyurl~~.~~com~~/~~ironforcehacks download iron force hack~~]		'''Organoxenon compounds''' in [[organic chemistry]] contain [[carbon]] to [[xenon]] chemical bonds. The first organoxenon compounds were divalent, such as (C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>Xe. The first tetravalent organoxenon compound, [C<sub>6</sub>F<sub>5</sub>XeF<sub>2</sub>][BF<sub>4</sub>], was synthesized in 2004.<ref name = XeIV>{{cite journal\|coauthors=LeBlond, Nicolas, Lutar, Karel, Žemva, Boris\|title=The First Organoxenon(IV) Compound: Pentafluorophenyldifluoroxenonium(IV) Tetrafluoroborate\|journal=Angewandte Chemie International Edition\|date=2000-01-16\|volume=39\|issue=2\|pages=391–393\|doi=10.1002/(SICI)1521-3773(20000117)39:2<391::AID-ANIE391>3.0.CO;2-U}}</ref> So far, more than one hundred organoxenon compounds have been researched.

			Most of the organoxenon compounds are more unstable than [[xenon fluoride]]s due to the high [[Chemical polarity\|polarity]]. The molecular dipoles of xenon difluoride and [[xenon tetrafluoride]] are both 0 [[Debye\|D]]. The early synthesized ones only contain perfluoro groups, but later some other groups were found, e.g. 2,4,6-trifluorophenyl.<ref name=XeII>{{cite journal\|title=C6F5XeF, a versatile starting material in xenon-carbon chemistry\|journal=Journal of Fluorine Chemistry\|date=2004-05-31\|volume=125\|issue=6\|pages=981–988\|doi=10.1016/j.jfluchem.2004.01.019\|last=FROHN\|first=H}}</ref>

			== Xe(II) ==
			The most common bivalent organoxenon compound is C<sub>6</sub>F<sub>5</sub>XeF, which is always used as a precursor to other organoxenon compounds. Due to the unstability of xenon fluoride, it is impossible to synthesize organoxenon compound by using general [[organic reagent]]s. Most frequently used [[fluorinating agent]]s include Cd(Ar<sub>F</sub>)<sub>2</sub>(subscript "F" means fluorine-including [[aryl]]), C<sub>6</sub>F<sub>5</sub>SiF<sub>3</sub>, and C<sub>6</sub>F<sub>5</sub>SiMe<sub>3</sub> (should be used along with fluoride).

			With the use of stronger [[Lewis acid]]s, such as C<sub>6</sub>F<sub>5</sub>BF<sub>2</sub>, [[ionic compound]]s like [RXe][Ar<sub>F</sub>BF<sub>3</sub>] can be produced. [[Alkenyl]] and [[alkyl]] organoxenon compounds are prepared in this way as well, for example, C<sub>6</sub>F<sub>5</sub>XeCF=CF<sub>2</sub> and C<sub>6</sub>F<sub>5</sub>XeCF<sub>3</sub>.<ref name=XeII />

			Some typical reactions are listed below:
			:<math>\rm \ 2C_6F_5XeF + Cd(C_6F_5)_2 \rightarrow Xe(C_6F_5)_2 + CdF_2\downarrow </math>
			:<math>\rm \ C_6F_5XeF + Me_3SiCN \rightarrow C_6F_5XeCN + Me_3SiF</math>
			:<math>\rm \ C_6F_5XeF + Cd(2,4,6-C_6H_2F_3)_2 \rightarrow 2,4,6-C_6H_2F_3XeC_6F_5 + CdF_2\downarrow </math>
			The third reaction also produces (C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>Xe, Xe(2,4,6-C<sub>6</sub>H<sub>2</sub>F<sub>3</sub>)<sub>2</sub> and so on.

			The precursor C<sub>6</sub>F<sub>5</sub>XeF can be prepared by the reaction of [[trimethyl(pentaflurophenyl)silane]](C<sub>6</sub>F<sub>5</sub>SiMe<sub>3</sub>) and [[xenon difluoride]]. Adding fluoride to the adduct of C<sub>6</sub>F<sub>5</sub>XeF and [[arsenic pentafluoride]] is another method.<ref name=XeII />

			==Xe(IV)==
			In 2000, Karel Lutar and Boris Žemva ''et al.'' produced an ionic compound. They treated [[xenon tetrafluoride]] and [[difluoro(pentaflurophenyl)borane]] in dichloromethane at -55°C:

			:<math>\rm \ XeF_4 + C_6F_5BF_2 \xrightarrow[-55^oC]{CH_2Cl_2} [C_6F_5XeF_2]^+BF_4^-</math>

			The compound is an extremely strong [[fluorinating agent]], and it is capable of converting (C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>P to (C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>PF<sub>2</sub>, C<sub>6</sub>F<sub>5</sub>I to C<sub>6</sub>F<sub>5</sub>IF<sub>2</sub>, even iodine to [[iodine pentafluoride]].<ref name = XeIV />

			== See also ==
			* Compounds of carbon with other elements in the periodic table:
			{{ChemicalBondsToCarbon}}

			== References ==
			{{reflist}}

			{{Xenon compounds}}
			{{Noble gas compounds}}

			[[Category:Xenon compounds]]

Salix alba: see also Flow visualization - CS portal

2012-09-02T14:01:54Z

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en>Phil Boswell: convert dodgy URL to ID using AWB

Salix alba: rm afd notice, close keep

Salix alba: see also Flow visualization - CS portal